Pokémon Red and Blue Game Genie codes

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

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)

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