Shroom Siege

    Two teams of four shroom characters coordinate and outsmart each other, with AI filling any empty places.

    Upside Down Bird

    Playing together

    Online co-op
    1 source
    Online versus
    1 source
    Online multiplayer
    1 source
    Players in online co-op
    1 source
    Players online
    1 source
    Crossplay
    1 source
    Local co-op
    1 source
    Plays in browser
    1 source
    Demo
    1 source
    Not known yet
    Best with, How co-op works, Multiplayer through mods, One copy is enough, Free to play, Playtest, Early access

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    How you talk

    Not known yet
    Plays without voice or typing, Wordless tools, Public matchmaking, Friendly with strangers

    About the game

    Welcome to Shroom Siege, a fast-paced multiplayer game that balances strategy and fun. In a 4 vs 4 setting, you'll embody a shroom character, coordinating with your teammates and using quick thinking to outsmart your opponents. Shroom Siege brings together the best aspects of local and online multiplayer games, making it a versatile choice for any gaming session. Whether you're sharing a couch with friends or playing with others from around the globe, this game ensures a dynamic experience tailored to your setup. What's more, Shroom Siege supports cross-play across Steam and Nintendo Switch platforms, bringing together an even larger community of players. This means you can compete with friends and others regardless of their chosen platform. And don't worry if you're short of human players - AI steps in to balance the 4v4 gameplay.
    From IGDB

    Screenshots

    Sources

    First listed 1 Nov 2026. Updated 3 Nov 2026.