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How to Play Gun Mayhem IO
Use WASD and the mouse to move and aim. Shoot opponents to knock them off the island and grab crates to upgrade your weapon.
About Gun Mayhem IO
Stay on the island or get blasted off — that's the only rule. Gun Mayhem IO pits you against opponents in a frantic platform shootout where getting knocked off the edge spells defeat. Pick your weapon wisely, crack open crates for firearm upgrades, and outlast everyone else on the arena floor.
Gun Mayhem IO is a free Shooter Survival game you can play in your browser. Tagged .io, .io games, 3d, shooting.
Frequently Asked Questions
How do you win in Gun Mayhem IO?+
Knock all opponents off the island platform while staying on it yourself — last player standing wins.
What do crates do?+
Crates drop firearm upgrades that improve your weapon's power or type during a match.
Is Gun Mayhem IO free?+
Yes — play it free in your browser on MisuChan, no download needed.