🕹ī¸
Cuphead Boss Duel
Action, Platformers & Side-Scrollers • Canada
FREE PLAYS 0 / 5
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● Cuphead Boss Duel
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Cuphead Boss Duel

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

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🕹ī¸ Controls & Instructions

HTML5 Canvas standard controls. Arrow keys, mouse clicks or touch screen.

About This Game

1930s rubber-hose cartoon run-and-gun fighting massive screen-filling bosses.

đŸŽ¯ CHAMPION TO BEAT
All-Time #1
Topper Avatar
RetroQueen
1 Month ago
8,621
Points Record
Play now and beat 8,621 pts to become the new #1 Champion!

🏆 Hall of Fame

Full Board →
#1 Avatar RetroQueen
8,621
#2 Avatar PixelKnight
7,277
#3 Avatar CyberValkyrie
6,185
#4 Avatar player1
4,741
💡 Guest scores are temporary. Create an account to permanently record your score!

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❓ Frequently Asked Questions & Playing Guide

Everything you need to know about playing Cuphead Boss Duel online unblocked.

Can I play Cuphead Boss Duel unblocked at school or work?
Yes! Cuphead Boss Duel 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 Cuphead Boss Duel 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!