Alien 3 Action Replay Codes (USA)
This page contains the Action Replay codes that I have available for Alien 3 (USA), a game for the original NES (Nintendo Entertainment System). If you're playing on an emulator, you'll typically be able to put these codes into the program through a built in option. Anyone who is really old school and playing on a physical console will have to purchase a physical Action Replay device to use these codes.
If you don't see the code you want on this page, I recommend you return to my Alien 3 Guides Index and choose a different section.
Infinite Energy: 074A:18
Infinite Flame Thrower Ammo: 074D:50
Infinite Grenade Launcher Ammo: 074C:32
Infinite Hand Grenades: 074E:28
Infinite Lives: 07FE:09
Infinite Machine Gun Ammo: 074B:63
Infinite Time (One's Digit): 0744:09
Infinite Time (Ten's Digit): 0743:09
Invincibility: 03C8:4A
Machine Gun Never Overheats: 0749:00
Rescue All Of The Prisoners Immediately: 0747:00
The Machine Gun Keeps Firing Constantly: 0749:01
Title Screen Music Modifier: 803E:??:04
Turn Ladder On Wherever: 0094:9B
You can climb anywhere up/down after turning this on. Use a save state because it's very easy to die with this code on. Disable code to get back down.
Walk Through Walls: 04C0:04
Hold Jump when you encounter an obstacle, disables jumps and ladders
Guardian 1 Hit Kills
03A6:00
03A7:00
Time Modifier
0742:??
0743:??
0744:??