Metroid Action Replay Codes (USA)
This page contains the Action Replay codes that I have available for Metroid (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.
When it comes to emulation for the NES you have 3 good options to choose from. You can do RetroArch, Nestopia or MesenCE, follow the links provided to learn more about how to use the codes you find on this page on the Emulator of your choice. If you don't see the code you want on this page, I recommend you return to my Metroid Guides Index and choose a different section.
Have Justin Bailey Code Typed In
1 hit kills all flying enemies per screen: 0027:FF
All Power Ups: 6878:FF
Always Fire: 010E:0?
Ending Time Modifier: 687E:??
Infinite Energy: 0107:04
Energy may decrease but will never run out
Infinite Energy Tanks: 6877:10
Infinite Energy Tanks: 6877:0A
Infinite Energy, All Items, Infinite Missles: 69B2:01
HP changes but Samus can't die
Infinite Time To Escape Tourian: 010B:99
Only enable this code AFTER the Mother Brain has been defeated
Invincible, except touching Mother Brain: 0040:37
Skywalker: 0314:00
No high jump but you can jump multiple times instead
Start With Infinite Missiles: 6879:55
Start With Infinite Missiles: 6879:FF
Suitless Samus: 69B3:01
Switch F/X On To Levitate Jump: 0312:00
Totally Invincible: 0070:0B
Untouchable: 0070:02
Samus must be moving in the direction you want her to jump.
Always Fire - Regular Weapon: 010E:00
Always Fire - Ballistic Missiles: 010E:01
Fully-powered 5-way shot
003C:04
003D:05
Infinite Energy
0106:90
0107:79