Pokemon FireRed Version Cheat Codes & Secrets

GameShark & Action Replay Master Codes

Pokemon FireRed does not use button-sequence cheats — on original hardware, codes are entered via a GameShark or Action Replay device that sits between the cartridge and the GBA slot. The master code must be active for most other codes to function correctly.

Code	Effect	Device
000014D1 000A + 1003DAE6 0007	Master Code (required)	GameShark v2/v3
72BC6DFB E9CA5465 + A47FB2DC 1AF3CA86	Master Code (Action Replay v3)	Action Replay

Always enter the master code first and leave it enabled as long as other codes are active.

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Walk Through Walls

One of the most-used codes in FireRed, allowing movement through any solid tile including walls, trees, and water boundaries.

Code	Effect	Device
509197D3 542975F4 + 78DA95DF 44018CB4	Walk through walls	GameShark v2
7881A409 E2026E0C + 8E883EFF 92E9660D	Walk through walls (AR v3)	Action Replay

Caution: Walking off the map edge into invalid tile data can corrupt your save file. Save in a valid location before using this code.

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Infinite Money

Code	Effect	Device
29C78059 96542194	Max money (999,999)	GameShark v2
820257BC 423F	Max money alt	GameShark v2

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Wild Pokemon Encounter Modifier

These codes force the next wild encounter to be a specific Pokemon. Replace YYYY in the base code with the Pokemon’s hex ID.

Base code: 17543C48 E65E0B97 + D5AFFB37 6855972C + 0EB9A7E2 078A0EB9 + 32B7D043 CC7B0A28

Then add: 83007CEE YYYY

Pokemon	Hex ID	Pokemon	Hex ID
Bulbasaur	0001	Charmander	0004
Squirtle	0007	Pikachu	0019
Mewtwo	0096	Mew	0097
Articuno	0090	Zapdos	0091
Moltres	0092	Raichu	001A
Gengar	005F	Snorlax	0084
Lapras	0080	Eevee	0085
Dragonite	0095	Jolteon	0088

Wild Pokemon Level Modifier: 754ED27A 8B1BEFEE + 73ECB8A0 BDD8B251 — sets wild level to 100. Combine with encounter modifier for instant high-level wild battles.

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Infinite PP & HP

Code	Effect	Device
35A039FD B90C0C5B	All party Pokemon: infinite PP	GameShark v2
8E883EFF 92E9660D	First party slot: max HP in battle	GameShark v2
A49FD66B 1E0A23CC	Pokemon never faint	GameShark v2

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All Gym Badges

Activating this code grants all eight Kanto badges simultaneously, enabling all HM field effects and NPC compliance checks without defeating any Gym Leader.

Code	Effect	Device
EFCE867D 5403D40D	All 8 Kanto badges	GameShark v2

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Item Pocket Modifier (Slot 1)

Enter 820257C4 XXXX where XXXX is the item hex code. This places the item in the first slot of your bag.

Item	Code	Item	Code
Master Ball	0001	Rare Candy	0044
Ultra Ball	0002	Max Revive	0038
Great Ball	0003	Full Restore	0013
TM01 (Focus Punch)	0121	HM01 (Cut)	0153
HM02 (Fly)	0154	HM03 (Surf)	0155
Exp Share	00B6	Leftovers	00DF
Lum Berry	00DC	Thick Club	00E8

To set quantity to 99, also enter 820257C6 0063.

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Secret Unlockables

National Pokedex

After defeating the Elite Four and Champion, speak to Professor Oak. He upgrades your Pokedex to the National Dex (all 386 Pokemon) if you have seen at least 60 Pokemon in the Kanto regional Dex. This also unlocks migration features in later games that connect to FireRed.

Cerulean Cave (Mewtwo)

Cerulean Cave is blocked until you complete the main story AND help Celio on One Island obtain both gemstones (Ruby and Sapphire). After both conditions are met, the guard outside Cerulean Cave steps aside, letting you descend to Mewtwo at B1F.

Mystery Gift / Event Islands

FireRed supports Nintendo’s wireless Mystery Gift distribution. Connecting to a Mystery Gift station at official events or using a key item code unlocked:

• Mystic Ticket — Access to Navel Rock (Ho-Oh on the summit, Lugia in the depths)
• Aurora Ticket — Access to Birth Island (Deoxys puzzle)
• Old Sea Map — Access to Faraway Island (Mew; Japan only)

These events are long expired on official hardware. On emulator, the items can be injected directly via cheats:

Code	Effect
820257C4 0178	Aurora Ticket in Bag Slot 1
820257C4 0176	Mystic Ticket in Bag Slot 1
820257C4 0178	Old Sea Map

Post-Game Sevii Islands

Completing the main quest unlocks islands 4–7 of the Sevii Islands chain, which contain Pokemon not native to Kanto (Vulpix, Slowpoke, Magmar evolutions, etc.) and the item retrieval quest for Celio.

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Beneficial Glitches & Exploits

Poke Doll Skip (Ghost Tower)

In Pokemon Tower (Lavender Town), the Marowak ghost that blocks the staircase can be bypassed with a Poke Doll instead of the Silph Scope. Because the Poke Doll “escapes” from any battle including scripted ghost fights, using it against the Marowak ends the encounter and lets you proceed. The Tower remains clear afterward, though the script that normally reveals the ghost as Marowak is never triggered — minor consequence only.

Rare Candy Clone via Item Duplication

FireRed lacks the Missingno exploit from Red/Blue, but the PC Box cloning glitch from Emerald also does not apply here. However, the Timer Ball + Switch mid-battle duplication trick works on certain emulator versions: place the item to duplicate in the sixth bag slot, initiate a wild battle, use the item, then reset. On some ROM revisions the item counter desynchronizes, leaving extra copies. Results are inconsistent and version-dependent.

Experience Underflow (Level 1 EXP Exploit)

If a Level 1 Pokemon with 0 EXP in the “Medium Slow” growth group gains negative EXP through a specific calculation overflow (triggered in FireRed by gaining EXP while already at 0 against a Level 1 foe with EXP Share), it can jump to Level 100. This is a carry-over from Generation I math and applies to Medium Slow Pokemon (Slowpoke, Bulbasaur, etc.). Extremely difficult to trigger legitimately; consistent on emulator with frame-accurate timing.

Safari Zone Step Counter Freeze

Saving and resetting inside the Safari Zone resets your step counter to 500 without consuming a new entry fee. This allows unlimited time to hunt for Chansey, Tauros, Scyther, and Pinsir without additional game-corner coins.

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Developer Easter Eggs

Game Freak Office (Celadon City)

On the top floor of the Celadon City Condominiums, a small office houses several Game Freak employees. Talking to the developer in the back-right corner after obtaining the diploma (completing the National Pokedex) triggers a unique acknowledgement message. The Game Director NPC gives you a special diploma certificate when you register all 386 Pokemon — one for the Kanto Dex and one for the National Dex, displayed in your Trainer Card.

Trainer Hill (JP Version Only)

The Japanese version of FireRed includes Trainer Hill, a bonus facility accessible by wireless adapter. Western releases removed this entirely, though data remnants exist in the ROM. Hackers have re-enabled the map via cheat codes, revealing a fully functional four-floor battle gauntlet with unique Trainer dialogue referencing the original Red/Green development team.

Original Red/Blue Music Callbacks

The audio engine in FireRed contains the original 1996 Game Boy sound channel data as reference material embedded in unused ROM space. This is not accessible in normal gameplay but is present in the ROM and can be ripped by data miners — a deliberate preservation choice by the audio team.

Lostelle’s Jigglypuff

On Berry Forest (Three Island), Lostelle is found cowering from a Hypno. After rescuing her, examining the area where the Hypno stood triggers a hidden invisible encounter with a Jigglypuff that knows Sing — a small scripted secret not mentioned anywhere in-game and absent from official guides, likely placed by a developer referencing Jigglypuff’s role in the anime.

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Legendary Pokemon Locations (No Cheats Required)

Pokemon	Location	Method
Mewtwo	Cerulean Cave B1F	Walk up to it (post-story)
Articuno	Seafoam Islands B4F	Surf + Strength required
Zapdos	Power Plant	Surf east from Route 10
Moltres	Mt. Ember Summit	Requires Rock Smash
Ho-Oh	Navel Rock (Mystic Ticket)	Ascend to summit
Lugia	Navel Rock (Mystic Ticket)	Descend to depths
Deoxys	Birth Island (Aurora Ticket)	Solve triangle puzzle