Mega Man Action Replay Codes (USA)
This page contains the Action Replay codes that I have available for Mega Man (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 Mega Man Guides Index and choose a different section.
Inf. lives: 00A6:03
Infinite Lives: 00A6:09
Switch F/X On To Levitate Jump: 0660:7E
Infinite Energy: 006A:1C
Infinite Health: 006A:1F
Untouchable: 0055:5A
If you fall off the screen or hit spikes you'll still die
Jump Higher: 0620:00
Stage select music modifier: B6DB:??:01
Score Modifier (Hundred Thousands Digit) (0-9): 0077:??
Score Modifier (Hundreds Digit) (0-9): 0074:??
Score Modifier (Millions Digit) (0-9): 0078:??
Score Modifier (Ones Digit) (0-9): 0072:??
Score Modifier (Ten Thousands Digit) (0-9): 0076:??
Score Modifier (Tens Digit) (0-9): 0073:??
Score Modifier (Thousands Digit) (0-9): 0075:??
All weapons, all robot bosses defeated (You may go straitght to Dr. Wily stage): 005D:FF
Boss 1 Hit Kill: 06C1:00
You'll need to wait for the life meter to fill before hitting them with some bosses
Greyscale Mode: 08FE:1F
This will make the game black and white. For different colors try 2F, 3F, 4F etc
Level Highlighter: 0031:??
No Enemies: 91BC:FF
Disable before fighting a boss. This may also remove some needed platforms throughout the level.
Speed Modifier: 04C0:??
01 is the normal value for speed, increase it to go faster
Start At Dr Wily With All Weapons: 005D:FF
Suit Modifier: 005F:??
UFO Background Music: 0549:00
Wrap To Top If You Fall Down Pit: OZKPGXOK
(Suit Modifier) Cut Man - Scissors: 005F:01
(Suit Modifier) Electric Man - Blue Electricity Bolt: 005F:02
(Suit Modifier) Bomber Man (Green Suit) - Throws An Item: 005F:03
(Suit Modifier) Fireman - Flings Fire: 005F:04
(Suit Modifier) Guts Man - Flings Three Projectiles In Three Separate Directions: 005F:05
(Suit Modifier) Rush? - Couldn't Get It To Work: 005F:06
(Suit Modifier) Ice Man - Fires Beam Platforms: 005F:07
Guardian 1 Hit Kill
06D0:00
06D1:00