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.
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 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