Bio Hazard Battle
A landmark action game for the Sega Genesis, Bio Hazard Battle combines tight controls with engaging gameplay. Its enduring appeal lies in the perfect balance of challenge and reward.
- Developer
- SEGA
- Released
- 1992
- Platform
- Mega Drive
- Genre
- Action
- Players
- 2P
- Rating
- 4.9 / 5 (2K)
- Last updated
Bio Hazard Battle Controls — Mega Drive Keyboard Keys
Default keyboard bindings for Bio Hazard Battle on our in-browser Mega Drive 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) |
| S | C | Tertiary action |
| A | X | Quaternary action |
| Q | Y | Fifth button |
| W | Z | Sixth button |
| Enter | Start | Start / Pause |
These bindings cover the 6-button Mega Drive controller. Most older titles only use buttons A/B/C; the extra X/Y/Z buttons matter for Street Fighter II and other 6-button fighters.
Rebind any key from the EmulatorJS in-game settings menu (gear icon → Controls). A connected gamepad auto-maps to the same buttons.
Bio Hazard Battle Longplay & Gameplay Videos
Watch a full playthrough of Bio Hazard Battle on Mega Drive before you dive in — recommended for getting a feel for the game's pacing, story beats, and difficulty curve.
Watch longplay on YouTube
"Bio Hazard Battle" Mega Drive longplay 1992
Bio Hazard Battle Cheat Codes
9 community-curated cheats for Bio Hazard Battle. Tick any to activate them automatically when you click "Play with cheats" — or copy a code into your own emulator.
-
Invincibility
FFA60D:47FFA60C:0047R1RT-A61L+3 -
Infinite Lives
FFF248:0003ADSA-AAEYAXRA-AA38 -
Start With 99 Lives
NNGA-BE2T -
Start With 255 Lives
96GA-BE2T -
Master Code
ATBT-AA22 -
Enabled Cheat Code Stage Select
FFF226:00FFREFT-A6YN -
Opportunity play choose one and the same ship P1 P2
FFF246:0001 -
Infinite Credit
FFF204:0009 -
Enabled Cheat Code Play The Same Two Ships
FFF247:0001
External references
Frequently Asked Questions
When was Bio Hazard Battle released?
Bio Hazard Battle was released in 1992 for the Mega Drive.
Who developed Bio Hazard Battle?
Bio Hazard Battle was developed by SEGA, available to play in your browser on RetroGameSpace.
How many players does Bio Hazard Battle support?
Bio Hazard Battle supports up to 2 players, ideal for couch co-op or competitive sessions on the Mega Drive.
What type of game is Bio Hazard Battle?
Bio Hazard Battle is a Action game for the Mega Drive, playable instantly in your browser — no downloads, no installs.
How can I play Bio Hazard Battle for free?
Open this page and click "Play Now" — Bio Hazard Battle runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play Bio Hazard Battle in the browser?
No. Bio Hazard Battle streams from a public archive into a browser-side Mega Drive emulator. Nothing is installed on your computer.
Can I save my progress in Bio Hazard Battle?
Yes. Save states are stored in your browser (IndexedDB) per game, and you can also use any in-game save the original Mega Drive cartridge supported.
Does Bio Hazard Battle work on mobile devices?
Yes — the Mega Drive emulator runs on iOS Safari and Android Chrome. Touch controls overlay the game; landscape mode is recommended.
Is it legal to play Bio Hazard Battle this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Bio Hazard Battle. 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.
