Subnautica 2

    Explore an alien ocean world, build bases and survive together in online co-op.

    Unknown Worlds Entertainment

    Playing together

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

    Hover, focus or tap a fact to see where it came from.

    How you talk

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

    About the game

    Subnautica 2 is an underwater survival adventure set on an all-new alien world, developed by Unknown Worlds. Play alone or with friends in 4-player co-op. Adapt to survive by building custom bases and crafting tools. Explore the unknown to uncover the mysteries hidden within the depths.
    From Steam

    Screenshots

    Why we rate it this way

    • 91% positive from 129,694 Steam reviews.
    Steam, checked 1 Nov 2026Num reviews: 1Review score: 8Review score desc: Very PositiveTotal positive: 117930Total negative: 11764Total reviews: 129694{"num_reviews":1,"review_score":8,"review_score_desc":"Very Positive","total_positive":117930,"total_negative":11764,"total_reviews":129694}

    Sources

    First listed 1 Nov 2026. Updated 1 Nov 2026.