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Subnautica 2

Early Access
by Unknown Worlds Entertainment ยท 14 May, 2026
Steam Deck Verified
Single-player Multiplayer Co-op Online Co-op Full Controller Cloud Saves Family Sharing
Subnautica 2 is an underwater survival adventure set on an alien world, developed by Unknown Worlds. It can be played solo or in online co-op for up to four players, and is in Early Access.

Subnautica 2 is an underwater survival adventure and the next entry in the Subnautica series, developed by Unknown Worlds. The player is a Pioneer travelling aboard the colony ship CICADA, sent by Alterra to settle a new world after conflict forces people from their homes. When something goes wrong during the journey, the ship’s AI insists the mission must continue, and the player is left stranded and must survive on an alien planet.

The game centres on exploration, survival and building. Players travel through different biomes using the Tadpole submersible, scan and study the local wildlife, and encounter creatures ranging from small animals to large Leviathans. Bases can be designed and customised as places to return to when venturing beyond shallow waters. Tools, equipment and vehicles can be upgraded, and the story involves uncovering why the ship’s AI is committed to the mission and what lies beneath the surface.

Subnautica 2 is designed as a single-player experience, with optional online co-operative multiplayer for up to three friends alongside the player. There are four pre-designed characters, with more characters and customisation options planned during Early Access. The game is an Early Access title in active development, and the developer states that more biomes, creatures, craftables and story content will be added over time. Players may encounter bugs, unfinished features and performance issues, and feedback is used to guide development. Unknown Worlds also made Subnautica and Subnautica: Below Zero.

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Reviews

Very Positive

119,189 reviews

DLC

1

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1 Sep 2026

We've only just started watching this one, so there's no line to draw yet. Read from Steam every few hours, last 2 months ago.

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