Mega Man III box art

Game Boy · cheat codes

Mega Man III cheats & codes

66 codes for Mega Man III on the Game Boy, including Game Genie, GameShark, Xploder codes.

Mega Man III Game Genie codes

How to use: Galoob's Game Genie plugged in between the console and the cartridge. Type the codes in on its start-up screen, then press Start. In emulators, add them through the cheat menu and choose the Game Genie format if asked.

EffectCode
Start With 2 Lives02B-17F-E66
Start With 6 Lives06B-17F-E66
Start With 9 Lives09B-17F-E66
Infinite Energy00C-099-3B7
Laser Barriers Appear & Explode Immediately On Sparkman Stage009-77C-E6E
Takes 1 Hit To Kill Merciless Matt019-53C-F76
Takes 15 Hits To Kill Merciless Matt0F9-53C-F76

Mega Man III GameShark codes

How to use: GameShark (sold as Action Replay outside North America) codes are entered on the device's menu or in your emulator's cheat menu. Some games need a "master code" or "must be on" code enabled first, so turn that on if a list includes one.

EffectCode
Infinite Energy01EE9CDE
Infinite Weapon Energy Modifier01EB??DE
Infinite Lives010A08DD
Infinite RC01989DDE
Infinite SP01989EDE
Infinite GE01989FDE
Infinite SN0198A0DE
Infinite SH0198A1DE
Infinite PU0198A2DE
Infinite RJ0198A3DE
Infinite DI0198A4DE
Infinite SK0198A5DE
Infinite DR0198A6DE
Infinite DU0198A7DE
Select Level & Automatically Beat It011B4CDE
Have Weapon Modifier 101??9ADE
Have Weapon Modifier 201??9BDE
Fire A Constant Stream of Fully Charged Mega Buster Shots!018A55D7
Infinite Weapon Power01002EC2

Mega Man III Xploder codes

How to use: Xploder (also sold as Xplorer) codes are entered on the device's menu or in an emulator that supports Xploder codes.

EffectCode
Unendlich Energie$0DB9740D
Unendlich Leben$0D240871

Mega Man III More GameShark codes

How to use: GameShark (sold as Action Replay outside North America) codes are entered on the device's menu or in your emulator's cheat menu. Some games need a "master code" or "must be on" code enabled first, so turn that on if a list includes one.

EffectCode
Start with 2 lives02B-17F-E66
Start with 6 lives06B-17F-E66
Start with 9 lives09B-17F-E66
Infinite energy00C-099-3B7
Laser barriers appear and explode immediately on Sparkman stage009-77C-E6E
Takes 1 hit to kill Merciless Matt019-53C-F76
Takes 15 hits to kill Merciless Matt0F9-53C-F76
Infinite Energy01989CDE
Infinite Lives010A08DD
Infinite RC01989DDE
Infinite SP01989EDE
Infinite GE01989FDE
Infinite SN0198A0DE
Infinite SH0198A1DE
Infinite PU0198A2DE
Infinite RJ0198A3DE
Infinite DI0198A4DE
Infinite SK0198A5DE
Infinite DR0198A6DE
Infinite DU0198A7DE
Invincibility010139D7
Moon Jump00E-459-80B 18E-6F9-A22 18E-709-5D4 0EE-719-4C1
Jump In MidairFAE-3F9-6EE 3FE-409-C43 E6E-429-193 01E-439-3B4 00E-469-3BE 1C0-028-3BA 180-038-4CA
One Hit Kill009-6ED-E6E 00F-25F-E6E
Infinite Weapon Energy002-35B-A22 FA4-88A-4C1 FA8-A9A-4C1
Hit Anywhere18F-E5F-08A 11F-E6F-D5A 009-6ED-E6E 00F-25F-E6E
Infinite Energy01EE9CDE
Infinite Weapon Energy Modifier01EB9DDE
Select Level & Automatically Beat It011B4CDE
Have Weapon Modifier 101029ADE
Have Weapon Modifier 201019BDE
Fire A Constant Stream of Fully Charged Mega Buster Shots!018A55D7
Infinite Weapon Power01002EC2
Skip Intro ScreenFA8-0F9-D5D
Invulnerability00B-CE9-C4A
Infinite Lives00A-B1F-3BE
Start With All WeaponsFF8-6BF-E6E 578-6FF-5D4
Always Drop Item Modifier18B-15A-08A 01B-12A-E6E 00B-10A-809

Using cheats today

Original cheat devices like the Game Genie, Action Replay and GameShark still turn up second-hand and work with original cartridges. Most modern emulators also have a built-in cheat menu that accepts these formats, so you can toggle codes on and off without extra hardware. Codes can differ between regional releases and revisions of a game; if one doesn't work, try the code list for another version.

Cheats can corrupt save files in rare cases, so back up your saves before experimenting.

Mega Man III walkthroughs & guides

More Game Boy games with cheats

Back to Mega Man III: is it worth playing?

Cheat codes are from the libretro-database community collection, used under CC BY-SA 4.0; the code tables on this page are shared under the same license. Codes are provided as-is: some may not work on every version of the game.