Pokémon Yellow

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Hmmm...
To do:
Merging with Red and Blue would be reasonable since there's not enough content specific to Yellow to warrant a separate article.


Title Screen

Pokémon Yellow: Special Pikachu Edition

Also known as: Pocket Monsters: Pikachu (JP)
Developer: Game Freak
Publisher: Nintendo
Platforms: Game Boy, Super Game Boy, Game Boy Color
Released in JP: September 12, 1998
Released in US: October 1, 1999
Released in EU: June 16, 2000
Released in AU: September 3, 1999


MusicIcon.png This game has unused music.
TextIcon.png This game has unused text.


Pokémon Yellow is basically Red and Blue, reworked to match the anime more closely. This includes that one yellow mouse everyone loves... right?

Contents

"Hurry, get away!"

An unused battling system of identifier 03 exists in the single byte managing what battle system is used (normal, Safari Zone, Old Man, etc.), but is never used in the final releases. Attempting to attack, switch Pokémon, or use an item will give the message "Hurry, get away!" The chance of escaping from a battle in this mode is always 100%.

As this battle mode only exists in Yellow, it could be suggested that Game Freak originally intended players to receive a Pikachu past Pallet Town themselves. If so, this battle system would be essential to prevent the player from sending out an invalid Pokémon of identifier 00 (3trainerpoké) with an invalid moveset corresponding to information from other existing variables in the game. Instead, a battle system was implemented so that Professor Oak would capture a Pokémon (which always has the cry "Pika!")

The battle mode can be triggered by using GameShark code 010359D0 and triggering a battle encounter.

Map Changes

Cerulean Cave (Japanese: ハナダのどうくつ), also known as Unknown Dungeon (Japanese: ななしのどうくつ) during Generation I, was changed for every Japanese release. The Japanese Red and Green had a layout that was changed for the Japanese Blue, and this revision was retained for the international releases of Red and Blue. Yellow had a layout only used for that version, albeit a simpler one.

All comparisons below use the Japanese versions as reference.

Floor 1F

Red and Green Blue (JP)/International Red and Blue Yellow
PKMN RG J Unknown Dungeon 1F.png PKMN RB U Unknown Dungeon 1F.png PKMN Y Unknown Dungeon 1F.png

Notice how the layouts of the cave in the Japanese Red, Green, and Blue are actual mazes: the player will get to dead-ends and has to find the right ladder to proceed. In Yellow, on the other hand, the path was made more linear and straightforward.

Floor 2F

Red and Green Blue (JP)/International Red and Blue Yellow
PKMN RG J Unknown Dungeon 2F.png PKMN RB U Unknown Dungeon 2F.png PKMN Y Unknown Dungeon 2F.png

The most uneventful floor, yet the most tricky to navigate. Basically, the ladders remained in the same position and the maze changed between the revisions.

Floor B1F

Red and Green Blue (JP)/International Red and Blue Yellow
PKMN RG J Unknown Dungeon B1F.png PKMN RB U Unknown Dungeon B1F.png PKMN Y Unknown Dungeon B1F.png

The bottom floor, where item placement also changed, but the layouts generally have a straightforward path to the main reward in all the revisions: Mewtwo.

Unused Music

An unused track present only in Yellow, located in the soundbank of the Pikachu's Beach minigame and the game's extra features. It may be related to the "Hurry, get away!" battle system, although probably not the battle system itself because battle music is located in a separate soundbank.

The track can be played by enabling GameShark codes 0120EFC0 0120F0C0 019F5AD3 and accessing a different map.

Pikachu's Beach 750-Point Bonus

The unused 750 points bonus

The Pikachu's Beach minigame is available via the Dude inside of a house at Route 19, south of Fuchsia City, which only exists in Yellow. Talking to the Dude with a Pikachu knowing the move Surf with the same O.T. and Trainer ID as the player in the party (available via Pokémon Stadium) unlocks a minigame similar to Excitebike where Pikachu has a limited amount of time (HP) to reach a shore and get marked based on remaining HP and the total number of "radness" points earned by flips.

There is a radness bonus of 750 points (internal index number of 0x04) but it isn't assigned to any number of flips, regular or "special" (forward-backwards), in the game. It can be accessed with GameShark code 0104D9C5. GameShark code 013972D1 can be used to replace the first Pokémon in the party's first move with Surf.

Red, Green, and Blue Leftovers

Main article: Pokémon Red and Blue

All the unused data from Red, Green, and Blue remains in the programming code of Yellow. There is a small change pertaining to the unused Butterfree-for-Beedrill in-game trade, however: its English nickname was changed from "CHIKUCHIKU" to "STINGER". It otherwise remains unavailable in regular gameplay.

(Source: IIMarckus)

Regional differences

The Japanese Yellow was a Super Game Boy game, just like Red and Blue. Game Boy Color support was added to the international versions.

Unused Cries

Hmmm...
To do:
Add more information, if necessary, and the tracks of the cries themselves.


There are multiple unused cries for Pikachu that are various voice types performed by Ihue Ohtani, the Japanese voice actress of Pikachu in the anime.

Unused Gift Pokémon Function

The unused debug function to add Pokémon to the player's party from Red and Blue also exists in Yellow, at 01:62E2 for all versions of Japanese Yellow, 01:623E for English Yellow, 01:6253 for German, 01:62C7 for French, 01:628D for Italian and 01:6285 for Spanish. In all versions of Yellow, four Pokémon are added to the player's party:

  • Snorlax, level 80
  • Persian, level 80
  • Jigglypuff, level 15
  • Pikachu, level 5

Unused Trades

In addition to the aforementioned Butterfree-for-Beedrill in-game trade, Yellow adds two more unused trades, probably related to the removal of the in-game trades in Cerulean City and Vermilion City: Pidgeot-for-Pidgeot and Mew-for-Mew, respectively. In the Japanese Yellow, both received Pokémon are nicknamed まつみや (Matsumiya, presumably after Toshinobu Matsumiya, who is listed in the credits of Yellow under Game Scenario).

The English localization keeps the unused trade data, but changes the names of the received Pokémon to "MARTY" and "BART", respectively.

(Source: IIMarckus)