Pokémon Red and Blue Game Genie codes

This article lists Game Genie codes for Pokémon Red and Blue.

GameShark simulator (breaks OAM sprites)

XXB-FCB-E65

EAB-FDB-6E9

YYB-FEB-F73

ZZB-FFB-192

C9C-00B-4CA

(This is too many cheats for the physical retail Game Genie, so at present it's unknown if this can be done on an actual Game Boy. The code corresponds to 01XXYYZZ from a GameShark and should be used as soon as the game is powered on.)

RNG Plays Pokémon Game Genie version

D30-01B-089

Make Pokémon Red's title screen say "GreenVersion" (Red only)

645-A3B-197

635-A2B-6EF

625-A1B-6EB

Wild encounters are never updated after changing maps

C9E-B8B-6EE

(Can also be used as a 'no encounters' code if started in a building, or an 'old man glitch anywhere' code after watching the old man's demonstration)

Change Pidgey's Pokédex number:

XX0-47A-A2A

Change Rattata's Pokédex number:

XX0-C8A-A26

(Replace XX with the Pokédex number in hexadecimal you want. Both can be used to access artificial glitch Pokémon families)

Replace Oak's intro Nidorino:

XX should be replaced with a hexadecimal Pokémon value from The Big HEX List.

XX1-6D9-7F4

'Instant win' every battle

C91-1EB-5D4

Notes: Similar to Pokémon Gold, Silver and Crystal behavior for having no available Pokémon on the field.

Access Trainer classes:

XXF-549-C49

3EF-539-B31

(XX should be replaced with the desired Trainer class (actual index number or Trainer escape glitch value -200). Artificial Trainer classes are supported)

Sprites aren't filled in properly and look like a painting

C96-BFD-081

Lots of moves do no damage or miss

C9F-65A-2A9

(The bad poison effect from Toxic is an example of something that still causes damage, so bringing a Pokémon knowing Toxic is useful here)

Metronome move picker:

XX3-639-804

3E3-629-D5D

(Requires a Pokémon that knows the move. XX should be replaced with 01-A4 excluding 76 (Metronome itself). The impossible values 76 and A5-FF, 00 result in a freeze.)

Ghosts don't have ghost sprite and can attack you. Can't attack them:

C98-3AA-081

Battle corruption, if wild battle "invisible battle" mode:

C90-4CB-D5D

Trainers have Charizard 'M with excessive HP:

C9C-53A-081

Break Pokémon and some Trainer sprites:

C94-FDD-F77

Predef commands are broken.

C9E-6DC-4C1

Notes: The title screen intro is skipped, some sprites never load and you start in a Glitch City with no money. You're trapped as well with these orange lines in front of you that makes it look like Red is trapped behind bars. Can't load save data, but doesn't destroy it after you turn off the power and play without this code

Breaks beginning of bank switch function

Notes: Also breaks many sprites and game functions. Text at the beginning of title screen intro is missing as well

C95-D6C-2A9

Instead of Trainer approach music, the previous music continues to play:

C93-E8C-081

Game Corner slots emote bubble modifier:

XX3-368-E62

(03 and up are glitch emote bubbles)

Base stats modifications

Magikarp

XX must be replaced with the desired base stat in hexadecimal.

XX1-DFA-B3A: HP

XX1-E0A-C42: Attack

XX1-E1A-3B6: Defense

XX1-E2A-A2B: Speed

XX1-E3A-B3A: Special

Sources

• "Game Boy Game Genie codes?" forums thread