Legality Changes by Yellow and Japanese Blue [QC 1/1] [GP 2/2] [HTML-ready!]

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Plague von Karma

Banned deucer.
Approved by shiny finder
Art by
EyeDonutz

TaurosBlizzard.png

Introduction
Every Pokemon generation introduces changes to legality halfway through, be it through events, updates to software, third versions, or something else. The first generation is no exception to this, featuring many minor changes across its second wave of releases. While Pokemon Red and Green were the first games released in Japan, Blue was later released through a CoroCoro magazine mail order promotion in 1997. It later got re-released for retail alongside Pokemon Yellow, arguably making them sequel titles.

This guide will go over changes that made a significant difference to the Pokemon themselves, such as access to better DVs or movepool changes.

Japanese Blue Version
The Japanese version of Pokemon Blue is actually quite different to the Pokemon Blue that we got in the West; the version we got had legality based on Pokemon Green while still using a translated script from Japanese Blue, plus the updated sprites. This is why the "Raichu evolved" error got left in Cinnabar Lab, which led to various playground myths back in the '90s that turned out to be partly right with the revelation of Gorochu's removal during the original game's development. It's also the reason MissingNo. gets a glitched Pokedex entry in the international versions of Red and Blue, as it wasn't translated and thus calls invalid characters. Overall, our Blue version was effectively a mishmash of Green and Japanese Blue.

So what was in this Japanese Blue version, then? Let's go over that first.

Japanese Blue introduced the usual changes you would expect from a Pokemon version of this era: different wild encounter tables, Game Corner prizes, Celadon Mart items, and in-game trades. Because of this, though, the game introduces some otherwise unobtainable Pokemon and thus legality that is Japan-exclusive.

In-Game Trades
The main change Japanese Blue brings is its in-game trades, which are eligible for perfect DVs by virtue of not being tied to encounter rates. Because Tauros is a regular encounter in the other games, Japanese Blue is the only game capable of providing a perfect one. It also uniquely provides Pokemon evolving by trade, like Graveler and Haunter.

LocationPokemon to TradePokemon received ReceivedNickname (Japanese)
Route 2JigglypuffMr. Mimeまさる (Masaru)
Underground Path (Route 5)RattataPoliwagロモたん (Romo-tan)
Route 11RhydonKangaskhanロダン (Rodan)
Route 18PersianTaurosぎゅうた (Gyuuta)
Cerulean CityMachokeHaunter ~ Gengar*ゴーすけ (Goosuke)
Vermillion CityPidgeyFarfetch'dアッカ (Akka)
Cinnabar LabKadabraGraveler ~ Golem*さぶろう (Saborou Saburou)
Cinnabar LabSeelSlowpokeオスカル (Osukaru)
Cinnabar LabGrowlitheKrabbyどうらく (Douraku)
Unused Trade**ButterfreeBeedrillチクチク (Chikuchiku)
*The evolution of these Pokemon cannot be cancelled. Both Pokedex entries are filled.
**This trade can be obtained through glitches, though it is obviously illegitimate.


golem.png
kangaskhan.png
muk.png
These trades also have an effect on the minimum levels you can obtain some Pokemon at. This makes three Pokemon eligible for the official Pika Cup format through some fairly complex in-game trading. In fact, because of another localization error in Pokemon Stadium, each of these Pokemon can be seen in Round 2 despite being unobtainable internationally, which can be fairly confusing for those unaware. Golem and Kangaskhan are notably quite powerful in the format, changing the metagame a good bit.
  • An eligible Golem can be obtained through trading a level 16 Kadabra at Cinnabar Lab.
    • This means its minimum level is 16, which makes the Golem in Stadium's Round 2 completely illegal!
  • An eligible Kangaskhan can be obtained by using Surf on Route 6 to catch a level 15 Golduck (5% encounter) and trading it with Yellow. Once in Yellow, trade for the Rhydon at Cinnabar Lab. After that, trade this Rhydon back to Japanese Blue and trade for the Kangaskhan at Route 11. This nets you a level 15 Kangaskhan.
  • An eligible Muk can be obtained by doing the Kangaskhan method above and subsequently trading it for the Muk in Pokemon Yellow's Cinnabar Lab.

Wild Encounters
As is tradition with each version, various wild encounters were changed, including some changes that are quite interesting. Because Lickitung and Jynx are no longer obtainable via trades in Japanese Blue, they're instead distributed to the Safari Zone and Seafoam Islands, respectively.
PokemonLocationLevel RangeEncounter Percentage
DittoRock Tunnel B1FLevel 1810%
LickitungSafari Zone EastLevel 254%
LickitungSafari Zone WestLevel 281%
JynxSeafoam Islands B2FLevel 371%
JynxSeafoam Islands B4FLevel 394%
RapidashCerulean Cave 1FLevel 4910%
RaticateCerulean Cave B1FLevel 5210%
ClefairyCerulean Cave B2FLevel 6410%

lickitung.png
jynx.png
Because of these changes, Japanese Blue makes it possible to nickname Jynx without resetting for the same Trainer ID, which has an astronomically low chance of succeeding. Japanese Blue was also the first time this applied to Lickitung before it was later put in Yellow's Cerulean Cave. Because both Lickitung and Jynx are wild encounters, however, it is impossible for them to get perfect DVs, and they're restricted to spreads that either reduce their Speed or reduce their Special. It's also impossible for a wild Lickitung to learn Wrap due to being obtained at quite a high level, causing it to learn Defense Curl over it.

Yellow Version
Pokemon Yellow brought far more significant changes overall, adding entirely new moves to Pokemon's learnsets alongside the usual changes each version of RBY experiences. Its encounter tables also naturally brought forth entire new changes to DV legality, though listing everything is nigh-impossible.

This table goes over the moves added to each Pokemon's learnset:

HTML:
<table class="tg">
<thead>
  <tr>
    <th class="tg-9353">Pokemon</th>
    <th class="tg-iiav">Added Move(s)</th>
    <th class="tg-9353">Method</th>
  </tr>
</thead>
<tbody>
  <tr>
    <td class="tg-7btt">Charizard</td>
    <td class="tg-9wq8">Fly</td>
    <td class="tg-0pky">HM02</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Butterfree</td>
    <td class="tg-9wq8">Gust</td>
    <td class="tg-0pky">L28</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Flash</td>
    <td class="tg-0pky">HM05</td>
  </tr>
  <tr>
    <td class="tg-7btt">Fearow</td>
    <td class="tg-9wq8">Pay Day</td>
    <td class="tg-0pky">Pokemon Stamp Event (August 1998)</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="5">Pikachu</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-0pky">L6</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Slam</td>
    <td class="tg-0pky">L20</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Light Screen</td>
    <td class="tg-0pky">L50</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Fly</td>
    <td class="tg-0pky">CoroCoro [COLOR=rgb(222, 23, 131)][B]magazine [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]Magazine[/B][/COLOR] Event (c.1997)</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Surf</td>
    <td class="tg-0pky">CoroCoro [COLOR=rgb(222, 23, 131)][B]magazine [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]Magazine[/B][/COLOR] Event (c.1997), Pokemon Stadium Move Tutor</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="5">Raichu</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-lboi" rowspan="5">Evolve Pikachu</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Slam</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Light Screen</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Fly</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Surf</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="3">Venonat</td>
    <td class="tg-9wq8">Supersonic</td>
    <td class="tg-0pky">L11</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Confusion</td>
    <td class="tg-0pky">L19</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Flash</td>
    <td class="tg-0pky">HM05</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="3">Venomoth</td>
    <td class="tg-9wq8">Supersonic</td>
    <td class="tg-0pky">L1, Evolve Venonat<br></td>
  </tr>
  <tr>
    <td class="tg-9wq8">Confusion</td>
    <td class="tg-0pky">L1, Evolve Venonat</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Flash</td>
    <td class="tg-0pky">HM05</td>
  </tr>
  <tr>
    <td class="tg-7btt">Diglett</td>
    <td class="tg-9wq8">Cut</td>
    <td class="tg-0pky">HM01</td>
  </tr>
  <tr>
    <td class="tg-7btt">Dugtrio</td>
    <td class="tg-9wq8">Cut</td>
    <td class="tg-0pky">HM01</td>
  </tr>
  <tr>
    <td class="tg-7btt">Psyduck</td>
    <td class="tg-9wq8">Amnesia</td>
    <td class="tg-0pky">Pokemon Stadium</td>
  </tr>
  <tr>
    <td class="tg-7btt">Golduck</td>
    <td class="tg-9wq8">Amnesia</td>
    <td class="tg-0pky">Evolve an Amnesia Psyduck</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Mankey</td>
    <td class="tg-9wq8">Low Kick</td>
    <td class="tg-0pky">L9</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Screech</td>
    <td class="tg-0pky">L45</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Primeape</td>
    <td class="tg-9wq8">Low Kick</td>
    <td class="tg-0pky">L1, L9, Evolve Mankey</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Screech</td>
    <td class="tg-0pky">L45</td>
  </tr>
  <tr>
    <td class="tg-7btt">Kadabra</td>
    <td class="tg-9wq8">Kinesis</td>
    <td class="tg-0pky">L1</td>
  </tr>
  <tr>
    <td class="tg-7btt">Alakazam</td>
    <td class="tg-9wq8">Kinesis</td>
    <td class="tg-0pky">L1, Evolve Kadabra</td>
  </tr>
  <tr>
    <td class="tg-7btt">Rapidash</td>
    <td class="tg-9wq8">Pay Day</td>
    <td class="tg-0pky">Pokemon Stamp Event (August 1998)</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Cubone</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-0pky">L13</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Headbutt</td>
    <td class="tg-0pky">L18</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Marowak</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-0pky">L1, L13</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Headbutt</td>
    <td class="tg-0pky">L18</td>
  </tr>
  <tr>
    <td class="tg-7btt">Chansey</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-0pky">L1</td>
  </tr>
  <tr>
    <td class="tg-7btt">Tangela</td>
    <td class="tg-9wq8">Vine Whip</td>
    <td class="tg-0pky">L29</td>
  </tr>
  <tr>
    <td class="tg-7btt">Scyther</td>
    <td class="tg-9wq8">Wing Attack</td>
    <td class="tg-0pky">L50</td>
  </tr>
  <tr>
    <td class="tg-7btt">Pinsir</td>
    <td class="tg-9wq8">Bind</td>
    <td class="tg-0pky">L21</td>
  </tr>
  <tr>
    <td class="tg-7btt">Magikarp</td>
    <td class="tg-9wq8">Dragon Rage</td>
    <td class="tg-0pky">Tamamushi University Event (July 1998)</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Eevee</td>
    <td class="tg-9wq8">Growl</td>
    <td class="tg-0pky">L16</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Focus Energy</td>
    <td class="tg-0pky">L36</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="3">Vaporeon</td>
    <td class="tg-9wq8">Growl</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Focus Energy</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Aurora Beam</td>
    <td class="tg-0pky">L36</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Jolteon</td>
    <td class="tg-9wq8">Growl</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Focus Energy</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="3">Flareon</td>
    <td class="tg-9wq8">Growl</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Focus Energy</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Smog</td>
    <td class="tg-0pky">L42</td>
  </tr>
</tbody>
</table>
The most notable change Yellow brought to the game was actually having a Pokemon that learns Kinesis. Prior to Yellow's release, Kadabra couldn't learn Kinesis, causing the move to become unused outside of glitches or Metronome. Once Yellow was released, Kadabra became able to use Kinesis at L1, meaning that wild Kadabra come with the move. However, this also means that Kinesis Kadabra from Yellow cannot have perfect DVs; to get perfect DVs, it must be obtained as a Game Corner prize as an Abra.

Pinsir was blessed with the move Bind, allowing it to be less of a momentum sink. Bind can act as a pseudo-U-turn in RBY, preventing Pokemon from moving as the user switches. It also allows Pinsir to chip Pokemon into Swords Dance + Hyper Beam range, which makes it a terror against paralyzed teams. Without this move, Pinsir is often forced out by Gengar and Haunter while letting them get off Hypnosis, as it only learns Normal- and Fighting-type moves and only has Seismic Toss to actually damage them. With Bind, it's possible to pivot out into an outright counter.

While only relevant in Stadium, Jolteon got bestowed with Focus Energy, a move that quarters the user's critical hit rate in RBY. In Stadium, however, it raises it by about 66%, giving Jolteon a savage critical hit rate of 71%. This makes it into a deadly sweeper in formats using Stadium mechanics, such as Stadium OU or Poke Cup. However, it also comes at the opportunity cost of moves like Rest or Pin Missile, as the combination of Thunder Wave + Thunderbolt + Double Kick is almost undroppable.

Charizard also learns Fly, which not only gives it a Flying-type STAB move, but also a decent way to exploit the semi-invulnerability glitch; if it experiences paralysis or confusion while flying, it'll get stuck in the air until it uses Fly again. Because it learns Swords Dance, an invulnerable Charizard is very capable of gimmicking its way to victory in niche formats that allow the semi-invulnerability moves, such as the in-game Yellow's version of Poke Cup.

While an insignificant change in the grand scheme of things, Yellow version was the first time Scyther actually got a STAB move: prior to this, Scyther only learned Normal-type attacks. Ergo, it was literally incapable of winning against Gengar, as Struggle is Normal-type in RBY. While Wing Attack does little to prevent such a humiliating defeat, it at least allows Scyther to deal damage to it.

However, as the following table implies, Pokemon Yellow doesn't just add moves to a Pokemon's movepool, it also shifts the levels around accordingly. This is mainly to balance in-game playthroughs more effectively. Because of this, there is some minor significance when applying version differences to level-limited formats, such as the Stadium Cups. In fact, it's arguably optimal to use Pokemon Yellow if you aim to play through these without glitches.

HTML:
<table class="tg" style="margin-left:auto; margin-right:auto";>
<thead>
  <tr>
    <th class="tg-t2cw">Pokemon</th>
    <th class="tg-t2cw">Move(s)</th>
    <th class="tg-t2cw">Pokemon Red</th>
    <th class="tg-t2cw">Pokemon Yellow</th>
    <th class="tg-t2cw">Notes and Remarks</th>
  </tr>
</thead>
<tbody>
  <tr>
    <td class="tg-wa1i" rowspan="7">Butterfree</td>
    <td class="tg-baqh">Confusion</td>
    <td class="tg-nrix">L12<br></td>
    <td class="tg-nrix">L10</td>
    <td class="tg-cly1"></td>
  </tr>
  <tr>
    <td class="tg-baqh">PoisonPowder</td>
    <td class="tg-nrix">L15</td>
    <td class="tg-nrix">L13</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-baqh">Stun Spore</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-baqh">Sleep Powder</td>
    <td class="tg-nrix">L17</td>
    <td class="tg-nrix">L15</td>
    <td class="tg-0lax">Yellow is the only way to get an L15 Butterfree with Sleep Powder for Pika Cup.</td>
  </tr>
  <tr>
    <td class="tg-baqh">Supersonic</td>
    <td class="tg-nrix">L21</td>
    <td class="tg-nrix">L18</td>
    <td class="tg-0lax">Yellow legalized Supersonic Butterfree for Pika Cup.</td>
  </tr>
  <tr>
    <td class="tg-baqh">Whirlwind</td>
    <td class="tg-nrix">L26</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-baqh">Psybeam</td>
    <td class="tg-nrix">L32</td>
    <td class="tg-nrix">L34</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Pikachu</td>
    <td class="tg-nrix">Thunder Wave</td>
    <td class="tg-nrix">L9</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-nrix">L11</td>
    <td class="tg-0lax">Yellow is the only way to get an L15 Pikachu or Raichu with Quick Attack for Pika Cup.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Thunderbolt</td>
    <td class="tg-nrix">Not learned</td>
    <td class="tg-nrix">L26</td>
    <td class="tg-0lax">Pikachu is the only Pokemon in Generation I to learn Thunderbolt via [COLOR=rgb(222, 23, 131)][B]Level Up. [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]level-up.[/B][/COLOR]</td>
  </tr>
  <tr>
    <td class="tg-nrix">Thunder</td>
    <td class="tg-nrix">L43</td>
    <td class="tg-nrix">L41</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Swift</td>
    <td class="tg-nrix">L26</td>
    <td class="tg-nrix">Removed</td>
    <td class="tg-0lax">Pikachu has to learn Swift via TM in Yellow instead.</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Nidoran-F</td>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">L17</td>
    <td class="tg-0lax">[COLOR=rgb(222, 23, 131)][B]Tradebacking [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]Trading[/B][/COLOR] a Nidoran-F [COLOR=rgb(44, 130, 201)][B]back [/B][/COLOR]from Yellow can get Double Kick and Poison Sting onto a L15 Nidoran-F. This can be used to get an L16 Double Kick + Poison Sting Nidoqueen.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L21</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L29</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">You can technically use RGB to save a level to use Bite in Petit Cup, but it's outclassed by better options.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Fury Swipes</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-nrix">L38</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L43</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax">Yellow legalized Double Kick Nidoran-F for Pika Cup.</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Nidorina</td>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">L19</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L32</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Fury Swipes</td>
    <td class="tg-nrix">L41</td>
    <td class="tg-nrix">L46</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L50</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Nidoqueen</td>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">From Nidoran-F or Nidorina</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-cly1" rowspan="2">Only relevant for Trainers.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Nidoran-M</td>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14<br></td>
    <td class="tg-nrix">L17</td>
    <td class="tg-0lax">[COLOR=rgb(222, 23, 131)][B]Tradebacking [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]Trading[/B][/COLOR] a Nidoran-M [COLOR=rgb(44, 130, 201)][B]back [/B][/COLOR]from Yellow can get Double Kick and Poison Sting onto an L15 Nidoran-M. This can be used to get an L16 Double Kick + Poison Sting Nidoking.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Focus Energy</td>
    <td class="tg-nrix">L21</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Fury Attack</td>
    <td class="tg-nrix">L29</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">RGB can be used to learn Fury Attack a level earlier. Considering Focus Energy, this can be a gimmick set in Stadium, but Body Slam is normally better for consistent damage.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Horn Drill</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-nrix">L38</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L43</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Nidorino</td>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">L19</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Focus Energy</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Fury Attack</td>
    <td class="tg-nrix">L32</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Horn Drill</td>
    <td class="tg-nrix">L41</td>
    <td class="tg-nrix">L46</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L50</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Nidoking</td>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">From Nidoran-M or Nidorino</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax" rowspan="2">Only relevant for Trainers overall.<br><br>Interestingly, in both versions, only Nidoking learns Thrash at L23. This creates learnset incompatibilities with Focus Energy and Fury Attack. It also creates an incompatibility with Double Kick in Yellow-banned formats.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-amwm">Venonat</td>
    <td class="tg-baqh">PoisonPowder</td>
    <td class="tg-baqh">L24 ~ L22</td>
    <td class="tg-0lax"></td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Venomoth</td>
    <td class="tg-nrix">Leech Life</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Poison Powder</td>
    <td class="tg-nrix">L1 or L24</td>
    <td class="tg-nrix">L22</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-amwm">Primeape</td>
    <td class="tg-baqh">Rage</td>
    <td class="tg-baqh">N/A ~ L28</td>
    <td class="tg-0lax"></td>
    <td class="tg-0lax">Primeape already got Rage via TM20, making this a largely irrelevant change.</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Kadabra</td>
    <td class="tg-nrix">Confusion</td>
    <td class="tg-nrix">L1 or L16</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-cly1" rowspan="2">Entries removed to make room for Kinesis.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Disable</td>
    <td class="tg-nrix">L1 or L20</td>
    <td class="tg-nrix">L20</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Alakazam</td>
    <td class="tg-nrix">Confusion</td>
    <td class="tg-nrix">L1 or L16</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Disable</td>
    <td class="tg-nrix">L1 or L20</td>
    <td class="tg-nrix">L20</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="3">Tangela</td>
    <td class="tg-nrix">Bind</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L24</td>
    <td class="tg-cly1" rowspan="3">Moves were shifted around to make room for Vine Whip.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Absorb</td>
    <td class="tg-nrix">L29</td>
    <td class="tg-nrix">L27</td>
  </tr>
  <tr>
    <td class="tg-nrix">Growth</td>
    <td class="tg-nrix">L49</td>
    <td class="tg-nrix">L48</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Gyarados</td>
    <td class="tg-nrix">Tackle</td>
    <td class="tg-nrix">From Magikarp</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-cly1" rowspan="5">Rebalanced for the fact [COLOR=rgb(44, 130, 201)][B]that [/B][/COLOR]it's now catchable. This could also be considered a Trainer nerf. However, the Pika Cup [COLOR=rgb(222, 23, 131)][B]Rental [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]rental[/B][/COLOR] Gyarados actually uses the removed attacks at L15, making it an illegal rental.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-nrix">Dragon Rage</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-nrix">Leer</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-nrix">Hydro Pump</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Eevee</td>
    <td class="tg-nrix">Sand-Attack</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax">Yellow can be used to get Quick Attack Eevee prior to L25 for Petit Cup, which is actually really important for its moveset.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L31</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-0lax">This legalizes Tail Whip for use in Petit Cup.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L37</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">This legalizes Bite Eevee for use in Petit Cup on L30 builds, but Body Slam is normally more effective.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Take Down</td>
    <td class="tg-nrix">L45</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="9">Vaporeon</td>
    <td class="tg-nrix">Sand-Attack</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Water Gun</td>
    <td class="tg-nrix">L31</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-0lax">Given Water Gun is a TM, this doesn't change anything, unlike Tail Whip and Bite.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L37</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-0lax">This legalizes Tail Whip Vaporeon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L40</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">This legalizes Bite Vaporeon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Acid Armor</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-nrix">L47</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Haze</td>
    <td class="tg-nrix">L44</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-0lax" rowspan="2">[COLOR=rgb(222, 23, 131)][B]Due to the fact [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]Because[/B][/COLOR] a Pokemon can only learn one move via level-up at a time, Haze is prioritized [COLOR=rgb(222, 23, 131)][B]instead.[/B][/COLOR][COLOR=rgb(44, 130, 201)][B] over Mist.[/B][/COLOR]<br><br>The only way to learn Mist in Yellow is by leveling up Vaporeon in the Pokemon Day Care near Cerulean City.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Mist</td>
    <td class="tg-nrix">L48</td>
    <td class="tg-nrix">L42</td>
  </tr>
  <tr>
    <td class="tg-nrix">Hydro Pump</td>
    <td class="tg-nrix">L54</td>
    <td class="tg-nrix">L52</td>
    <td class="tg-0lax">Hydro Pump can be used two levels early in Poke Cup.</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="9">Jolteon</td>
    <td class="tg-nrix">Sand-Attack</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Thundershock</td>
    <td class="tg-nrix">L31</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-0lax">This legalizes Thundershock Jolteon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L37</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-0lax">This legalizes Tail Whip Jolteon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Thunder Wave</td>
    <td class="tg-nrix">L40</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-nrix">L40</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Pin Missile</td>
    <td class="tg-nrix">L44</td>
    <td class="tg-nrix">L47</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Agility</td>
    <td class="tg-nrix">L48</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Thunder</td>
    <td class="tg-nrix">L54</td>
    <td class="tg-nrix">L52</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="9">Flareon</td>
    <td class="tg-nrix">Sand-Attack</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Ember</td>
    <td class="tg-nrix">L31</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-0lax">This legalizes Ember Flareon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L37</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-0lax">This legalizes Tail Whip Flareon for use [COLOR=rgb(222, 23, 131)][B]for use[/B][/COLOR] in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L40</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">This legalizes Bite Flareon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Leer</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-nrix">L47</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Fire Spin</td>
    <td class="tg-nrix">L44</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Flamethrower</td>
    <td class="tg-nrix">L52</td>
    <td class="tg-nrix">L54</td>
    <td class="tg-0lax">Flamethrower can be used two levels early in Poke Cup.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Rage</td>
    <td class="tg-nrix">Not learned</td>
    <td class="tg-nrix">L28</td>
    <td class="tg-0lax">Rage was already learned via TM20, so it doesn't really matter.</td>
  </tr>
</tbody>
</table>
The Nidoran lines famously got Double Kick at level 12 via Yellow version, which is partly what made the early-game bearable when facing down Brock. This also gives them some minor extra coverage in Pika Cup, although you're probably better off using stronger moves like Earthquake, Thunderbolt, and Blizzard. It's technically possible to use Pokemon Red to learn Poison Sting prior to the threshold of level 15, though it's a largely useless move.

Most Eeveelutions got some love here; Eevee gets access to Quick Attack prior to level 25, making it a bit more viable for a Petit Cup playthrough in Stadium considering its awful base movepool. Vaporeon and Flareon also got access to their strongest moves at level 52&mdash;Hydro Pump and Flamethrower, respectively&mdash;making them slightly easier to fit on balanced-level teams in Poke Cup.

Events
Stadium Gift Pokemon

The first Japanese Stadium title&mdash;often colloquially referred to as "Stadium Zero"&mdash;allows Pikachu to be taught Surf if one clears the level 30 cup based on Nintendo Cup '98. In the second Stadium title, which was released internationally, if one clears Prime Cup Master Ball Round 2 with a Pikachu in their party without saving, so long as it is picked in the final battle, Pikachu can also be taught Surf. This is the most accessible method of obtaining a Pikachu with Surf, which is crucial to its success competitively, as well as accessing the Pikachu's Beach minigame in Pokemon Yellow.

Additionally, if one gets all 151 Pokemon in the Hall of Fame in Pokemon Stadium, they can receive a level 15 Amnesia Psyduck, which single-handedly turns its evolution from a thoroughly mediocre Pokemon into a significant threat, giving it a much-needed identity as a special sweeper. In fact, Amnesia Golduck is so strong, it was banned from RBY NU in 2020!

Japan-exclusive Event Pokemon

In Japan, a select few Pokemon were distributed that had otherwise unobtainable moves. While generally unimpressive, these would pave the way for more famous event distributions, such as the notorious New York Pokemon Center events in GSC. Because the RBY events were only available in Japan, these Pokemon cannot be used in international games, as trading them across regions causes save data corruption. These events are considered to be among the rarest of all time, normally being distributed to a pool of 20 players each. Due to the nature of these events, they are also Japan-exclusive legality, akin to Japanese Blue's DVs.

Pikachu first got Surf via event on June 12th, 1997 via the "Pokemon 2 Idea Contest" in Shogakukan's CoroCoro magazine. For this event, readers submitted Pokemon ideas for the then-upcoming Pokemon Gold and Silver titles. Tsunekazu Ishihara and Satoshi Tajiri selected their top 20 contestants, who sent in their cartridges to receive the Pikachu. Therefore, this Pikachu is extremely rare. This distribution would be repeated twice as a kind of raffle in later issues, each with 20 winners. However, two similar distributions were also performed for a Fly Pikachu, which is unobtainable in the West. Both Pikachu were distributed at level 5, though a Surf Pikachu can theoretically be obtained at level 3 through Stadium's Move Tutor.

Shogakukan also distributed a special Dragon Rage Magikarp at level 15 via the "Tamamushi University Hyper-Test" event in July 1998, wherein players submitted a series of answers to six tests in the CoroCoro magazine issues. The top 1,000 "students" of these Pokemon exams were entered into a raffle to be among 20 "professors" to obtain the legendary Magikarp. The rest (jncluding the raffle winners) obtained a special medal and promotional Pokemon card, both of which are considered to be extremely rare collector's items today, commanding gigantic prices online.

The final round of events with unique moves were the Pokemon Fan Club Chairman's Fearow and Rapidash, which were distributed with Pay Day in the August 1998 issue of CoroCoro magazine. They were at levels 25 and 40, respectively, and were otherwise normal Pokemon. This distribution was part of a greater "Pokemon Stamp" campaign where readers could obtain various collectible stamps, which featured the Red and Blue art sets on them. These weren't "real" postage stamps, though, just collectible ones. These stamps would continue being produced well into the 2000s and beyond, featuring later generation art sets.

Mew
mew.png
Mew needs no introduction, being one of the most widely distributed Pokemon of its era and having a very heavy influence on RBY Ubers with its Swords Dance sets. It was most commonly distributed with a 5/10/1/12/5 DV spread, although exceptions exist, and the 2016 Virtual Console versions of the game had real-life events where players could get a Mew with 15 DVs in every stat. Most of the time, Mew was distributed at level 5. Mew was given out in many, many events worldwide, often in tournaments and other large gatherings. There have been some "groups" that have been identified, such as the YOSHIDA Mew, Nintendo character OTs, and more, giving each Mew a degree of intrigue.
 

Attachments

Last edited:

Plague von Karma

Banned deucer.
I'm working on this some more, but since I'm on the Yellow section I want to clarify that I already have HTML tables for the Yellow moveset differences, as I did it for a prior project. These are from a converter, as they were originally Excel files, but it's far more presentable than whatever horrific XenForo table comes from the lack of cell merging. They're placed at the appropriate points in the OP for the eventual HTMLer.
 
Last edited:

Plague von Karma

Banned deucer.
Ok, this is probably ready for a round of QC. I have no idea what people would check this considering it's a rather niche subject that not many people have looked through in their lives, but hey, it's ready.

I considered adding Amnesia Psyduck and Surfing Pikachu and I should probably do that; I'll let whoever looks at this decide for me as doing the deep dive on the Japanese events actually floored me.
 
Last edited:

shiny finder

forever searching
is a Community Leaderis a Programmeris a Smogon Discord Contributoris a Site Content Manager Alumnusis a Top Social Media Contributor Alumnusis a Senior Staff Member Alumnusis a Community Contributor Alumnusis a Contributor Alumnus
Chatot Wrangler
Currently unsure as to how far I want to go here. These games introduce a deceptively large amount of differences, some of which mean nothing, while others can mean quite a bit. Yellow has a shockingly large amount of things so I may trim this down to just the meaningful changes like I did in these articles. Feel free to give your thoughts in the replies.

If I am to trim this down, it'd mean removing the Game Corner section and most of the Wild Encounter stuff from the Blue JP section, so it may look a bit bare, but it would also make it far easier to cover Yellow. In which case, I would categorise this article as "Learnset Legality Changes by Yellow and Japanese Blue", which would feature Blue JP's stuff as an aside or something. I dunno, just kinda spitballing here.
It feels like a nice balance currently. If this is the bulk of the changes, then I think it's fine. If there's considerably more, Idt it's worth the hassle of including every nuance, unless some of those are relatively significant. Granted it's probably significant to somebody, but I'd question the effort vs payoff ratio to go super deep and try to capture everything.

As for the name, could keep it as is and go with something like "Legality Changes by Yellow and Japanese Blue." Since the in-game trade does does have DV implications like you point out.

All that said, this seems fine. I'll tag some of the wifi crew just in case, so hopefully between them and your Gen 1 crew hopefully that'll cover everything.

Paging Xen Skadiv Lego Tatertot in case you have any thoughts/feedback. Or know of anyone for that matter.

Thanks everyone!
 
All of the Japanese Pokémon Blue info is true; however, I couldn't check the specific encounter rates for pokémon like Jynx and Ditto because they're not in Bulbapedia.

I also checked all the info of Pokémon Yellow except the second set of codes. All the info is right, except the code that says that Psyduck can learn Amnesia via Pokémon Stadium Zero, that is incorrect.

<td class="tg-0pky">Pokemon Stadium JP, Pokemon Stadium</td>​

Maybe the programmer was trying to say "Pocket Monsters Stadium 2"?

Fearow with Pay Day was given away at level 25, while Rapidash with Pay Day was given away at level 40, that info is not found in the first set of codes. You can find the info of those event Pokémon here.

The flying Pikachu was given away at level 5, it could be evolved inmediately into Raichu at that same level; the info of both pokémon is missing in the first set of codes. The info of those event Pokémon can be found here.

The Surfing Pikachu was given away at level 5; however, Pikachu and Raichu could learn Surf earlier if you caught a level 3 Pikachu in the Viridian Forest and then you taught it the move via Pokémon Stadium Zero or Pokémon Stadium 1.

The Dragon Rage Magikarp was given away at level 15, which improves the fish's performance a bit in the Japanese Pika Cup and other formats. The info of the Dragon Rage Magikarp's level is also absent in the code, you can find the info of the event here.
 
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Plague von Karma

Banned deucer.
I commissioned a close friend named EyeDonutz that does pixel art for this article, just finished last night. Here's Tauros using Blizzard, in the Red/Blue Safari Zone palette. They don't have a Smogon account, so hopefully the eventual HTMLer can account for that haha

TaurosBlizzard.png


EDIT: pacattacc corrected an NU-related fact in DMs, and shiny finder has approved the article for GP.
 
Last edited:

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Introduction
Every Pokemon generation introduces changes to legality halfway through, be it through events, updates to software, third versions, or something else. The first generation is no exception to this, featuring many minor changes across its second wave of releases. While Pokemon Red and Green were the first games released in Japan, Blue was later released through a Corocoro Magazine CoroCoro magazine mail order promotion in 1997. It later got re-released for retail alongside Pokemon Yellow, arguably making them sequel titles.

tbh idk if it's CoroCoro or Corocoro as I've seen both (mostly favoring CoroCoro). The official name has Comic rather than Magazine tho.

This guide will go over changes that made a significant difference to the Pokemon themselves, such as access to better DVs or movepool changes.

Japanese Blue version Version
The Japanese version of Pokemon Blue is actually quite different to the Pokemon Blue that we got in the west West; the version we got had legality based on Pokemon Green, while still using a translated script from Japanese Blue, plus the updated sprites. This is why the "Raichu evolved" error got left in Cinnabar Lab, which led to various playground myths back in the '90s, which that turned out to be partly right with the revelation of Gorochu's removal during the original game's development. It's also the reason MissingNo. gets a glitched Pokedex entry in the international versions of Red and Blue, as it wasn't translated and thus calls invalid characters. Overall, our Blue version was effectively a mish-mash mishmash of Green and Japanese Blue.

So what was in this Japanese Blue version, then? Let's go over that first.

Japanese Blue introduced the usual changes you would expect from a Pokemon version of this era: different wild encounter tables, Game Corner prizes, Celadon Mart items, and in-game trades. Because of this, though, the game introduces some otherwise unobtainable Pokemon (RC) and thus legality that is Japan-exclusive.

In-Game Trades
The main change Japanese Blue brings is its in-game trades, which are eligible for perfect DVs by virtue of not being tied to encounter rates. These trades are noticeably better than what the base games have to offer, notably offering powerful Pokemon like Tauros and Gengar (RC) as well as trade evolutions like Graveler and Haunter. These changes also allow Tauros to have perfect DVs, making it the only game capable of providing an unrestricted King of Gen 1.

this is kinda repetitive imo, since we already established that Tauros is an in-game trade, and thus is eligible perfect DVs. If you really want to highlight Tauros, perhaps something like "Because Tauros is only able to have perfect DVs in Japanese Blue, it is the only game capable..." or "Because Tauros is a regular encounter in the other games, JPN Blue is the only game capable...", which I think has a slightly different nuance.


LocationPokemon to TradePokemon received ReceivedNickname (Japanese)
Route 2JigglypuffMr. Mimeまさる (Masaru)
Underground Path (Route 5)RattataPoliwagロモたん (Romo-tan)
Route 11RhydonKangaskhanロダン (Rodan)
Route 18PersianTaurosぎゅうた (Gyuuta)
Cerulean CityMachokeHaunter ~ Gengar*ゴーすけ (Goosuke)
Vermillion CityPidgeyFarfetch'dアッカ (Akka)
Cinnabar LabKadabraGraveler ~ Golem*さぶろう (Saborou Saburou)
Cinnabar LabSeelSlowpokeオスカル (Osukaru)
Cinnabar LabGrowlitheKrabbyどうらく (Douraku)
Unused Trade**ButterfreeBeedrillチクチク (Chikuchiku)
*The evolution of these Pokemon cannot be cancelled. Both Pokedex entries are filled.
**This trade can be obtained through glitches, though it is obviously illegitimate.

These trades also have an effect on the minimum levels you can obtain some Pokemon at. This makes three Pokemon eligible for the official Pika Cup format through some fairly complex in-game trading. In fact, because of another localisation localization #Murica error in Pokemon Stadium, each of these Pokemon can be seen in Round 2 (RC) despite being unobtainable internationally, which can be fairly confusing for those unaware. Golem and Kangaskhan are notably quite powerful in the format, changing the metagame a good bit.
  • An eligible Golem can be obtained through trading a Level level 16 Kadabra at Cinnabar Lab.​
    • This means its minimum level is 16, which makes the Golem in Stadium's Round 2 completely illegal!​
  • An eligible Kangaskhan can be obtained by catching a Level 15 Golduck by using Surf on Route 6 using Surf on Route 6 to catch a level 15 Golduck (5% encounter) (RC) and trading it with Yellow version. Once in Yellow, trade for the Rhydon at Cinnabar Lab. After that, trade this Rhydon back to Japanese Blue and trade for the Kangaskhan at Route 11. This nets you a Level level 15 Kangaskhan.​
  • An eligible Muk can be obtained by doing the Kangaskhan method above and subsequently trading it for the Muk in Pokemon Yellow's Cinnabar Lab.​

Wild Encounters
As is tradition with each version, various wild encounters were changed, including some that are quite interesting. Because Lickitung and Jynx are no longer obtainable via trades in Japanese Blue, they're instead distributed to the Safari Zone and Seafoam Islands, respectively.
PokemonLocationLevel RangeEncounter Percentage
DittoRock Tunnel B1FLevel 1810%
LickitungSafari Zone EastLevel 254%
LickitungSafari Zone WestLevel 281%
JynxSeafoam Islands B2FLevel 371%
JynxSeafoam Islands B4FLevel 394%
RapidashCerulean Cave 1FLevel 4910%
RaticateCerulean Cave B1FLevel 5210%
ClefairyCerulean Cave B2FLevel 6410%

Because of these changes, Japanese Blue makes it possible to nickname Jynx without resetting for the same Trainer ID, which has an astronomically low chance of succeeding. Japanese Blue was also the first time this applied to Lickitung before later being put in Yellow's Cerulean Cave. Because of both Lickitung and Jynx being overworld are wild encounters, however, it is impossible for them to get perfect DVs (RC) instead being and are restricted to spreads that either reduce their Speed or reduce their Special. It's also impossible for a wild Lickitung to learn Wrap due to being obtained at quite a high level, causing it to learn Defense Curl over it.

Yellow version Version
Pokemon Yellow brought far more significant changes overall, adding entire moves to Pokemon's learnsets alongside the usual changes each version of RBY experiences. Its encounter tables also naturally brought forth entire new changes to DV legality, though listing everything is nigh-impossible.

This table goes over the moves added to each Pokemon's learnset: (colon)
Putting table changes here:
- Like above, think it's CoroCoro Comic
- Remove period after Pikachu in Raichu entry


HTML:
<table class="tg">
<thead>
  <tr>
    <th class="tg-9353">Pokemon</th>
    <th class="tg-iiav">Added Move(s)</th>
    <th class="tg-9353">Method</th>
  </tr>
</thead>
<tbody>
  <tr>
    <td class="tg-7btt">Charizard</td>
    <td class="tg-9wq8">Fly</td>
    <td class="tg-0pky">HM02</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Butterfree</td>
    <td class="tg-9wq8">Gust</td>
    <td class="tg-0pky">L28</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Flash</td>
    <td class="tg-0pky">HM05</td>
  </tr>
  <tr>
    <td class="tg-7btt">Fearow</td>
    <td class="tg-9wq8">Pay Day</td>
    <td class="tg-0pky">Pokemon Stamp Event (August 1998)</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="5">Pikachu</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-0pky">L6</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Slam</td>
    <td class="tg-0pky">L20</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Light Screen</td>
    <td class="tg-0pky">L50</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Fly</td>
    <td class="tg-0pky">Corocoro Magazine Event (c.1997)</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Surf</td>
    <td class="tg-0pky">Corocoro Magazine Event (c.1997), Pokemon Stadium Move Tutor</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="5">Raichu</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-lboi" rowspan="5">Evolve Pikachu.</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Slam</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Light Screen</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Fly</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Surf</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="3">Venonat</td>
    <td class="tg-9wq8">Supersonic</td>
    <td class="tg-0pky">L11</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Confusion</td>
    <td class="tg-0pky">L19</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Flash</td>
    <td class="tg-0pky">HM05</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="3">Venomoth</td>
    <td class="tg-9wq8">Supersonic</td>
    <td class="tg-0pky">L1, Evolve Venonat<br></td>
  </tr>
  <tr>
    <td class="tg-9wq8">Confusion</td>
    <td class="tg-0pky">L1, Evolve Venonat</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Flash</td>
    <td class="tg-0pky">HM05</td>
  </tr>
  <tr>
    <td class="tg-7btt">Diglett</td>
    <td class="tg-9wq8">Cut</td>
    <td class="tg-0pky">HM01</td>
  </tr>
  <tr>
    <td class="tg-7btt">Dugtrio</td>
    <td class="tg-9wq8">Cut</td>
    <td class="tg-0pky">HM01</td>
  </tr>
  <tr>
    <td class="tg-7btt">Psyduck</td>
    <td class="tg-9wq8">Amnesia</td>
    <td class="tg-0pky">Pokemon Stadium</td>
  </tr>
  <tr>
    <td class="tg-7btt">Golduck</td>
    <td class="tg-9wq8">Amnesia</td>
    <td class="tg-0pky">Evolve an Amnesia Psyduck</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Mankey</td>
    <td class="tg-9wq8">Low Kick</td>
    <td class="tg-0pky">L9</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Screech</td>
    <td class="tg-0pky">L45</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Primeape</td>
    <td class="tg-9wq8">Low Kick</td>
    <td class="tg-0pky">L1, L9, Evolve Mankey</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Screech</td>
    <td class="tg-0pky">L45</td>
  </tr>
  <tr>
    <td class="tg-7btt">Kadabra</td>
    <td class="tg-9wq8">Kinesis</td>
    <td class="tg-0pky">L1</td>
  </tr>
  <tr>
    <td class="tg-7btt">Alakazam</td>
    <td class="tg-9wq8">Kinesis</td>
    <td class="tg-0pky">L1, Evolve Kadabra</td>
  </tr>
  <tr>
    <td class="tg-7btt">Rapidash</td>
    <td class="tg-9wq8">Pay Day</td>
    <td class="tg-0pky">Pokemon Stamp Event (August 1998)</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Cubone</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-0pky">L13</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Headbutt</td>
    <td class="tg-0pky">L18</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Marowak</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-0pky">L1, L13</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Headbutt</td>
    <td class="tg-0pky">L18</td>
  </tr>
  <tr>
    <td class="tg-7btt">Chansey</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-0pky">L1</td>
  </tr>
  <tr>
    <td class="tg-7btt">Tangela</td>
    <td class="tg-9wq8">Vine Whip</td>
    <td class="tg-0pky">L29</td>
  </tr>
  <tr>
    <td class="tg-7btt">Scyther</td>
    <td class="tg-9wq8">Wing Attack</td>
    <td class="tg-0pky">L50</td>
  </tr>
  <tr>
    <td class="tg-7btt">Pinsir</td>
    <td class="tg-9wq8">Bind</td>
    <td class="tg-0pky">L21</td>
  </tr>
  <tr>
    <td class="tg-7btt">Magikarp</td>
    <td class="tg-9wq8">Dragon Rage</td>
    <td class="tg-0pky">Tamamushi University Event (July 1998)</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Eevee</td>
    <td class="tg-9wq8">Growl</td>
    <td class="tg-0pky">L16</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Focus Energy</td>
    <td class="tg-0pky">L36</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="3">Vaporeon</td>
    <td class="tg-9wq8">Growl</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Focus Energy</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Aurora Beam</td>
    <td class="tg-0pky">L36</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Jolteon</td>
    <td class="tg-9wq8">Growl</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Focus Energy</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="3">Flareon</td>
    <td class="tg-9wq8">Growl</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Focus Energy</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Smog</td>
    <td class="tg-0pky">L42</td>
  </tr>
</tbody>
</table>
The most notable change Yellow brought to the game was actually having a Pokemon that learns Kinesis. Prior to Yellow's release, Kadabra couldn't learn Kinesis, causing it the move to become unused outside of glitches or Metronome. Once Yellow was released, Kadabra became able to use Kinesis at L1, meaning that wild Kadabra come with the move. However, this also means that Kinesis Kadabra from Yellow cannot have perfect DVs; to get perfect DVs, it must be obtained as a Game Corner prize as an Abra.


Pinsir was blessed with the move Bind, allowing it to be less of a momentum sink. Bind can act as a pseudo-U-turn in RBY, preventing Pokemon from moving as the user switches. It also allows Pinsir to chip Pokemon into Swords Dance + Hyper Beam range, which makes it a terror against paralyzed teams. Without this move, Pinsir is often forced out by Ghost Pokemon like Gengar, (AC) while letting it get off Hypnosis, as it only learns Normal- and Fighting-type moves (RC) with only Seismic Toss dealing otherwise and only has Seismic Toss to deal actual damage. With Bind, it's possible to pivot out into a counter outright.

While only relevant in Stadium, Jolteon got bestowed with Focus Energy, a move that quarters the user's critical hit rate in RBY. In Stadium, however, it raises it by about 66%, giving it a savage critical hit rate of 71%. This makes it into a deadly sweeper in formats using it, such as Stadium OU or Poke Cup. (AP) though However, it also comes at the opportunity cost of moves like Rest or Pin Missile, as the combination of Thunder Wave + Thunderbolt + Double Kick is almost undroppable. last sentence was kinda long

Charizard also got to learn learns Fly, which not only gives it a STAB move, but also a decent way to abuse the semi-invulnerability glitch; if it experiences paralysis or confusion while flying, it'll get stuck in the air until it uses Fly again. Because it learns Swords Dance, it also means that an invulnerable Charizard is very capable of gimmicking its way to victory in niche formats that allow the moves, such as the in-game Yellow's version of Poke Cup.

While an insignificant change in the grand scheme of things, Yellow version was the first time Scyther actually got a STAB move: prior to this, Scyther only learned Normal-type attacks. Ergo, it was literally incapable of winning against Gengar, as Struggle is Normal-type in RBY. While Wing Attack does little to prevent such a humiliating defeat, it at least allows Scyther to deal damage to it.

However, as this the following table implies, Pokemon Yellow doesn't just add moves to a Pokemon's movepool, it also shifts the levels around accordingly. This is mainly to balance in-game playthroughs more effectively. Because of this, there is some minor significance when applying this to level-limited formats, such as the Stadium Cups. In fact, it's arguably optimal to use Pokemon Yellow if you aim to play through these without glitches.

- Quite a few notes and remarks have an L##. It should be a.
- Interestingly, in both versions, only Nidoking is set to learn Thrash at L23. > Interestingly, in both versions, only Nidoking learns Thrash at L23.
- Venemoth and Primeape have ~ in their levels. I think this is supposed to be the column delimiter?
- This could also be considered a trainer nerf. > Trainer (Gyarados Entry)
- Yellow can be used to get Quick Attack Eevee prior to L25 in Petit Cup > for Petit Cup
- Given Water Gun is a TM, this doesn't change anything unlike Tail Whip and Bite. > ...anything, (AC) unlike Tail White and Bite
- This legalizes Tail Whip Vaporeon for use in Nintendo Cup '98 if Yellow Moves are allowed. (and similar entries) > moves
- Due to the fact a Pokemon can only learn one move via Level-Up at a time, Haze is prioritized instead. > level-up
- The only way to get Mist learned in Yellow is by levelling up Vaporeon in the Pokemon Day Care near Cerulean City. > The only way to learn Mist in Yellow is by leveling up Vaporeon in the Pokemon Day Care near Cerulean City.
- This legalizes Ember Flareon for use for use in Nintendo Cup '98 if Yellow Moves are allowed. > again, moves. Also for use is doubled
- This legalizes Tail Whip Flareon for use for use in Nintendo Cup '98 if Yellow Moves are allowed. > ^


HTML:
<table class="tg" style="margin-left:auto; margin-right:auto";>
<thead>
  <tr>
    <th class="tg-t2cw">Pokemon</th>
    <th class="tg-t2cw">Move(s)</th>
    <th class="tg-t2cw">Pokemon Red</th>
    <th class="tg-t2cw">Pokemon Yellow</th>
    <th class="tg-t2cw">Notes and Remarks</th>
  </tr>
</thead>
<tbody>
  <tr>
    <td class="tg-wa1i" rowspan="7">Butterfree</td>
    <td class="tg-baqh">Confusion</td>
    <td class="tg-nrix">L12<br></td>
    <td class="tg-nrix">L10</td>
    <td class="tg-cly1"></td>
  </tr>
  <tr>
    <td class="tg-baqh">PoisonPowder</td>
    <td class="tg-nrix">L15</td>
    <td class="tg-nrix">L13</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-baqh">Stun Spore</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-baqh">Sleep Powder</td>
    <td class="tg-nrix">L17</td>
    <td class="tg-nrix">L15</td>
    <td class="tg-0lax">Yellow is the only way to get an L15 Butterfree with Sleep Powder for Pika Cup.</td>
  </tr>
  <tr>
    <td class="tg-baqh">Supersonic</td>
    <td class="tg-nrix">L21</td>
    <td class="tg-nrix">L18</td>
    <td class="tg-0lax">Yellow legalized Supersonic Butterfree for Pika Cup.</td>
  </tr>
  <tr>
    <td class="tg-baqh">Whirlwind</td>
    <td class="tg-nrix">L26</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-baqh">Psybeam</td>
    <td class="tg-nrix">L32</td>
    <td class="tg-nrix">L34</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Pikachu</td>
    <td class="tg-nrix">Thunder Wave</td>
    <td class="tg-nrix">L9</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-nrix">L11</td>
    <td class="tg-0lax">Yellow is the only way to get an L15 Pikachu or Raichu with Quick Attack for Pika Cup.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Thunderbolt</td>
    <td class="tg-nrix">Not learned</td>
    <td class="tg-nrix">L26</td>
    <td class="tg-0lax">Pikachu is the only Pokemon in Generation I to learn Thunderbolt via Level Up.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Thunder</td>
    <td class="tg-nrix">L43</td>
    <td class="tg-nrix">L41</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Swift</td>
    <td class="tg-nrix">L26</td>
    <td class="tg-nrix">Removed</td>
    <td class="tg-0lax">Pikachu has to learn Swift via TM in Yellow instead.</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Nidoran-F</td>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">L17</td>
    <td class="tg-0lax">Tradebacking a Nidoran-F from Yellow can get Double Kick and Poison Sting onto an L15 Nidoran-F. This can be used to get an L16 Double Kick + Poison Sting Nidoqueen.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L21</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L29</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">You can technically use RGB to save a level to use Bite in Petit Cup, but it's outclassed by better options.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Fury Swipes</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-nrix">L38</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L43</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax">Yellow legalized Double Kick Nidoran-F for Pika Cup.</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Nidorina</td>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">L19</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L32</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Fury Swipes</td>
    <td class="tg-nrix">L41</td>
    <td class="tg-nrix">L46</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L50</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Nidoqueen</td>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">From Nidoran-F or Nidorina</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-cly1" rowspan="2">Only relevant for Trainers.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Nidoran-M</td>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14<br></td>
    <td class="tg-nrix">L17</td>
    <td class="tg-0lax">Tradebacking a Nidoran-M from Yellow can get Double Kick and Poison Sting onto an L15 Nidoran-M. This can be used to get an L16 Double Kick + Poison Sting Nidoking.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Focus Energy</td>
    <td class="tg-nrix">L21</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Fury Attack</td>
    <td class="tg-nrix">L29</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">RGB can be used to learn Fury Attack a level earlier. Considering Focus Energy, this can be a gimmick set in Stadium, but Body Slam is normally better for consistent damage.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Horn Drill</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-nrix">L38</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L43</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Nidorino</td>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">L19</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Focus Energy</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Fury Attack</td>
    <td class="tg-nrix">L32</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Horn Drill</td>
    <td class="tg-nrix">L41</td>
    <td class="tg-nrix">L46</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L50</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Nidoking</td>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">From Nidoran-M or Nidorino</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax" rowspan="2">Only relevant for Trainers overall.<br><br>Interestingly, in both versions, only Nidoking is set to learn Thrash at L23. This creates learnset incompatibilities with Focus Energy and Fury Attack. It also creates an incompatibility with Double Kick in Yellow-banned formats.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-amwm">Venonat</td>
    <td class="tg-baqh">PoisonPowder</td>
    <td class="tg-baqh">L24 ~ L22</td>
    <td class="tg-0lax"></td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Venomoth</td>
    <td class="tg-nrix">Leech Life</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">PoisonPowder</td>
    <td class="tg-nrix">L1 or L24</td>
    <td class="tg-nrix">L22</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-amwm">Primeape</td>
    <td class="tg-baqh">Rage</td>
    <td class="tg-baqh">N/A ~ L28</td>
    <td class="tg-0lax"></td>
    <td class="tg-0lax">Primeape already got Rage via TM20, making this a largely irrelevant change.</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Kadabra</td>
    <td class="tg-nrix">Confusion</td>
    <td class="tg-nrix">L1 or L16</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-cly1" rowspan="2">Entries removed to make room for Kinesis.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Disable</td>
    <td class="tg-nrix">L1 or L20</td>
    <td class="tg-nrix">L20</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Alakazam</td>
    <td class="tg-nrix">Confusion</td>
    <td class="tg-nrix">L1 or L16</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Disable</td>
    <td class="tg-nrix">L1 or L20</td>
    <td class="tg-nrix">L20</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="3">Tangela</td>
    <td class="tg-nrix">Bind</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L24</td>
    <td class="tg-cly1" rowspan="3">Moves were shifted around to make room for Vine Whip.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Absorb</td>
    <td class="tg-nrix">L29</td>
    <td class="tg-nrix">L27</td>
  </tr>
  <tr>
    <td class="tg-nrix">Growth</td>
    <td class="tg-nrix">L49</td>
    <td class="tg-nrix">L48</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Gyarados</td>
    <td class="tg-nrix">Tackle</td>
    <td class="tg-nrix">From Magikarp</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-cly1" rowspan="5">Rebalanced for the fact it's now catchable. This could also be considered a trainer nerf. However, the Pika Cup Rental Gyarados actually uses the removed attacks at L15, making it an illegal rental.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-nrix">Dragon Rage</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-nrix">Leer</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-nrix">Hydro Pump</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Eevee</td>
    <td class="tg-nrix">Sand-Attack</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax">Yellow can be used to get Quick Attack Eevee prior to L25 in Petit Cup, which is actually really important for its moveset.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L31</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-0lax">This legalizes Tail Whip for use in Petit Cup.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L37</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">This legalizes Bite Eevee for use in Petit Cup on L30 builds, but Body Slam is normally more effective.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Take Down</td>
    <td class="tg-nrix">L45</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="9">Vaporeon</td>
    <td class="tg-nrix">Sand-Attack</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Water Gun</td>
    <td class="tg-nrix">L31</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-0lax">Given Water Gun is a TM, this doesn't change anything unlike Tail Whip and Bite.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L37</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-0lax">This legalizes Tail Whip Vaporeon for use in Nintendo Cup '98 if Yellow Moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L40</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">This legalizes Bite Vaporeon for use in Nintendo Cup '98 if Yellow Moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Acid Armor</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-nrix">L47</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Haze</td>
    <td class="tg-nrix">L44</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-0lax" rowspan="2">Due to the fact a Pokemon can only learn one move via Level-Up at a time, Haze is prioritized instead.<br><br>The only way to get Mist learned in Yellow is by levelling up Vaporeon in the Pokemon Day Care near Cerulean City.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Mist</td>
    <td class="tg-nrix">L48</td>
    <td class="tg-nrix">L42</td>
  </tr>
  <tr>
    <td class="tg-nrix">Hydro Pump</td>
    <td class="tg-nrix">L54</td>
    <td class="tg-nrix">L52</td>
    <td class="tg-0lax">Hydro Pump can be used two levels early in Poke Cup.</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="9">Jolteon</td>
    <td class="tg-nrix">Sand-Attack</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Thundershock</td>
    <td class="tg-nrix">L31</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-0lax">This legalizes Thundershock Jolteon for use in Nintendo Cup '98 if Yellow Moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L37</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-0lax">This legalizes Tail Whip Jolteon for use in Nintendo Cup '98 if Yellow Moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Thunder Wave</td>
    <td class="tg-nrix">L40</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-nrix">L40</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Pin Missile</td>
    <td class="tg-nrix">L44</td>
    <td class="tg-nrix">L47</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Agility</td>
    <td class="tg-nrix">L48</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Thunder</td>
    <td class="tg-nrix">L54</td>
    <td class="tg-nrix">L52</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="9">Flareon</td>
    <td class="tg-nrix">Sand-Attack</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Ember</td>
    <td class="tg-nrix">L31</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-0lax">This legalizes Ember Flareon for use for use in Nintendo Cup '98 if Yellow Moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L37</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-0lax">This legalizes Tail Whip Flareon for use for use in Nintendo Cup '98 if Yellow Moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L40</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">This legalizes Bite Flareon for use in Nintendo Cup '98 if Yellow Moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Leer</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-nrix">L47</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Fire Spin</td>
    <td class="tg-nrix">L44</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Flamethrower</td>
    <td class="tg-nrix">L52</td>
    <td class="tg-nrix">L54</td>
    <td class="tg-0lax">Flamethrower can be used two levels early in Poke Cup.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Rage</td>
    <td class="tg-nrix">Not learned</td>
    <td class="tg-nrix">L28</td>
    <td class="tg-0lax">Rage was already learned via TM20, so it doesn't really matter.</td>
  </tr>
</tbody>
</table>
The Nidos Nidoran lines famously got Double Kick at L12 level 12 via Yellow version, which is partly what made the early-game bearable when being faced down by Brock. This gives them some minor extra coverage in Pika Cup, although you're probably better off using stronger moves like Earthquake, Thunderbolt, and Blizzard. It's technically possible to use Pokemon Red to learn Poison Sting prior to the threshold of level 15, though it's a largely useless move.

Most Eeveelutions got some love here; Eevee gets access to Quick Attack prior to L25 level 25, making it a bit more viable for a Petit Cup playthrough in Stadium considering its awful base movepool. Vaporeon and Flareon also got access to their strongest moves at L52 level 52 &mdash; Hydro Pump and Flamethrower, (AC) respectively &mdash; making them slightly easier to fit on balanced level teams in Poke Cup.

Events

Stadium Gift Pokemon
The first Japanese Stadium title &mdash; often colloquially referred to as "Stadium Zero" &mdash; allows Pikachu to be taught Surf if one clears the Level level 30 cup based on Nintendo Cup '98. In the second Stadium title that was released internationally, if one clears Prime Cup Master Ball Round 2 with a Pikachu in their party without saving, so long as it is picked in the final battle, Pikachu can also be taught Surf. This is the most accessible method of accessing a Surfing Pikachu obtaining a Pikachu with Surf, which is crucial to its success competitively, as well as accessing the Pikachu's Beach minigame in Pokemon Yellow. idk if surfing pika is too informal.

Additionally, if one gets all 151 Pokemon in the Hall of Fame in Pokemon Stadium, they can receive a Level level 15 Amnesia Psyduck, which single-handedly turns its evolution from a thoroughly mediocre Pokemon into a significant threat, giving it a much-needed identity as a special sweeper. In fact, Amnesia Golduck is so strong, it was banned from RBY NU in 2020!

Japan-exclusive Event Pokemon
In Japan, a select few Pokemon were distributed that had otherwise unobtainable moves, making them the first to be this way. kinda implied While generally unimpressive, these would pave the way for more famous event distributions, such as the notorious New York Pokemon Center events in GSC. Because the RBY events were only available in Japan, these Pokemon cannot be used in international games, as trading them across regions causes save data corruption. These events are considered to be among the rarest of all time, normally being distributed to a pool of 20 players each. Due to the nature of these events, they are also Japan-exclusive legality, (AC) akin to Japanese Blue's DVs.

Pikachu first got Surf via event on June 12th, 1997, via the "Pokemon 2 Idea Contest" in Shogakukan's Corocoro Magazine CoroCoro magazine. For this event, readers would submit submitted Pokemon ideas for the then-upcoming Pokemon Gold and Silver titles. Tsunekazu Ishihara and Satoshi Tajiri would select selected their Top top 20 contestants, whom would send who sent in their cartridges to receive it the Pikachu. Therefore, this Pikachu is extremely rare. This distribution would be repeated twice as a kind of raffle in later issues, of which 20 players would win each each with 20 winners. However, two similar distributions were also performed for a Fly Pikachu, which is unobtainable in the west West. Both Pikachu were distributed at Level level 5, though a Surf Pikachu can theoretically be obtained at Level level 3 through Stadium's Move Tutor.

Shogakukan would also distributed a special Dragon Rage Magikarp at Level level 15 via the "Tamamushi University Hyper-Test" event in July 1998, wherein players would submit submitted a series of answers to six tests in the Corocoro Magazine CoroCoro magazine issues. The top 1,000 "students" of these Pokemon exams would be were entered into a raffle to be among 20 "professors" to obtain the legendary Magikarp. The rest (jncluding the raffle winners) would obtain obtained a special medal and promotional Pokemon card, both of which are considered to be extremely rare collector's items today, commanding gigantic prices online.


note on tense: I think the simple past fits better above for (a) consistency and (b) the fact that the cited events were single time occurences, so we don't really need the nuance of an ongoing past action. This is in contrast to the compaign below which was ongoing for years.

The final round of events with unique moves were the Pokemon Fan Club Chairman's Fearow and Rapidash, which were distributed with Pay Day in the August 1998 issue of Corocoro Magazine CoroCoro magazine. They were at levels 25 and 40, respectively, and were otherwise normal Pokemon. This distribution was part of a greater "Pokemon Stamp" campaign, where readers could obtain various collectible stamps, which featured the Red and Blue art sets on them. These weren't "real" postage stamps, though, just collectible ones. These stamps would continue being produced well into the 2000s and beyond, featuring later generation art sets.

Mew
Mew needs no introduction, being one of the most widely distributed Pokemon of its era and having a very heavy influence on RBY Ubers with its Swords Dance sets. It was most commonly distributed with a 5/10/1/12/5 DV spread, although exceptions exist, and the 2016 Virtual Console versions of the game had real-life events where players could get a Mew with 15 DVs in every stat. Most of the time, Mew was distributed at Level level 5. Mew was given out in many, many events worldwide, often in tournaments and other large gatherings. There have been some "groups" that have been identified, such as the YOSHIDA Mew, Nintendo character OTs, and more, giving each Mew a degree of intrigue.
 

Adeleine

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Introduction
Every Pokemon generation introduces changes to legality halfway through, be it through events, updates to software, third versions, or something else. The first generation is no exception to this, featuring many minor changes across its second wave of releases. While Pokemon Red and Green were the first games released in Japan, Blue was later released through a CoroCoro magazine mail order promotion in 1997. It later got re-released for retail alongside Pokemon Yellow, arguably making them sequel titles.

This guide will go over changes that made a significant difference to the Pokemon themselves, such as access to better DVs or movepool changes.

Japanese Blue Version
The Japanese version of Pokemon Blue is actually quite different to the Pokemon Blue that we got in the West; the version we got had legality based on Pokemon Green (remove comma) while still using a translated script from Japanese Blue, plus the updated sprites. This is why the "Raichu evolved" error got left in Cinnabar Lab, which led to various playground myths back in the '90s that turned out to be partly right with the revelation of Gorochu's removal during the original game's development. It's also the reason MissingNo. gets a glitched Pokedex entry in the international versions of Red and Blue, as it wasn't translated and thus calls invalid characters. Overall, our Blue version was effectively a mishmash of Green and Japanese Blue.

So what was in this Japanese Blue version, then? Let's go over that first.

Japanese Blue introduced the usual changes you would expect from a Pokemon version of this era: different wild encounter tables, Game Corner prizes, Celadon Mart items, and in-game trades. Because of this, though, the game introduces some otherwise unobtainable Pokemon (removed checker mark) and thus legality that is Japan-exclusive.

In-Game Trades
The main change Japanese Blue brings is its in-game trades, which are eligible for perfect DVs by virtue of not being tied to encounter rates. These trades are noticeably better than what the base games have to offer, notably offering powerful Pokemon like Tauros and Gengar (removed checker mark) as well as trade evolutions Pokemon evolving by trade (or something else, but id call golem and graveler the actual "trade evolutions" bc they're evolutionary formes acquired by trade) like Graveler and Haunter.

this is kinda repetitive imo, since we already established that Tauros is an in-game trade, and thus is eligible perfect DVs. If you really want to highlight Tauros, perhaps something like "Because Tauros is only able to have perfect DVs in Japanese Blue, it is the only game capable..." or "Because Tauros is a regular encounter in the other games, JPN Blue is the only game capable...", which I think has a slightly different nuance.

LocationPokemon to TradePokemon received ReceivedNickname (Japanese)
Route 2JigglypuffMr. Mimeまさる (Masaru)
Underground Path (Route 5)RattataPoliwagロモたん (Romo-tan)
Route 11RhydonKangaskhanロダン (Rodan)
Route 18PersianTaurosぎゅうた (Gyuuta)
Cerulean CityMachokeHaunter ~ Gengar*ゴーすけ (Goosuke)
Vermillion CityPidgeyFarfetch'dアッカ (Akka)
Cinnabar LabKadabraGraveler ~ Golem*さぶろう (Saborou Saburou)
Cinnabar LabSeelSlowpokeオスカル (Osukaru)
Cinnabar LabGrowlitheKrabbyどうらく (Douraku)
Unused Trade**ButterfreeBeedrillチクチク (Chikuchiku)
*The evolution of these Pokemon cannot be cancelled. Both Pokedex entries are filled.
**This trade can be obtained through glitches, though it is obviously illegitimate.


These trades also have an effect on the minimum levels you can obtain some Pokemon at. This makes three Pokemon eligible for the official Pika Cup format through some fairly complex in-game trading. In fact, because of another localization error in Pokemon Stadium, each of these Pokemon can be seen in Round 2 (removed checker mark) despite being unobtainable internationally, which can be fairly confusing for those unaware. Golem and Kangaskhan are notably quite powerful in the format, changing the metagame a good bit.
  • An eligible Golem can be obtained through trading a level 16 Kadabra at Cinnabar Lab.
    • This means its minimum level is 16, which makes the Golem in Stadium's Round 2 completely illegal!
  • An eligible Kangaskhan can be obtained by using Surf on Route 6 to catch a level 15 Golduck (5% encounter) and trading it with Yellow. Once in Yellow, trade for the Rhydon at Cinnabar Lab. After that, trade this Rhydon back to Japanese Blue and trade for the Kangaskhan at Route 11. This nets you a level 15 Kangaskhan.
  • An eligible Muk can be obtained by doing the Kangaskhan method above and subsequently trading it for the Muk in Pokemon Yellow's Cinnabar Lab.

Wild Encounters
As is tradition with each version, various wild encounters were changed, including some changes that are quite interesting. Because Lickitung and Jynx are no longer obtainable via trades in Japanese Blue, they're instead distributed to the Safari Zone and Seafoam Islands, respectively.
PokemonLocationLevel RangeEncounter Percentage
DittoRock Tunnel B1FLevel 1810%
LickitungSafari Zone EastLevel 254%
LickitungSafari Zone WestLevel 281%
JynxSeafoam Islands B2FLevel 371%
JynxSeafoam Islands B4FLevel 394%
RapidashCerulean Cave 1FLevel 4910%
RaticateCerulean Cave B1FLevel 5210%
ClefairyCerulean Cave B2FLevel 6410%

Because of these changes, Japanese Blue makes it possible to nickname Jynx without resetting for the same Trainer ID, which has an astronomically low chance of succeeding. Japanese Blue was also the first time this applied to Lickitung before later being it was later put in Yellow's Cerulean Cave. Because both Lickitung and Jynx are wild encounters, however, it is impossible for them to get perfect DVs, (add comma) and are they're restricted to spreads that either reduce their Speed or reduce their Special. It's also impossible for a wild Lickitung to learn Wrap due to being obtained at quite a high level, causing it to learn Defense Curl over it.

Yellow Version
Pokemon Yellow brought far more significant changes overall, adding entire entirely new moves to Pokemon's learnsets alongside the usual changes each version of RBY experiences. Its encounter tables also naturally brought forth entire new changes to DV legality, though listing everything is nigh-impossible.

This table goes over the moves added to each Pokemon's learnset:

HTML:
<table class="tg">
<thead>
  <tr>
    <th class="tg-9353">Pokemon</th>
    <th class="tg-iiav">Added Move(s)</th>
    <th class="tg-9353">Method</th>
  </tr>
</thead>
<tbody>
  <tr>
    <td class="tg-7btt">Charizard</td>
    <td class="tg-9wq8">Fly</td>
    <td class="tg-0pky">HM02</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Butterfree</td>
    <td class="tg-9wq8">Gust</td>
    <td class="tg-0pky">L28</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Flash</td>
    <td class="tg-0pky">HM05</td>
  </tr>
  <tr>
    <td class="tg-7btt">Fearow</td>
    <td class="tg-9wq8">Pay Day</td>
    <td class="tg-0pky">Pokemon Stamp Event (August 1998)</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="5">Pikachu</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-0pky">L6</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Slam</td>
    <td class="tg-0pky">L20</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Light Screen</td>
    <td class="tg-0pky">L50</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Fly</td>
    <td class="tg-0pky">CoroCoro [COLOR=rgb(222, 23, 131)][B]magazine [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]Magazine[/B][/COLOR] Event (c.1997)</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Surf</td>
    <td class="tg-0pky">CoroCoro [COLOR=rgb(222, 23, 131)][B]magazine [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]Magazine[/B][/COLOR] Event (c.1997), Pokemon Stadium Move Tutor</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="5">Raichu</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-lboi" rowspan="5">Evolve Pikachu</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Slam</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Light Screen</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Fly</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Surf</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="3">Venonat</td>
    <td class="tg-9wq8">Supersonic</td>
    <td class="tg-0pky">L11</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Confusion</td>
    <td class="tg-0pky">L19</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Flash</td>
    <td class="tg-0pky">HM05</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="3">Venomoth</td>
    <td class="tg-9wq8">Supersonic</td>
    <td class="tg-0pky">L1, Evolve Venonat<br></td>
  </tr>
  <tr>
    <td class="tg-9wq8">Confusion</td>
    <td class="tg-0pky">L1, Evolve Venonat</td>
  </tr>
  <tr>
    <td class="tg-9wq8">Flash</td>
    <td class="tg-0pky">HM05</td>
  </tr>
  <tr>
    <td class="tg-7btt">Diglett</td>
    <td class="tg-9wq8">Cut</td>
    <td class="tg-0pky">HM01</td>
  </tr>
  <tr>
    <td class="tg-7btt">Dugtrio</td>
    <td class="tg-9wq8">Cut</td>
    <td class="tg-0pky">HM01</td>
  </tr>
  <tr>
    <td class="tg-7btt">Psyduck</td>
    <td class="tg-9wq8">Amnesia</td>
    <td class="tg-0pky">Pokemon Stadium</td>
  </tr>
  <tr>
    <td class="tg-7btt">Golduck</td>
    <td class="tg-9wq8">Amnesia</td>
    <td class="tg-0pky">Evolve an Amnesia Psyduck</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Mankey</td>
    <td class="tg-9wq8">Low Kick</td>
    <td class="tg-0pky">L9</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Screech</td>
    <td class="tg-0pky">L45</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Primeape</td>
    <td class="tg-9wq8">Low Kick</td>
    <td class="tg-0pky">L1, L9, Evolve Mankey</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Screech</td>
    <td class="tg-0pky">L45</td>
  </tr>
  <tr>
    <td class="tg-7btt">Kadabra</td>
    <td class="tg-9wq8">Kinesis</td>
    <td class="tg-0pky">L1</td>
  </tr>
  <tr>
    <td class="tg-7btt">Alakazam</td>
    <td class="tg-9wq8">Kinesis</td>
    <td class="tg-0pky">L1, Evolve Kadabra</td>
  </tr>
  <tr>
    <td class="tg-7btt">Rapidash</td>
    <td class="tg-9wq8">Pay Day</td>
    <td class="tg-0pky">Pokemon Stamp Event (August 1998)</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Cubone</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-0pky">L13</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Headbutt</td>
    <td class="tg-0pky">L18</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Marowak</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-0pky">L1, L13</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Headbutt</td>
    <td class="tg-0pky">L18</td>
  </tr>
  <tr>
    <td class="tg-7btt">Chansey</td>
    <td class="tg-9wq8">Tail Whip</td>
    <td class="tg-0pky">L1</td>
  </tr>
  <tr>
    <td class="tg-7btt">Tangela</td>
    <td class="tg-9wq8">Vine Whip</td>
    <td class="tg-0pky">L29</td>
  </tr>
  <tr>
    <td class="tg-7btt">Scyther</td>
    <td class="tg-9wq8">Wing Attack</td>
    <td class="tg-0pky">L50</td>
  </tr>
  <tr>
    <td class="tg-7btt">Pinsir</td>
    <td class="tg-9wq8">Bind</td>
    <td class="tg-0pky">L21</td>
  </tr>
  <tr>
    <td class="tg-7btt">Magikarp</td>
    <td class="tg-9wq8">Dragon Rage</td>
    <td class="tg-0pky">Tamamushi University Event (July 1998)</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Eevee</td>
    <td class="tg-9wq8">Growl</td>
    <td class="tg-0pky">L16</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Focus Energy</td>
    <td class="tg-0pky">L36</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="3">Vaporeon</td>
    <td class="tg-9wq8">Growl</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Focus Energy</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Aurora Beam</td>
    <td class="tg-0pky">L36</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="2">Jolteon</td>
    <td class="tg-9wq8">Growl</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Focus Energy</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-uzvj" rowspan="3">Flareon</td>
    <td class="tg-9wq8">Growl</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Focus Energy</td>
    <td class="tg-0pky">Evolve Eevee</td>
  </tr>
  <tr>
    <td class="tg-c3ow">Smog</td>
    <td class="tg-0pky">L42</td>
  </tr>
</tbody>
</table>
The most notable change Yellow brought to the game was actually having a Pokemon that learns Kinesis. Prior to Yellow's release, Kadabra couldn't learn Kinesis, causing the move to become unused outside of glitches or Metronome. Once Yellow was released, Kadabra became able to use Kinesis at L1, meaning that wild Kadabra come with the move. However, this also means that Kinesis Kadabra from Yellow cannot have perfect DVs; to get perfect DVs, it must be obtained as a Game Corner prize as an Abra.

Pinsir was blessed with the move Bind, allowing it to be less of a momentum sink. Bind can act as a pseudo-U-turn in RBY, preventing Pokemon from moving as the user switches. It also allows Pinsir to chip Pokemon into Swords Dance + Hyper Beam range, which makes it a terror against paralyzed teams. Without this move, Pinsir is often forced out by Ghost Pokemon like Gengar, (AC) while letting it Gengar and Haunter while letting them get off Hypnosis, as it only learns Normal- and Fighting-type moves otherwise and only has Seismic Toss to deal actual damage. actually damage them. With Bind, it's possible to pivot out into a counter outright. an outright counter.

While only relevant in Stadium, Jolteon got bestowed with Focus Energy, a move that quarters the user's critical hit rate in RBY. In Stadium, however, it raises it by about 66%, giving it Jolteon a savage critical hit rate of 71%. This makes it into a deadly sweeper in formats using it, Stadium mechanics, such as Stadium OU or Poke Cup. However, it also comes at the opportunity cost of moves like Rest or Pin Missile, as the combination of Thunder Wave + Thunderbolt + Double Kick is almost undroppable.

Charizard also learns Fly, which not only gives it a Flying-type STAB move, but also a decent way to abuse exploit the semi-invulnerability glitch; if it experiences paralysis or confusion while flying, it'll get stuck in the air until it uses Fly again. Because it learns Swords Dance, it also means that an invulnerable Charizard is very capable of gimmicking its way to victory in niche formats that allow the semi-invulnerability moves, such as the in-game Yellow's version of Poke Cup.

While an insignificant change in the grand scheme of things, Yellow version was the first time Scyther actually got a STAB move: prior to this, Scyther only learned Normal-type attacks. Ergo, it was literally incapable of winning against Gengar, as Struggle is Normal-type in RBY. While Wing Attack does little to prevent such a humiliating defeat, it at least allows Scyther to deal damage to it.

However, as the following table implies, Pokemon Yellow doesn't just add moves to a Pokemon's movepool, it also shifts the levels around accordingly. This is mainly to balance in-game playthroughs more effectively. Because of this, there is some minor significance when applying this version differences to level-limited formats, such as the Stadium Cups. In fact, it's arguably optimal to use Pokemon Yellow if you aim to play through these without glitches.

HTML:
<table class="tg" style="margin-left:auto; margin-right:auto";>
<thead>
  <tr>
    <th class="tg-t2cw">Pokemon</th>
    <th class="tg-t2cw">Move(s)</th>
    <th class="tg-t2cw">Pokemon Red</th>
    <th class="tg-t2cw">Pokemon Yellow</th>
    <th class="tg-t2cw">Notes and Remarks</th>
  </tr>
</thead>
<tbody>
  <tr>
    <td class="tg-wa1i" rowspan="7">Butterfree</td>
    <td class="tg-baqh">Confusion</td>
    <td class="tg-nrix">L12<br></td>
    <td class="tg-nrix">L10</td>
    <td class="tg-cly1"></td>
  </tr>
  <tr>
    <td class="tg-baqh">PoisonPowder</td>
    <td class="tg-nrix">L15</td>
    <td class="tg-nrix">L13</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-baqh">Stun Spore</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-baqh">Sleep Powder</td>
    <td class="tg-nrix">L17</td>
    <td class="tg-nrix">L15</td>
    <td class="tg-0lax">Yellow is the only way to get an L15 Butterfree with Sleep Powder for Pika Cup.</td>
  </tr>
  <tr>
    <td class="tg-baqh">Supersonic</td>
    <td class="tg-nrix">L21</td>
    <td class="tg-nrix">L18</td>
    <td class="tg-0lax">Yellow legalized Supersonic Butterfree for Pika Cup.</td>
  </tr>
  <tr>
    <td class="tg-baqh">Whirlwind</td>
    <td class="tg-nrix">L26</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-baqh">Psybeam</td>
    <td class="tg-nrix">L32</td>
    <td class="tg-nrix">L34</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Pikachu</td>
    <td class="tg-nrix">Thunder Wave</td>
    <td class="tg-nrix">L9</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-nrix">L11</td>
    <td class="tg-0lax">Yellow is the only way to get an L15 Pikachu or Raichu with Quick Attack for Pika Cup.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Thunderbolt</td>
    <td class="tg-nrix">Not learned</td>
    <td class="tg-nrix">L26</td>
    <td class="tg-0lax">Pikachu is the only Pokemon in Generation I to learn Thunderbolt via [COLOR=rgb(222, 23, 131)][B]Level Up. [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]level-up.[/B][/COLOR]</td>
  </tr>
  <tr>
    <td class="tg-nrix">Thunder</td>
    <td class="tg-nrix">L43</td>
    <td class="tg-nrix">L41</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Swift</td>
    <td class="tg-nrix">L26</td>
    <td class="tg-nrix">Removed</td>
    <td class="tg-0lax">Pikachu has to learn Swift via TM in Yellow instead.</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Nidoran-F</td>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">L17</td>
    <td class="tg-0lax">[COLOR=rgb(222, 23, 131)][B]Tradebacking [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]Trading[/B][/COLOR] a Nidoran-F [COLOR=rgb(44, 130, 201)][B]back [/B][/COLOR]from Yellow can get Double Kick and Poison Sting onto a L15 Nidoran-F. This can be used to get an L16 Double Kick + Poison Sting Nidoqueen.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L21</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L29</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">You can technically use RGB to save a level to use Bite in Petit Cup, but it's outclassed by better options.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Fury Swipes</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-nrix">L38</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L43</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax">Yellow legalized Double Kick Nidoran-F for Pika Cup.</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Nidorina</td>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">L19</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L32</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Fury Swipes</td>
    <td class="tg-nrix">L41</td>
    <td class="tg-nrix">L46</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L50</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Nidoqueen</td>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">From Nidoran-F or Nidorina</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-cly1" rowspan="2">Only relevant for Trainers.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Nidoran-M</td>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14<br></td>
    <td class="tg-nrix">L17</td>
    <td class="tg-0lax">[COLOR=rgb(222, 23, 131)][B]Tradebacking [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]Trading[/B][/COLOR] a Nidoran-M [COLOR=rgb(44, 130, 201)][B]back [/B][/COLOR]from Yellow can get Double Kick and Poison Sting onto an L15 Nidoran-M. This can be used to get an L16 Double Kick + Poison Sting Nidoking.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Focus Energy</td>
    <td class="tg-nrix">L21</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Fury Attack</td>
    <td class="tg-nrix">L29</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">RGB can be used to learn Fury Attack a level earlier. Considering Focus Energy, this can be a gimmick set in Stadium, but Body Slam is normally better for consistent damage.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Horn Drill</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-nrix">L38</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L43</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Nidorino</td>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">L19</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Focus Energy</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Fury Attack</td>
    <td class="tg-nrix">L32</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Horn Drill</td>
    <td class="tg-nrix">L41</td>
    <td class="tg-nrix">L46</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L50</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Nidoking</td>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">From Nidoran-M or Nidorino</td>
    <td class="tg-nrix">L12</td>
    <td class="tg-0lax" rowspan="2">Only relevant for Trainers overall.<br><br>Interestingly, in both versions, only Nidoking learns Thrash at L23. This creates learnset incompatibilities with Focus Energy and Fury Attack. It also creates an incompatibility with Double Kick in Yellow-banned formats.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Poison Sting</td>
    <td class="tg-nrix">L14</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-amwm">Venonat</td>
    <td class="tg-baqh">PoisonPowder</td>
    <td class="tg-baqh">L24 ~ L22</td>
    <td class="tg-0lax"></td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Venomoth</td>
    <td class="tg-nrix">Leech Life</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Poison Powder</td>
    <td class="tg-nrix">L1 or L24</td>
    <td class="tg-nrix">L22</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-amwm">Primeape</td>
    <td class="tg-baqh">Rage</td>
    <td class="tg-baqh">N/A ~ L28</td>
    <td class="tg-0lax"></td>
    <td class="tg-0lax">Primeape already got Rage via TM20, making this a largely irrelevant change.</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Kadabra</td>
    <td class="tg-nrix">Confusion</td>
    <td class="tg-nrix">L1 or L16</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-cly1" rowspan="2">Entries removed to make room for Kinesis.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Disable</td>
    <td class="tg-nrix">L1 or L20</td>
    <td class="tg-nrix">L20</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="2">Alakazam</td>
    <td class="tg-nrix">Confusion</td>
    <td class="tg-nrix">L1 or L16</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Disable</td>
    <td class="tg-nrix">L1 or L20</td>
    <td class="tg-nrix">L20</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="3">Tangela</td>
    <td class="tg-nrix">Bind</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L24</td>
    <td class="tg-cly1" rowspan="3">Moves were shifted around to make room for Vine Whip.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Absorb</td>
    <td class="tg-nrix">L29</td>
    <td class="tg-nrix">L27</td>
  </tr>
  <tr>
    <td class="tg-nrix">Growth</td>
    <td class="tg-nrix">L49</td>
    <td class="tg-nrix">L48</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Gyarados</td>
    <td class="tg-nrix">Tackle</td>
    <td class="tg-nrix">From Magikarp</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-cly1" rowspan="5">Rebalanced for the fact [COLOR=rgb(44, 130, 201)][B]that [/B][/COLOR]it's now catchable. This could also be considered a Trainer nerf. However, the Pika Cup [COLOR=rgb(222, 23, 131)][B]Rental [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]rental[/B][/COLOR] Gyarados actually uses the removed attacks at L15, making it an illegal rental.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-nrix">Dragon Rage</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-nrix">Leer</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-nrix">Hydro Pump</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">Removed</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="5">Eevee</td>
    <td class="tg-nrix">Sand-Attack</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax">Yellow can be used to get Quick Attack Eevee prior to L25 for Petit Cup, which is actually really important for its moveset.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L31</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-0lax">This legalizes Tail Whip for use in Petit Cup.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L37</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">This legalizes Bite Eevee for use in Petit Cup on L30 builds, but Body Slam is normally more effective.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Take Down</td>
    <td class="tg-nrix">L45</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="9">Vaporeon</td>
    <td class="tg-nrix">Sand-Attack</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Water Gun</td>
    <td class="tg-nrix">L31</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-0lax">Given Water Gun is a TM, this doesn't change anything, unlike Tail Whip and Bite.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L37</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-0lax">This legalizes Tail Whip Vaporeon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L40</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">This legalizes Bite Vaporeon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Acid Armor</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-nrix">L47</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Haze</td>
    <td class="tg-nrix">L44</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-0lax" rowspan="2">[COLOR=rgb(222, 23, 131)][B]Due to the fact [/B][/COLOR][COLOR=rgb(44, 130, 201)][B]Because[/B][/COLOR] a Pokemon can only learn one move via level-up at a time, Haze is prioritized [COLOR=rgb(222, 23, 131)][B]instead.[/B][/COLOR][COLOR=rgb(44, 130, 201)][B] over Mist.[/B][/COLOR]<br><br>The only way to learn Mist in Yellow is by leveling up Vaporeon in the Pokemon Day Care near Cerulean City.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Mist</td>
    <td class="tg-nrix">L48</td>
    <td class="tg-nrix">L42</td>
  </tr>
  <tr>
    <td class="tg-nrix">Hydro Pump</td>
    <td class="tg-nrix">L54</td>
    <td class="tg-nrix">L52</td>
    <td class="tg-0lax">Hydro Pump can be used two levels early in Poke Cup.</td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="9">Jolteon</td>
    <td class="tg-nrix">Sand-Attack</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Thundershock</td>
    <td class="tg-nrix">L31</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-0lax">This legalizes Thundershock Jolteon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L37</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-0lax">This legalizes Tail Whip Jolteon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Thunder Wave</td>
    <td class="tg-nrix">L40</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Double Kick</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-nrix">L40</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Pin Missile</td>
    <td class="tg-nrix">L44</td>
    <td class="tg-nrix">L47</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Agility</td>
    <td class="tg-nrix">L48</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Thunder</td>
    <td class="tg-nrix">L54</td>
    <td class="tg-nrix">L52</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-wa1i" rowspan="9">Flareon</td>
    <td class="tg-nrix">Sand-Attack</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-nrix">L8</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Quick Attack</td>
    <td class="tg-nrix">L27</td>
    <td class="tg-nrix">L23</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Ember</td>
    <td class="tg-nrix">L31</td>
    <td class="tg-nrix">L16</td>
    <td class="tg-0lax">This legalizes Ember Flareon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Tail Whip</td>
    <td class="tg-nrix">L37</td>
    <td class="tg-nrix">L1</td>
    <td class="tg-0lax">This legalizes Tail Whip Flareon for use [COLOR=rgb(222, 23, 131)][B]for use[/B][/COLOR] in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Bite</td>
    <td class="tg-nrix">L40</td>
    <td class="tg-nrix">L30</td>
    <td class="tg-0lax">This legalizes Bite Flareon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Leer</td>
    <td class="tg-nrix">L42</td>
    <td class="tg-nrix">L47</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Fire Spin</td>
    <td class="tg-nrix">L44</td>
    <td class="tg-nrix">L36</td>
    <td class="tg-0lax"></td>
  </tr>
  <tr>
    <td class="tg-nrix">Flamethrower</td>
    <td class="tg-nrix">L52</td>
    <td class="tg-nrix">L54</td>
    <td class="tg-0lax">Flamethrower can be used two levels early in Poke Cup.</td>
  </tr>
  <tr>
    <td class="tg-nrix">Rage</td>
    <td class="tg-nrix">Not learned</td>
    <td class="tg-nrix">L28</td>
    <td class="tg-0lax">Rage was already learned via TM20, so it doesn't really matter.</td>
  </tr>
</tbody>
</table>
The Nidoran lines famously got Double Kick at level 12 via Yellow version, which is partly what made the early-game bearable when being faced down by facing down Brock. This also gives them some minor extra coverage in Pika Cup, although you're probably better off using stronger moves like Earthquake, Thunderbolt, and Blizzard. It's technically possible to use Pokemon Red to learn Poison Sting prior to the threshold of level 15, though it's a largely useless move.

Most Eeveelutions got some love here; Eevee gets access to Quick Attack prior to level 25, making it a bit more viable for a Petit Cup playthrough in Stadium considering its awful base movepool. Vaporeon and Flareon also got access to their strongest moves at level 52&mdash;Hydro (removed spaces around &mdash;) Pump and Flamethrower, respectively&mdash;making (&mdash; spacing again) them slightly easier to fit on balanced-level (added hyphen) teams in Poke Cup.

Events
Stadium Gift Pokemon

The first Japanese Stadium title&mdash;often (&mdash; spacing) colloquially referred to as "Stadium Zero"&mdash;allows (&mdash; spacing) Pikachu to be taught Surf if one clears the level 30 cup based on Nintendo Cup '98. In the second Stadium title that title, which was released internationally, if one clears Prime Cup Master Ball Round 2 with a Pikachu in their party without saving, so long as it is picked in the final battle, Pikachu can also be taught Surf. This is the most accessible method of obtaining a Pikachu with Surf, which is crucial to its success competitively, as well as accessing the Pikachu's Beach minigame in Pokemon Yellow.

Additionally, if one gets all 151 Pokemon in the Hall of Fame in Pokemon Stadium, they can receive a level 15 Amnesia Psyduck, which single-handedly turns its evolution from a thoroughly mediocre Pokemon into a significant threat, giving it a much-needed identity as a special sweeper. In fact, Amnesia Golduck is so strong, it was banned from RBY NU in 2020!

Japan-exclusive Event Pokemon

In Japan, a select few Pokemon were distributed that had otherwise unobtainable moves. While generally unimpressive, these would pave the way for more famous event distributions, such as the notorious New York Pokemon Center events in GSC. Because the RBY events were only available in Japan, these Pokemon cannot be used in international games, as trading them across regions causes save data corruption. These events are considered to be among the rarest of all time, normally being distributed to a pool of 20 players each. Due to the nature of these events, they are also Japan-exclusive legality, (removed checker comment) akin to Japanese Blue's DVs.

Pikachu first got Surf via event on June 12th, 1997 (removed comma) via the "Pokemon 2 Idea Contest" in Shogakukan's CoroCoro magazine. For this event, readers submitted Pokemon ideas for the then-upcoming Pokemon Gold and Silver titles. Tsunekazu Ishihara and Satoshi Tajiri selected their top 20 contestants, who sent in their cartridges to receive the Pikachu. Therefore, this Pikachu is extremely rare. This distribution would be repeated twice as a kind of raffle in later issues, each with 20 winners. However, two similar distributions were also performed for a Fly Pikachu, which is unobtainable in the West. Both Pikachu were distributed at level 5, though a Surf Pikachu can theoretically be obtained at level 3 through Stadium's Move Tutor.

Shogakukan also distributed a special Dragon Rage Magikarp at level 15 via the "Tamamushi University Hyper-Test" event in July 1998, wherein players submitted a series of answers to six tests in the CoroCoro magazine issues. The top 1,000 "students" of these Pokemon exams were entered into a raffle to be among 20 "professors" to obtain the legendary Magikarp. The rest (jncluding the raffle winners) obtained a special medal and promotional Pokemon card, both of which are considered to be extremely rare collector's items today, commanding gigantic prices online.

The final round of events with unique moves were the Pokemon Fan Club Chairman's Fearow and Rapidash, which were distributed with Pay Day in the August 1998 issue of CoroCoro magazine. They were at levels 25 and 40, respectively, and were otherwise normal Pokemon. This distribution was part of a greater "Pokemon Stamp" campaign (removed comma) where readers could obtain various collectible stamps, which featured the Red and Blue art sets on them. These weren't "real" postage stamps, though, just collectible ones. These stamps would continue being produced well into the 2000s and beyond, featuring later generation art sets.

Mew
Mew needs no introduction, being one of the most widely distributed Pokemon of its era and having a very heavy influence on RBY Ubers with its Swords Dance sets. It was most commonly distributed with a 5/10/1/12/5 DV spread, although exceptions exist, and the 2016 Virtual Console versions of the game had real-life events where players could get a Mew with 15 DVs in every stat. Most of the time, Mew was distributed at level 5. Mew was given out in many, many events worldwide, often in tournaments and other large gatherings. There have been some "groups" that have been identified, such as the YOSHIDA Mew, Nintendo character OTs, and more, giving each Mew a degree of intrigue.


in case this is hard to see, the nickname column of the first table has a change

i capitalized "magazine" for corocoro specifically 2x in the first [ code ] table, because everything else in the line was capitalized

i changed something for the following pokemon in the ending big table: pikachu (thunderbolt), nidoran-f (poison sting), nidoran-m (poison sting), gyarados (tackle), vaporeon (haze), flareon (tail whip). these changes are visible within the table text.

i'm not sure venonat and primeape's levels in ending big table are formatted right

as always lmk if any questions or if i messed smth up!
2/2
Corrin1.gif
 

Ryota Mitarai

Shrektimus Prime
is a Tiering Contributoris a Contributor to Smogonis a Top Smogon Media Contributor
HTMLing

some of the sprites seem to have disappeared from the OP (judging by the tons of attached images), may wanna fix this if you want them in the code.
 

Ryota Mitarai

Shrektimus Prime
is a Tiering Contributoris a Contributor to Smogonis a Top Smogon Media Contributor
HTML:
[title]
Legality Changes by Yellow and Japanese Blue

[head]
<meta name="description" content="A deep look into the legality changes Japanese Blue and Yellow brought, such as access to better DVs and movepool changes." />

<link rel="stylesheet" href="./stylesheet.css" />


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[page]
<div class="author">By <a href="/forums/members/may.236353/" target="_blank">May</a>. Art by <a href="//twitter.com/theEyeDonutz" target="_blank">EyeDonutz</a>.</div>

<div class="align-center">
    <img src="/rb/articles/yellow_japanese_blue_legality_changes_art.png" alt="Legality Changes by Japanese Blue and Yellow art" />
</div>

<h2>Introduction</h2>

<p>Every Pok&eacute;mon generation introduces changes to legality halfway through, be it through events, updates to software, third versions, or something else. The first generation is no exception to this, featuring many minor changes across its second wave of releases. While Pok&eacute;mon Red and Green were the first games released in Japan, Blue was later released through a CoroCoro magazine mail order promotion in 1997. It later got re-released for retail alongside Pok&eacute;mon Yellow, arguably making them sequel titles.</p>

<p>This guide will go over changes that made a significant difference to the Pok&eacute;mon themselves, such as access to better DVs or movepool changes.</p>

<hr />

<div id="toc">
    <h3>Table of Contents</h3>
    <ul class="links">
        <li class="link"><a href="#japanese-blue">Japanese Blue Version</a></li>
        <li>
            <ul>
                <li class="link"><a href="#in-game-trades">In-Game Trades</a></li>
            </ul>
        </li>
        <li>
            <ul>
                <li class="link"><a href="#wild-encounters">Wild Encounters</a></li>
            </ul>
        </li>
        <li class="link"><a href="#yellow">Yellow Version</a></li>
        <li class="link"><a href="#events">Events</a></li>
        <li>
            <ul>
                <li><a href="#stadium-gift-pokemon">Stadium Gift Pok&eacute;mon</a></li>
                <li><a href="#japan-exclusives">Japan-exclusive Event Pok&eacute;mon</a></li>
                <li><a href="#mew">Mew</a></li>
            </ul>
        </li>
    </ul>
</div>

<h2 id="japanese-blue">Japanese Blue Version</h2>

<p>The Japanese version of Pok&eacute;mon Blue is actually quite different to the Pok&eacute;mon Blue that we got in the West; the version we got had legality based on Pok&eacute;mon Green while still using a translated script from Japanese Blue, plus the updated sprites. This is why the "Raichu evolved" error got left in Cinnabar Lab, which led to various playground myths back in the '90s that turned out to be partly right with the revelation of Gorochu's removal during the original game's development. It's also the reason MissingNo. gets a glitched Pok&eacute;dex entry in the international versions of Red and Blue, as it wasn't translated and thus calls invalid characters. Overall, our Blue version was effectively a mishmash of Green and Japanese Blue.</p>

<p>So what was in this Japanese Blue version, then? Let's go over that first.</p>

<p>Japanese Blue introduced the usual changes you would expect from a Pok&eacute;mon version of this era: different wild encounter tables, Game Corner prizes, Celadon Mart items, and in-game trades. Because of this, though, the game introduces some otherwise unobtainable Pok&eacute;mon and thus legality that is Japan-exclusive.</p>

<h3 id="in-game-trades">In-Game Trades</h3>

<p>The main change Japanese Blue brings is its in-game trades, which are eligible for perfect DVs by virtue of not being tied to encounter rates. Because Tauros is a regular encounter in the other games, Japanese Blue is the only game capable of providing a perfect one. It also uniquely provides Pok&eacute;mon evolving by trade, like Graveler and Haunter.</p>

<table class="rby-table" style="max-width: 650px; text-align: center;">
    <tr>
        <th>Location</th>
        <th>Pok&eacute;mon to Trade</th>
        <th>Pok&eacute;mon Received</th>
        <th>Nickname (Japanese)</th>
    </tr>
    <tr>
        <td>Route 2</td>
        <td>Jigglypuff</td>
        <td>Mr. Mime</td>
        <td><span lang="ja-jp">まさる</span> (Masaru)</td>
    </tr>
    <tr>
        <td>Underground Path (Route 5)</td>
        <td>Rattata</td>
        <td>Poliwag</td>
        <td><span lang="ja-jp">ロモたん</span> (Romo-tan)</td>
    </tr>
    <tr>
        <td>Route 11</td>
        <td>Rhydon</td>
        <td>Kangaskhan</td>
        <td><span lang="ja-jp">ロダン</span> (Rodan)</td>
    </tr>
    <tr>
        <td>Route 18</td>
        <td>Persian</td>
        <td>Tauros</td>
        <td><span lang="ja-jp">ぎゅうた</span> (Gyuuta)</td>
    </tr>
    <tr>
        <td>Cerulean City</td>
        <td>Machoke</td>
        <td>Haunter ~ Gengar*</td>
        <td><span lang="ja-jp">ゴーすけ</span> (Goosuke)</td>
    </tr>
    <tr>
        <td>Vermillion City</td>
        <td>Pidgey</td>
        <td>Farfetch'd</td>
        <td><span lang="ja-jp">アッカ</span> (Akka)</td>
    </tr>
    <tr>
        <td>Cinnabar Lab</td>
        <td>Kadabra</td>
        <td>Graveler ~ Golem*</td>
        <td><span lang="ja-jp">さぶろう</span> (Saborou Saburou)</td>
    </tr>
    <tr>
        <td>Cinnabar Lab</td>
        <td>Seel</td>
        <td>Slowpoke</td>
        <td><span lang="ja-jp">オスカル</span> (Osukaru)</td>
    </tr>
    <tr>
        <td>Cinnabar Lab</td>
        <td>Growlithe</td>
        <td>Krabby</td>
        <td><span lang="ja-jp">どうらく</span> (Douraku)</td>
    </tr>
    <tr>
        <td>Unused Trade**</td>
        <td>Butterfree</td>
        <td>Beedrill</td>
        <td><span lang="ja-jp">チクチク</span> (Chikuchiku)</td>
    </tr>
</table>

<p><em>*The evolution of these Pok&eacute;mon cannot be cancelled. Both Pok&eacute;dex entries are filled.</em></p>

<p><em>**This trade can be obtained through glitches, though it is obviously illegitimate.</em></p>

<div class="center">
    <img src="//play.pokemonshowdown.com/sprites/gen1rb/golem.png" alt="Golem" />
    <img src="//play.pokemonshowdown.com/sprites/gen1rb/kangaskhan.png" alt="Kangaskhan" />
    <img src="//play.pokemonshowdown.com/sprites/gen1rb/muk.png" alt="Muk" />
</div>

<p>These trades also have an effect on the minimum levels you can obtain some Pok&eacute;mon at. This makes three Pok&eacute;mon eligible for the official Pika Cup format through some fairly complex in-game trading. In fact, because of another localization error in Pok&eacute;mon Stadium, each of these Pok&eacute;mon can be seen in Round 2 despite being unobtainable internationally, which can be fairly confusing for those unaware. Golem and Kangaskhan are notably quite powerful in the format, changing the metagame a good bit.</p>

<ul>
    <li>An eligible Golem can be obtained through trading a level 16 Kadabra at Cinnabar Lab.
        <ul>
            <li>This means its minimum level is 16, which makes the Golem in Stadium's Round 2 completely illegal!</li>
        </ul>
    </li>
    <li>An eligible Kangaskhan can be obtained by using Surf on Route 6 to catch a level 15 Golduck (5% encounter) and trading it with Yellow. Once in Yellow, trade for the Rhydon at Cinnabar Lab. After that, trade this Rhydon back to Japanese Blue and trade for the Kangaskhan at Route 11. This nets you a level 15 Kangaskhan.</li>
    <li>An eligible Muk can be obtained by doing the Kangaskhan method above and subsequently trading it for the Muk in Pok&eacute;mon Yellow's Cinnabar Lab.</li>
</ul>

<h3 id="wild-encounters">Wild Encounters</h3>

<p>As is tradition with each version, various wild encounters were changed, including some changes that are quite interesting. Because Lickitung and Jynx are no longer obtainable via trades in Japanese Blue, they're instead distributed to the Safari Zone and Seafoam Islands, respectively.</p>

<table class="rby-table" style="max-width: 550px; text-align: center;">
    <tr>
        <th>Pok&eacute;mon</th>
        <th>Location</th>
        <th>Level Range</th>
        <th>Encounter Percentage</th>
    </tr>
    <tr>
        <td>Ditto</td>
        <td>Rock Tunnel B1F</td>
        <td>Level 18</td>
        <td>10%</td>
    </tr>
    <tr>
        <td>Lickitung</td>
        <td>Safari Zone East</td>
        <td>Level 25</td>
        <td>4%</td>
    </tr>
    <tr>
        <td>Lickitung</td>
        <td>Safari Zone West</td>
        <td>Level 28</td>
        <td>1%</td>
    </tr>
    <tr>
        <td>Jynx</td>
        <td>Seafoam Islands B2F</td>
        <td>Level 37</td>
        <td>1%</td>
    </tr>
    <tr>
        <td>Jynx</td>
        <td>Seafoam Islands B4F</td>
        <td>Level 39</td>
        <td>4%</td>
    </tr>
    <tr>
        <td>Rapidash</td>
        <td>Cerulean Cave 1F</td>
        <td>Level 49</td>
        <td>10%</td>
    </tr>
    <tr>
        <td>Raticate</td>
        <td>Cerulean Cave B1F</td>
        <td>Level 52</td>
        <td>10%</td>
    </tr>
    <tr>
        <td>Clefairy</td>
        <td>Cerulean Cave B2F</td>
        <td>Level 64</td>
        <td>10%</td>
    </tr>
</table>

<div class="center">
    <img src="//play.pokemonshowdown.com/sprites/gen1rb/lickitung.png" alt="Lickitung" />
    <img src="//play.pokemonshowdown.com/sprites/gen1rb/jynx.png" alt="Jynx" />
</div>

<p>Because of these changes, Japanese Blue makes it possible to nickname Jynx without resetting for the same Trainer ID, which has an astronomically low chance of succeeding. Japanese Blue was also the first time this applied to Lickitung before it was later put in Yellow's Cerulean Cave. Because both Lickitung and Jynx are wild encounters, however, it is impossible for them to get perfect DVs, and they're restricted to spreads that either reduce their Speed or reduce their Special. It's also impossible for a wild Lickitung to learn Wrap due to being obtained at quite a high level, causing it to learn Defense Curl over it.</p>

<p><a href="#toc">Back to table of contents!</a></p>

<hr />

<h2 id="yellow">Yellow Version</h2>

<p>Pok&eacute;mon Yellow brought far more significant changes overall, adding entirely new moves to Pok&eacute;mon's learnsets alongside the usual changes each version of RBY experiences. Its encounter tables also naturally brought forth entire new changes to DV legality, though listing everything is nigh-impossible.</p>

<p>This table goes over the moves added to each Pok&eacute;mon's learnset:</p>

<table class="rby-table" style="max-width: 600px;">
    <tr>
        <th>Pok&eacute;mon</th>
        <th>Added Move(s)</th>
        <th>Method</th>
    </tr>
    <tr>
        <td>Charizard</td>
        <td>Fly</td>
        <td>HM02</td>
    </tr>
    <tr>
        <td rowspan="2">Butterfree</td>
        <td>Gust</td>
        <td>L28</td>
    </tr>
    <tr>
        <td>Flash</td>
        <td>HM05</td>
    </tr>
    <tr>
        <td>Fearow</td>
        <td>Pay Day</td>
        <td>Pok&eacute;mon Stamp Event (August 1998)</td>
    </tr>
    <tr>
        <td rowspan="5">Pikachu</td>
        <td>Tail Whip</td>
        <td>L6</td>
    </tr>
    <tr>
        <td>Slam</td>
        <td>L20</td>
    </tr>
    <tr>
        <td>Light Screen</td>
        <td>L50</td>
    </tr>
    <tr>
        <td>Fly</td>
        <td>CoroCoro Magazine Event (c.1997)</td>
    </tr>
    <tr>
        <td>Surf</td>
        <td>CoroCoro Magazine Event (c.1997), Pok&eacute;mon Stadium Move Tutor</td>
    </tr>
    <tr>
        <td rowspan="5">Raichu</td>
        <td>Tail Whip</td>
        <td rowspan="5">Evolve Pikachu</td>
    </tr>
    <tr>
        <td>Slam</td>
    </tr>
    <tr>
        <td>Light Screen</td>
    </tr>
    <tr>
        <td>Fly</td>
    </tr>
    <tr>
        <td>Surf</td>
    </tr>
    <tr>
        <td rowspan="3">Venonat</td>
        <td>Supersonic</td>
        <td>L11</td>
    </tr>
    <tr>
        <td>Confusion</td>
        <td>L19</td>
    </tr>
    <tr>
        <td>Flash</td>
        <td>HM05</td>
    </tr>
    <tr>
        <td rowspan="3">Venomoth</td>
        <td>Supersonic</td>
        <td>L1, Evolve Venonat</td>
    </tr>
    <tr>
        <td>Confusion</td>
        <td>L1, Evolve Venonat</td>
    </tr>
    <tr>
        <td>Flash</td>
        <td>HM05</td>
    </tr>
    <tr>
        <td>Diglett</td>
        <td>Cut</td>
        <td>HM01</td>
    </tr>
    <tr>
        <td>Dugtrio</td>
        <td>Cut</td>
        <td>HM01</td>
    </tr>
    <tr>
        <td>Psyduck</td>
        <td>Amnesia</td>
        <td>Pok&eacute;mon Stadium</td>
    </tr>
    <tr>
        <td>Golduck</td>
        <td>Amnesia</td>
        <td>Evolve an Amnesia Psyduck</td>
    </tr>
    <tr>
        <td rowspan="2">Mankey</td>
        <td>Low Kick</td>
        <td>L9</td>
    </tr>
    <tr>
        <td>Screech</td>
        <td>L45</td>
    </tr>
    <tr>
        <td rowspan="2">Primeape</td>
        <td>Low Kick</td>
        <td>L1, L9, Evolve Mankey</td>
    </tr>
    <tr>
        <td>Screech</td>
        <td>L45</td>
    </tr>
    <tr>
        <td>Kadabra</td>
        <td>Kinesis</td>
        <td>L1</td>
    </tr>
    <tr>
        <td>Alakazam</td>
        <td>Kinesis</td>
        <td>L1, Evolve Kadabra</td>
    </tr>
    <tr>
        <td>Rapidash</td>
        <td>Pay Day</td>
        <td>Pok&eacute;mon Stamp Event (August 1998)</td>
    </tr>
    <tr>
        <td rowspan="2">Cubone</td>
        <td>Tail Whip</td>
        <td>L13</td>
    </tr>
    <tr>
        <td>Headbutt</td>
        <td>L18</td>
    </tr>
    <tr>
        <td rowspan="2">Marowak</td>
        <td>Tail Whip</td>
        <td>L1, L13</td>
    </tr>
    <tr>
        <td>Headbutt</td>
        <td>L18</td>
    </tr>
    <tr>
        <td>Chansey</td>
        <td>Tail Whip</td>
        <td>L1</td>
    </tr>
    <tr>
        <td>Tangela</td>
        <td>Vine Whip</td>
        <td>L29</td>
    </tr>
    <tr>
        <td>Scyther</td>
        <td>Wing Attack</td>
        <td>L50</td>
    </tr>
    <tr>
        <td>Pinsir</td>
        <td>Bind</td>
        <td>L21</td>
    </tr>
    <tr>
        <td>Magikarp</td>
        <td>Dragon Rage</td>
        <td>Tamamushi University Event (July 1998)</td>
    </tr>
    <tr>
        <td rowspan="2">Eevee</td>
        <td>Growl</td>
        <td>L16</td>
    </tr>
    <tr>
        <td>Focus Energy</td>
        <td>L36</td>
    </tr>
    <tr>
        <td rowspan="3">Vaporeon</td>
        <td>Growl</td>
        <td>Evolve Eevee</td>
    </tr>
    <tr>
        <td>Focus Energy</td>
        <td>Evolve Eevee</td>
    </tr>
    <tr>
        <td>Aurora Beam</td>
        <td>L36</td>
    </tr>
    <tr>
        <td rowspan="2">Jolteon</td>
        <td>Growl</td>
        <td>Evolve Eevee</td>
    </tr>
    <tr>
        <td>Focus Energy</td>
        <td>Evolve Eevee</td>
    </tr>
    <tr>
        <td rowspan="3">Flareon</td>
        <td>Growl</td>
        <td>Evolve Eevee</td>
    </tr>
    <tr>
        <td>Focus Energy</td>
        <td>Evolve Eevee</td>
    </tr>
    <tr>
        <td>Smog</td>
        <td>L42</td>
    </tr>
</table>

<p>The most notable change Yellow brought to the game was actually having a Pok&eacute;mon that learns Kinesis. Prior to Yellow's release, Kadabra couldn't learn Kinesis, causing the move to become unused outside of glitches or Metronome. Once Yellow was released, Kadabra became able to use Kinesis at L1, meaning that wild Kadabra come with the move. However, this also means that Kinesis Kadabra from Yellow cannot have perfect DVs; to get perfect DVs, it must be obtained as a Game Corner prize as an Abra.</p>

<p>Pinsir was blessed with the move Bind, allowing it to be less of a momentum sink. Bind can act as a pseudo-U-turn in RBY, preventing Pok&eacute;mon from moving as the user switches. It also allows Pinsir to chip Pok&eacute;mon into Swords Dance + Hyper Beam range, which makes it a terror against paralyzed teams. Without this move, Pinsir is often forced out by Gengar and Haunter while letting them get off Hypnosis, as it only learns Normal- and Fighting-type moves and only has Seismic Toss to actually damage them. With Bind, it's possible to pivot out into an outright counter.</p>

<p>While only relevant in Stadium, Jolteon got bestowed with Focus Energy, a move that quarters the user's critical hit rate in RBY. In Stadium, however, it raises it by about 66%, giving Jolteon a savage critical hit rate of 71%. This makes it into a deadly sweeper in formats using Stadium mechanics, such as Stadium OU or Pok&eacute; Cup. However, it also comes at the opportunity cost of moves like Rest or Pin Missile, as the combination of Thunder Wave + Thunderbolt + Double Kick is almost undroppable.</p>

<p>Charizard also learns Fly, which not only gives it a Flying-type STAB move, but also a decent way to exploit the semi-invulnerability glitch; if it experiences paralysis or confusion while flying, it'll get stuck in the air until it uses Fly again. Because it learns Swords Dance, an invulnerable Charizard is very capable of gimmicking its way to victory in niche formats that allow the semi-invulnerability moves, such as the in-game Yellow's version of Pok&eacute; Cup.</p>

<p>While an insignificant change in the grand scheme of things, Yellow version was the first time Scyther actually got a STAB move: prior to this, Scyther only learned Normal-type attacks. Ergo, it was literally incapable of winning against Gengar, as Struggle is Normal-type in RBY. While Wing Attack does little to prevent such a humiliating defeat, it at least allows Scyther to deal damage to it.</p>

<p>However, as the following table implies, Pok&eacute;mon Yellow doesn't just add moves to a Pok&eacute;mon's movepool, it also shifts the levels around accordingly. This is mainly to balance in-game playthroughs more effectively. Because of this, there is some minor significance when applying version differences to level-limited formats, such as the Stadium Cups. In fact, it's arguably optimal to use Pok&eacute;mon Yellow if you aim to play through these without glitches.</p>

<table class="rby-table">
    <tr>
        <th>Pok&eacute;mon</th>
        <th>Move(s)</th>
        <th>Pok&eacute;mon Red</th>
        <th>Pok&eacute;mon Yellow</th>
        <th>Notes and Remarks</th>
    </tr>
    <tr>
        <td rowspan="7">Butterfree</td>
        <td>Confusion</td>
        <td>L12</td>
        <td>L10</td>
        <td></td>
    </tr>
    <tr>
        <td>PoisonPowder</td>
        <td>L15</td>
        <td>L13</td>
        <td></td>
    </tr>
    <tr>
        <td>Stun Spore</td>
        <td>L16</td>
        <td>L14</td>
        <td></td>
    </tr>
    <tr>
        <td>Sleep Powder</td>
        <td>L17</td>
        <td>L15</td>
        <td>Yellow is the only way to get an L15 Butterfree with Sleep Powder for Pika Cup.</td>
    </tr>
    <tr>
        <td>Supersonic</td>
        <td>L21</td>
        <td>L18</td>
        <td>Yellow legalized Supersonic Butterfree for Pika Cup.</td>
    </tr>
    <tr>
        <td>Whirlwind</td>
        <td>L26</td>
        <td>L23</td>
        <td></td>
    </tr>
    <tr>
        <td>Psybeam</td>
        <td>L32</td>
        <td>L34</td>
        <td></td>
    </tr>
    <tr>
        <td rowspan="5">Pikachu</td>
        <td>Thunder Wave</td>
        <td>L9</td>
        <td>L8</td>
        <td></td>
    </tr>
    <tr>
        <td>Quick Attack</td>
        <td>L16</td>
        <td>L11</td>
        <td>Yellow is the only way to get an L15 Pikachu or Raichu with Quick Attack for Pika Cup.</td>
    </tr>
    <tr>
        <td>Thunderbolt</td>
        <td>Not learned</td>
        <td>L26</td>
        <td>Pikachu is the only Pok&eacute;mon in Generation I to learn Thunderbolt via level-up.</td>
    </tr>
    <tr>
        <td>Thunder</td>
        <td>L43</td>
        <td>L41</td>
        <td></td>
    </tr>
    <tr>
        <td>Swift</td>
        <td>L26</td>
        <td>Removed</td>
        <td>Pikachu has to learn Swift via TM in Yellow instead.</td>
    </tr>
    <tr>
        <td rowspan="5">Nidoran-F</td>
        <td>Poison Sting</td>
        <td>L14</td>
        <td>L17</td>
        <td>Trading a Nidoran-F back from Yellow can get Double Kick and Poison Sting onto a L15 Nidoran-F. This can be used to get an L16 Double Kick + Poison Sting Nidoqueen.</td>
    </tr>
    <tr>
        <td>Tail Whip</td>
        <td>L21</td>
        <td>L23</td>
        <td></td>
    </tr>
    <tr>
        <td>Bite</td>
        <td>L29</td>
        <td>L30</td>
        <td>You can technically use RGB to save a level to use Bite in Petit Cup, but it's outclassed by better options.</td>
    </tr>
    <tr>
        <td>Fury Swipes</td>
        <td>L36</td>
        <td>L38</td>
        <td></td>
    </tr>
    <tr>
        <td>Double Kick</td>
        <td>L43</td>
        <td>L12</td>
        <td>Yellow legalized Double Kick Nidoran-F for Pika Cup.</td>
    </tr>
    <tr>
        <td rowspan="5">Nidorina</td>
        <td>Poison Sting</td>
        <td>L14</td>
        <td>L19</td>
        <td></td>
    </tr>
    <tr>
        <td>Tail Whip</td>
        <td>L23</td>
        <td>L27</td>
        <td></td>
    </tr>
    <tr>
        <td>Bite</td>
        <td>L32</td>
        <td>L36</td>
        <td></td>
    </tr>
    <tr>
        <td>Fury Swipes</td>
        <td>L41</td>
        <td>L46</td>
        <td></td>
    </tr>
    <tr>
        <td>Double Kick</td>
        <td>L50</td>
        <td>L12</td>
        <td></td>
    </tr>
    <tr>
        <td rowspan="2">Nidoqueen</td>
        <td>Double Kick</td>
        <td>From Nidoran-F or Nidorina</td>
        <td>L12</td>
        <td rowspan="2">Only relevant for Trainers.</td>
    </tr>
    <tr>
        <td>Poison Sting</td>
        <td>L14</td>
        <td>Removed</td>
    </tr>
    <tr>
        <td rowspan="5">Nidoran-M</td>
        <td>Poison Sting</td>
        <td>L14</td>
        <td>L17</td>
        <td>Trading a Nidoran-M back from Yellow can get Double Kick and Poison Sting onto an L15 Nidoran-M. This can be used to get an L16 Double Kick + Poison Sting Nidoking.</td>
    </tr>
    <tr>
        <td>Focus Energy</td>
        <td>L21</td>
        <td>L23</td>
        <td></td>
    </tr>
    <tr>
        <td>Fury Attack</td>
        <td>L29</td>
        <td>L30</td>
        <td>RGB can be used to learn Fury Attack a level earlier. Considering Focus Energy, this can be a gimmick set in Stadium, but Body Slam is normally better for consistent damage.</td>
    </tr>
    <tr>
        <td>Horn Drill</td>
        <td>L36</td>
        <td>L38</td>
        <td></td>
    </tr>
    <tr>
        <td>Double Kick</td>
        <td>L43</td>
        <td>L12</td>
        <td></td>
    </tr>
    <tr>
        <td rowspan="5">Nidorino</td>
        <td>Poison Sting</td>
        <td>L14</td>
        <td>L19</td>
        <td></td>
    </tr>
    <tr>
        <td>Focus Energy</td>
        <td>L23</td>
        <td>L27</td>
        <td></td>
    </tr>
    <tr>
        <td>Fury Attack</td>
        <td>L32</td>
        <td>L36</td>
        <td></td>
    </tr>
    <tr>
        <td>Horn Drill</td>
        <td>L41</td>
        <td>L46</td>
        <td></td>
    </tr>
    <tr>
        <td>Double Kick</td>
        <td>L50</td>
        <td>L12</td>
        <td></td>
    </tr>
    <tr>
        <td rowspan="2">Nidoking</td>
        <td>Double Kick</td>
        <td>From Nidoran-M or Nidorino</td>
        <td>L12</td>
        <td rowspan="2">Only relevant for Trainers overall. Interestingly, in both versions, only Nidoking learns Thrash at L23. This creates learnset incompatibilities with Focus Energy and Fury Attack. It also creates an incompatibility with Double Kick in Yellow-banned formats.</td>
    </tr>
    <tr>
        <td>Poison Sting</td>
        <td>L14</td>
        <td>Removed</td>
    </tr>
    <tr>
        <td>Venonat</td>
        <td>PoisonPowder</td>
        <td>L24 ~ L22</td>
        <td></td>
        <td></td>
    </tr>
    <tr>
        <td rowspan="2">Venomoth</td>
        <td>Leech Life</td>
        <td>L1</td>
        <td>Removed</td>
        <td></td>
    </tr>
    <tr>
        <td>Poison Powder</td>
        <td>L1 or L24</td>
        <td>L22</td>
        <td></td>
    </tr>
    <tr>
        <td>Primeape</td>
        <td>Rage</td>
        <td>N/A ~ L28</td>
        <td></td>
        <td>Primeape already got Rage via TM20, making this a largely irrelevant change.</td>
    </tr>
    <tr>
        <td rowspan="2">Kadabra</td>
        <td>Confusion</td>
        <td>L1 or L16</td>
        <td>L16</td>
        <td rowspan="2">Entries removed to make room for Kinesis.</td>
    </tr>
    <tr>
        <td>Disable</td>
        <td>L1 or L20</td>
        <td>L20</td>
    </tr>
    <tr>
        <td rowspan="2">Alakazam</td>
        <td>Confusion</td>
        <td>L1 or L16</td>
        <td>L16</td>
        <td></td>
    </tr>
    <tr>
        <td>Disable</td>
        <td>L1 or L20</td>
        <td>L20</td>
        <td></td>
    </tr>
    <tr>
        <td rowspan="3">Tangela</td>
        <td>Bind</td>
        <td>L1</td>
        <td>L24</td>
        <td rowspan="3">Moves were shifted around to make room for Vine Whip.</td>
    </tr>
    <tr>
        <td>Absorb</td>
        <td>L29</td>
        <td>L27</td>
    </tr>
    <tr>
        <td>Growth</td>
        <td>L49</td>
        <td>L48</td>
    </tr>
    <tr>
        <td rowspan="5">Gyarados</td>
        <td>Tackle</td>
        <td>From Magikarp</td>
        <td>L1</td>
        <td rowspan="5">Rebalanced for the fact that it's now catchable. This could also be considered a Trainer nerf. However, the Pika Cup rental Gyarados actually uses the removed attacks at L15, making it an illegal rental.</td>
    </tr>
    <tr>
        <td>Bite</td>
        <td>L1</td>
        <td>Removed</td>
    </tr>
    <tr>
        <td>Dragon Rage</td>
        <td>L1</td>
        <td>Removed</td>
    </tr>
    <tr>
        <td>Leer</td>
        <td>L1</td>
        <td>Removed</td>
    </tr>
    <tr>
        <td>Hydro Pump</td>
        <td>L1</td>
        <td>Removed</td>
    </tr>
    <tr>
        <td rowspan="5">Eevee</td>
        <td>Sand-Attack</td>
        <td>L1</td>
        <td>L8</td>
        <td></td>
    </tr>
    <tr>
        <td>Quick Attack</td>
        <td>L27</td>
        <td>L23</td>
        <td>Yellow can be used to get Quick Attack Eevee prior to L25 for Petit Cup, which is actually really important for its moveset.</td>
    </tr>
    <tr>
        <td>Tail Whip</td>
        <td>L31</td>
        <td>L1</td>
        <td>This legalizes Tail Whip for use in Petit Cup.</td>
    </tr>
    <tr>
        <td>Bite</td>
        <td>L37</td>
        <td>L30</td>
        <td>This legalizes Bite Eevee for use in Petit Cup on L30 builds, but Body Slam is normally more effective.</td>
    </tr>
    <tr>
        <td>Take Down</td>
        <td>L45</td>
        <td>L42</td>
        <td></td>
    </tr>
    <tr>
        <td rowspan="9">Vaporeon</td>
        <td>Sand-Attack</td>
        <td>L1</td>
        <td>L8</td>
        <td></td>
    </tr>
    <tr>
        <td>Quick Attack</td>
        <td>L27</td>
        <td>L23</td>
        <td></td>
    </tr>
    <tr>
        <td>Water Gun</td>
        <td>L31</td>
        <td>L16</td>
        <td>Given Water Gun is a TM, this doesn't change anything, unlike Tail Whip and Bite.</td>
    </tr>
    <tr>
        <td>Tail Whip</td>
        <td>L37</td>
        <td>L1</td>
        <td>This legalizes Tail Whip Vaporeon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
    </tr>
    <tr>
        <td>Bite</td>
        <td>L40</td>
        <td>L30</td>
        <td>This legalizes Bite Vaporeon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
    </tr>
    <tr>
        <td>Acid Armor</td>
        <td>L42</td>
        <td>L47</td>
        <td></td>
    </tr>
    <tr>
        <td>Haze</td>
        <td>L44</td>
        <td>L42</td>
        <td rowspan="2">Because a Pok&eacute;mon can only learn one move via level-up at a time, Haze is prioritized over Mist. The only way to learn Mist in Yellow is by leveling up Vaporeon in the Pok&eacute;mon Day Care near Cerulean City.</td>
    </tr>
    <tr>
        <td>Mist</td>
        <td>L48</td>
        <td>L42</td>
    </tr>
    <tr>
        <td>Hydro Pump</td>
        <td>L54</td>
        <td>L52</td>
        <td>Hydro Pump can be used two levels early in Pok&eacute; Cup.</td>
    </tr>
    <tr>
        <td rowspan="9">Jolteon</td>
        <td>Sand-Attack</td>
        <td>L1</td>
        <td>L8</td>
        <td></td>
    </tr>
    <tr>
        <td>Quick Attack</td>
        <td>L27</td>
        <td>L23</td>
        <td></td>
    </tr>
    <tr>
        <td>Thundershock</td>
        <td>L31</td>
        <td>L16</td>
        <td>This legalizes Thundershock Jolteon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
    </tr>
    <tr>
        <td>Tail Whip</td>
        <td>L37</td>
        <td>L1</td>
        <td>This legalizes Tail Whip Jolteon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
    </tr>
    <tr>
        <td>Thunder Wave</td>
        <td>L40</td>
        <td>L42</td>
        <td></td>
    </tr>
    <tr>
        <td>Double Kick</td>
        <td>L42</td>
        <td>L40</td>
        <td></td>
    </tr>
    <tr>
        <td>Pin Missile</td>
        <td>L44</td>
        <td>L47</td>
        <td></td>
    </tr>
    <tr>
        <td>Agility</td>
        <td>L48</td>
        <td>L36</td>
        <td></td>
    </tr>
    <tr>
        <td>Thunder</td>
        <td>L54</td>
        <td>L52</td>
        <td></td>
    </tr>
    <tr>
        <td rowspan="9">Flareon</td>
        <td>Sand-Attack</td>
        <td>L1</td>
        <td>L8</td>
        <td></td>
    </tr>
    <tr>
        <td>Quick Attack</td>
        <td>L27</td>
        <td>L23</td>
        <td></td>
    </tr>
    <tr>
        <td>Ember</td>
        <td>L31</td>
        <td>L16</td>
        <td>This legalizes Ember Flareon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
    </tr>
    <tr>
        <td>Tail Whip</td>
        <td>L37</td>
        <td>L1</td>
        <td>This legalizes Tail Whip Flareon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
    </tr>
    <tr>
        <td>Bite</td>
        <td>L40</td>
        <td>L30</td>
        <td>This legalizes Bite Flareon for use in Nintendo Cup '98 if Yellow moves are allowed.</td>
    </tr>
    <tr>
        <td>Leer</td>
        <td>L42</td>
        <td>L47</td>
        <td></td>
    </tr>
    <tr>
        <td>Fire Spin</td>
        <td>L44</td>
        <td>L36</td>
        <td></td>
    </tr>
    <tr>
        <td>Flamethrower</td>
        <td>L52</td>
        <td>L54</td>
        <td>Flamethrower can be used two levels early in Pok&eacute; Cup.</td>
    </tr>
    <tr>
        <td>Rage</td>
        <td>Not learned</td>
        <td>L28</td>
        <td>Rage was already learned via TM20, so it doesn't really matter.</td>
    </tr>
</table>

<p>The Nidoran lines famously got Double Kick at level 12 via Yellow version, which is partly what made the early-game bearable when facing down Brock. This also gives them some minor extra coverage in Pika Cup, although you're probably better off using stronger moves like Earthquake, Thunderbolt, and Blizzard. It's technically possible to use Pok&eacute;mon Red to learn Poison Sting prior to the threshold of level 15, though it's a largely useless move.</p>

<p>Most Eeveelutions got some love here; Eevee gets access to Quick Attack prior to level 25, making it a bit more viable for a Petit Cup playthrough in Stadium considering its awful base movepool. Vaporeon and Flareon also got access to their strongest moves at level 52&mdash;Hydro Pump and Flamethrower, respectively&mdash;making them slightly easier to fit on balanced-level teams in Pok&eacute; Cup.</p>

<p><a href="#toc">Back to table of contents!</a></p>

<hr />

<h2 id="events">Events</h2>

<h3 id="stadium-gift-pokemon">Stadium Gift Pok&eacute;mon</h3>

<div class="center">
    <img src="//play.pokemonshowdown.com/sprites/gen1/pikachu.png" alt="Pikachu" />
    <img src="//play.pokemonshowdown.com/sprites/gen1/psyduck.png" alt="Psyduck" />
</div>

<p>The first Japanese Stadium title&mdash;often colloquially referred to as "Stadium Zero"&mdash;allows Pikachu to be taught Surf if one clears the level 30 cup based on Nintendo Cup '98. In the second Stadium title, which was released internationally, if one clears Prime Cup Master Ball Round 2 with a Pikachu in their party without saving, so long as it is picked in the final battle, Pikachu can also be taught Surf. This is the most accessible method of obtaining a Pikachu with Surf, which is crucial to its success competitively, as well as accessing the Pikachu's Beach minigame in Pok&eacute;mon Yellow.</p>

<p>Additionally, if one gets all 151 Pok&eacute;mon in the Hall of Fame in Pok&eacute;mon Stadium, they can receive a level 15 Amnesia Psyduck, which single-handedly turns its evolution from a thoroughly mediocre Pok&eacute;mon into a significant threat, giving it a much-needed identity as a special sweeper. In fact, Amnesia Golduck is so strong, it was banned from RBY NU in 2020!</p>

<h3 id="japan-exclusives">Japan-exclusive Event Pok&eacute;mon</h3>

<div class="center">
    <img src="//play.pokemonshowdown.com/sprites/gen1/magikarp.png" alt="Magikarp" />
    <img src="//play.pokemonshowdown.com/sprites/gen1/fearow.png" alt="Fearow" />
    <img src="//play.pokemonshowdown.com/sprites/gen1/rapidash.png" alt="Rapidash" />
</div>

<p>In Japan, a select few Pok&eacute;mon were distributed that had otherwise unobtainable moves. While generally unimpressive, these would pave the way for more famous event distributions, such as the notorious New York Pok&eacute;mon Center events in GSC. Because the RBY events were only available in Japan, these Pok&eacute;mon cannot be used in international games, as trading them across regions causes save data corruption. These events are considered to be among the rarest of all time, normally being distributed to a pool of 20 players each. Due to the nature of these events, they are also Japan-exclusive legality, akin to Japanese Blue's DVs.</p>

<p>Pikachu first got Surf via event on June 12th, 1997 via the "Pok&eacute;mon 2 Idea Contest" in Shogakukan's CoroCoro magazine. For this event, readers submitted Pok&eacute;mon ideas for the then-upcoming Pok&eacute;mon Gold and Silver titles. Tsunekazu Ishihara and Satoshi Tajiri selected their top 20 contestants, who sent in their cartridges to receive the Pikachu. Therefore, this Pikachu is extremely rare. This distribution would be repeated twice as a kind of raffle in later issues, each with 20 winners. However, two similar distributions were also performed for a Fly Pikachu, which is unobtainable in the West. Both Pikachu were distributed at level 5, though a Surf Pikachu can theoretically be obtained at level 3 through Stadium's Move Tutor.</p>

<p>Shogakukan also distributed a special Dragon Rage Magikarp at level 15 via the "Tamamushi University Hyper-Test" event in July 1998, wherein players submitted a series of answers to six tests in the CoroCoro magazine issues. The top 1,000 "students" of these Pok&eacute;mon exams were entered into a raffle to be among 20 "professors" to obtain the legendary Magikarp. The rest (jncluding the raffle winners) obtained a special medal and promotional Pok&eacute;mon card, both of which are considered to be extremely rare collector's items today, commanding gigantic prices online.</p>

<p>The final round of events with unique moves were the Pok&eacute;mon Fan Club Chairman's Fearow and Rapidash, which were distributed with Pay Day in the August 1998 issue of CoroCoro magazine. They were at levels 25 and 40, respectively, and were otherwise normal Pok&eacute;mon. This distribution was part of a greater "Pok&eacute;mon Stamp" campaign where readers could obtain various collectible stamps, which featured the Red and Blue art sets on them. These weren't "real" postage stamps, though, just collectible ones. These stamps would continue being produced well into the 2000s and beyond, featuring later generation art sets.</p>

<h3 id="mew">Mew</h3>

<div class="center">
    <img src="//play.pokemonshowdown.com/sprites/gen1/mew.png" alt="Mew" />
</div>

<p>Mew needs no introduction, being one of the most widely distributed Pok&eacute;mon of its era and having a very heavy influence on RBY Ubers with its Swords Dance sets. It was most commonly distributed with a 5/10/1/12/5 DV spread, although exceptions exist, and the 2016 Virtual Console versions of the game had real-life events where players could get a Mew with 15 DVs in every stat. Most of the time, Mew was distributed at level 5. Mew was given out in many, many events worldwide, often in tournaments and other large gatherings. There have been some "groups" that have been identified, such as the YOSHIDA Mew, Nintendo character OTs, and more, giving each Mew a degree of intrigue.</p>

<p><a href="#toc">Back to table of contents!</a></p>
art resized to 600x399

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I added a few more of the sprites (to the events section), but didn't add the rest as to not overdo it.

Lumari

e: I may go to sleep soon, feel free to edit this or something in my place if it's urgent and I am asleep.
 
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