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Bio-Terror Mutant Onslaught
Contra, Commando & 2D Run-and-Gun Action • Global
FREE PLAYS 0 / 5
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Bio-Terror Mutant Onslaught

Play in high-performance full-screen immersion with edge-to-edge resolution and unlocked controls!

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🕹ī¸ Controls & Instructions

Use WASD or Arrow Keys to run and jump. Down arrow to crouch. Press J, Space, or Click to fire weapon. Collect weapon capsules and defeat the stage boss.

About This Game

Set within Scorched Middle-Eastern Fortress & Bunkers. Players command Major Brock 'Havoc' Sterling (Heavy Weapons Ordinance Expert) against escalating challenges, harnessing reactive canvas physics, signature superpowers, and deep tactical controls to conquer contra & 2d run-and-gun commando.

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❓ Frequently Asked Questions & Playing Guide

Everything you need to know about playing Bio-Terror Mutant Onslaught online unblocked.

Can I play Bio-Terror Mutant Onslaught unblocked at school or work?
Yes! Bio-Terror Mutant Onslaught runs entirely in your web browser using HTML5 Canvas and WebGL. There are zero external executable files, downloads, or plug-ins required. It works on Chromebooks, school laptops, Mac, and Windows PC.
How do I enable Force Fullscreen mode?
Click the ⚡ Fullscreen button in the cabinet top bar or click the PLAY FULLSCREEN button on the launch banner. This expands the game into edge-to-edge 100vw x 100vh resolution with locked mouse controls for maximum immersion. Press ESC anytime to exit.
Does Bio-Terror Mutant Onslaught support mobile touch controls?
Yes, all games on Cyber Arcade feature adaptive mobile responsiveness with virtual on-screen thumbsticks and action buttons, or intuitive tap-and-drag touch gestures.
How are scores verified and saved to the leaderboard?
When you complete a game run or score points, the game automatically submits your score to the official arcade score validation engine via the secure ArcadeBridge API. Create a free player account to save your scores permanently and compete on Daily, Weekly, Monthly, and All-Time leaderboards!