During the first global biowar, a powerful retrovirus filled the planet Avaron with new and deadly forms of life. Only a few survivors remain in O.P. Odysseus, an orbiting platform circling Avaron.
Hundreds of years after the biowar, conditions on Avaron are still hostile but livable. Your mission is to pilot a Bioship to Avaron, fly over the areas that the probes have labeled least hostile, and check out the conditions there.
Frequently asked questions
How do I start Bio Hazard Battle?
Press the "Play this game" button above. The emulator will load in your browser and you can use on-screen controls or your keyboard.
Can I play on mobile?
Yes. This Sega Mega Drive title supports modern mobile browsers — rotate your phone to landscape for the best experience.
Are there save states?
Save states are stored locally in your browser. If you clear site data or switch devices, your saves may be lost.
What genre is this game?
Action game released around 2025.
What makes this game special?
During the first global biowar, a powerful retrovirus filled the planet Avaron with new and deadly forms of life. Only a few survivors remain…