
Bio Attack
First released in 1983 by iconic Japanese arcade developer Taito, Bio Attack is a fast-paced fixed vertical shooter that stood out in the golden age of arcade games for its unique sci-fi medical theme. Unlike most space-themed shooters of the era, Bio Attack places players in control of a miniaturized combat craft injected into the bloodstream of a critically ill patient, tasked with eliminating waves of invading pathogens, mutated cells, and parasitic organisms before they cause irreversible organ damage. Each level is set in a different part of the human body, from the lungs to the neural pathways, with distinct enemy designs tailored to each environment: you’ll face swarms of fast-moving viruses, spore-releasing bacteria, and heavily armored parasite bosses at the end of every stage. The game’s bright, vivid 8-bit pixel art and catchy, upbeat chiptune soundtrack made it a fan favorite in arcades throughout the 1980s, with its challenging but fair difficulty curve keeping players com

The emulator loads after you press Start Game.
How to Play Bio Attack
Save & Load States
- F2Press F2 to save your current game state at any time.
- F4Press F4 to load your last saved state.
- F3Use F3 to switch between save slots.
Save states are stored locally in your browser. They persist across sessions but are cleared if you clear browser data.
Customize Controls
Click the gear icon on the emulator toolbar → "Controls" to remap keys.
Default layout for ARCADE. Remap in emulator settings.
About Bio Attack
Bio Attack is a classic ARCADE game you can play online for free in your browser. No download or installation is required — click "Play Now" to start instantly. Relive the experience of vintage console gaming with authentic gameplay, right in your browser on any device.
This title is part of the PLAYERETRO game collection, which features over 1000 classic titles across multiple systems. Use the keyboard controls shown above to move and interact. Save your progress with save states and enjoy Bio Attack anytime, anywhere.
Play the classic 1983 Taito arcade shooter Bio Attack for free online on PLAYERETRO. Fight invading pathogens inside the human body in this beloved golden age retro arcade title.