Is Mutation Mayhem multiplayer or co-op?

Yes — PvP, plus local/split-screen. Mutation Mayhem is a action-adventure game released in 2018, 71% positive on Steam (28 reviews). Free on Steam.

Steam tags: Free to Play, Action, Indie, Casual, Multiplayer

Do you and a friend both own Mutation Mayhem?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Mutation Mayhem is one of them — then helps you pick tonight's game with a weighted roll or a bracket.

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Quick answers

Is Mutation Mayhem co-op?

Mutation Mayhem does not list co-op on Steam; it has PvP, Local / split-screen.

Does Mutation Mayhem have PvP?

Yes, Mutation Mayhem has player-versus-player modes.

How many people play Mutation Mayhem?

Player counts were not available when this page was built.

Ready Up is a free tool: enter two Steam usernames and it lists the multiplayer games you both own, runs a bracket to pick one, and suggests new co-op games that fit how you both play. Ratings, tags and player counts from Steam and SteamSpy; page updated 2026-09-09. Powered by Steam — not affiliated with or endorsed by Valve Corporation or Microsoft. How the data works · Legal & privacy · All types · Game Pass