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.
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