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Multiplayer games › Party & co-op › Co-op platformer

Is Fat Mask multiplayer or co-op?

Yes — co-op and PvP, plus local/split-screen. Fat Mask is a co-op platformer game released in 2017, 87% positive on Steam (31 reviews). $9.99 on Steam.

Co-opPvPLocal / split-screenSingle-player tooParty & co-op · Co-op platformer

Fat Mask is an arcade puzzle brawler that creates a frenetic experience thanks to a unique mix of brawler and…

Steam tags: Local Multiplayer, Competitive, Puzzle-Platformer, Indie, Casual, Local Co-Op, Action, Puzzle

Do you and a friend both own Fat Mask?

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

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Tired of Fat Mask? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is Fat Mask co-op?
Yes, Fat Mask supports co-op.
Does Fat Mask have PvP?
Yes, Fat Mask has player-versus-player modes.
How many people play Fat Mask?
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