Zero One
Zero One stands as a defining action title on the Game Boy Advance. With polished gameplay mechanics and memorable level design, this classic delivers an experience that has stood the test of time.
- Developer
- Fuuki
- Released
- 2003
- Platform
- GBA
- Genre
- Action
- Players
- 1P
- Rating
- 4.7 / 5 (1.6K)
- Last updated
Zero One Controls — GBA Keyboard Keys
Default keyboard bindings for Zero One on our in-browser GBA 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) |
| Q | L | Left shoulder |
| W | R | Right shoulder |
| 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.
Zero One Longplay & Gameplay Videos
Watch a full playthrough of Zero One on GBA before you dive in — recommended for getting a feel for the game's pacing, story beats, and difficulty curve.
Watch longplay on YouTube
"Zero One" GBA longplay 2003
External references
Frequently Asked Questions
When was Zero One released?
Zero One was released in 2003 for the GBA.
Who developed Zero One?
Zero One was developed by Fuuki, available to play in your browser on RetroGameSpace.
How many players does Zero One support?
Zero One is a single-player Action game for the GBA.
What type of game is Zero One?
Zero One is a Action game for the GBA, playable instantly in your browser — no downloads, no installs.
How can I play Zero One for free?
Open this page and click "Play Now" — Zero One runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play Zero One in the browser?
No. Zero One streams from a public archive into a browser-side GBA emulator. Nothing is installed on your computer.
Can I save my progress in Zero One?
Yes. Save states are stored in your browser (IndexedDB) per game, and you can also use any in-game save the original GBA cartridge supported.
Does Zero One work on mobile devices?
Yes — the GBA emulator runs on iOS Safari and Android Chrome. Touch controls overlay the game; landscape mode is recommended.
Is it legal to play Zero One this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Zero One. 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.
