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Mega Man III
洛克人3
Mega Man III is a side-scrolling action platformer developed by Capcom in 1992 for the Game Boy. Players control Mega Man as he battles eight robot masters across distinct themed levels. The gameplay follows the series' signature formula: defeat robot masters to obtain their special weapons, then use these powers strategically against other enemies. Navigation involves precise platforming across hazardous terrain while avoiding enemy fire. Once all eight stages are cleared, Mega Man faces the final confrontation. The Game Boy version features eight selectable stages with sprite-based graphics and chiptune audio adapted for the handheld's hardware. Combat relies on the jump and shoot mechanics controlled via the directional pad and action buttons. Progression is nonlinear—players choose which stage to tackle first, affecting difficulty and available weapons.
- Developer
- Capcom
- Released
- 1992
- Platform
- Game Boy
- Genre
- Action
- Players
- 1P
- Rating
- 4.3 / 5 (6.1K)
- Last updated
Mega Man III Controls — Game Boy Keyboard Keys
Default keyboard bindings for Mega Man III on our in-browser Game Boy emulator. Plug in a USB or Bluetooth gamepad to auto-detect mappings, or rebind any key from the emulator settings menu.
| Keyboard | Console button | Typical use |
|---|---|---|
| ↑ | D-Pad Up | Move up |
| ↓ | D-Pad Down | Move down |
| ← | D-Pad Left | Move left |
| → | D-Pad Right | Move right |
| X | A | Primary action (jump / confirm) |
| Z | B | Secondary action (attack / cancel) |
| Enter | Start | Start / Pause |
| Shift | Select | Select / Mode |
Rebind any key from the EmulatorJS in-game settings menu (gear icon → Controls). A connected gamepad auto-maps to the same buttons.
Mega Man III Longplay & Gameplay Videos
Watch a full playthrough of Mega Man III on Game Boy before you dive in — recommended for getting a feel for the game's pacing, story beats, and difficulty curve.
Watch longplay on YouTube
"Mega Man III" Game Boy longplay 1992
Mega Man III Cheat Codes
30 community-curated cheats for Mega Man III. Tick any to activate them automatically when you click "Play with cheats" — or copy a code into your own emulator.
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Start with 2 lives
02B-17F-E66 -
Start with 6 lives
06B-17F-E66 -
Start with 9 lives
09B-17F-E66 -
Infinite energy
00C-099-3B701989CDE01EE9CDE -
Laser barriers appear and explode immediately on Sparkman stage
009-77C-E6E -
Takes 1 hit to kill Merciless Matt
019-53C-F76 -
Takes 15 hits to kill Merciless Matt
0F9-53C-F76 -
Infinite Lives
010A08DD00A-B1F-3BE -
Infinite RC
01989DDE -
Infinite SP
01989EDE -
Infinite GE
01989FDE -
Infinite SN
0198A0DE
Show 18 more cheats Show fewer
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Infinite SH
0198A1DE -
Infinite PU
0198A2DE -
Infinite RJ
0198A3DE -
Infinite DI
0198A4DE -
Infinite SK
0198A5DE -
Infinite DR
0198A6DE -
Infinite DU
0198A7DE -
Invincibility
010139D7 -
Moon Jump
00E-459-80B+18E-6F9-A22+18E-709-5D4+0EE-719-4C1 -
Jump In Midair
FAE-3F9-6EE+3FE-409-C43+E6E-429-193+01E-439-3B4+00E-469-3BE+1C0-028-3BA+180-038-4CA -
One Hit Kill
009-6ED-E6E+00F-25F-E6E -
Infinite Weapon Energy
002-35B-A22+FA4-88A-4C1+FA8-A9A-4C1 -
Hit Anywhere
18F-E5F-08A+11F-E6F-D5A+009-6ED-E6E+00F-25F-E6E -
Infinite Weapon Energy Modifier
01EB9DDE01EB??DE -
Select Level & Automatically Beat It
011B4CDE -
Have Weapon Modifier 1
01029ADE01??9ADE -
Have Weapon Modifier 2
01019BDE01??9BDE -
Fire A Constant Stream of Fully Charged Mega Buster Shots!
018A55D7O18A55D7
External references
Frequently Asked Questions
When was Mega Man III released?
Mega Man III was released in 1992 for the Game Boy.
Who developed Mega Man III?
Mega Man III was developed by Capcom, available to play in your browser on RetroGameSpace.
How many players does Mega Man III support?
Mega Man III is a single-player Action game for the Game Boy.
What type of game is Mega Man III?
Mega Man III is a Action game for the Game Boy, playable instantly in your browser — no downloads, no installs.
How can I play Mega Man III for free?
Open this page and click "Play Now" — Mega Man III runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play Mega Man III in the browser?
No. Mega Man III streams from a public archive into a browser-side Game Boy emulator. Nothing is installed on your computer.
Can I save my progress in Mega Man III?
Yes. Save states are stored in your browser (IndexedDB) per game, and you can also use any in-game save the original Game Boy cartridge supported.
Does Mega Man III work on mobile devices?
Yes — the Game Boy emulator runs on iOS Safari and Android Chrome. Touch controls overlay the game; landscape mode is recommended.
Is it legal to play Mega Man III this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Mega Man III. Game files are fetched on demand from publicly-accessible archives. You are responsible for compliance with your local laws and the bring-your-own-ROM principle.
