I’ve been searching for some Action Replay codes for the NTSC-U version of Resident Evil 4 (GameCube) that either were never made or may have been lost over time.
- So far I’ve found working codes for:
Infinite Ammo
Infinite Health
Force Equip Chicago Typewriter
Pause Timer
Increased Enemy HP
Ralf’s Mercenaries Nightmare modes
A code to increase or remove the enemy spawn cap in Mercenaries mode.
A way to disable enemy ammo drops in Mercenaries.
With infinite ammo enabled, I’ve basically turned Mercenaries into a chaos sandbox. The only limitation I’m running into is that once I clear the map, I have to reset because of the spawn cap.
I’ve done a little live memory editing (ammo values, etc.), but I don’t have programming or PowerPC assembly experience. I also tried searching for weapon IDs without much success.
I did send Ralf a PM (Feb 23, 2026), but I’m not sure if he’s still active. The threads that led me here are:
viewtopic.php?t=2020
viewtopic.php?p=58690&hilit=resident+evil+4+PAL#p58690
If anyone has information, documentation, or advice on where the Mercenaries spawn logic is handled, I’d appreciate it. If it’s not possible via AR, that’s fine too — I just wanted to ask before giving up on the idea.
Thanks for reading.