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Subnautica 2 cover art

Subnautica 2

Deck VerifiedActionAdventureMay 14, 2026Unknown Worlds Entertainment
Online once to activate

Steam lists no extra DRM or account for this game. Install and sign in to Steam while online once, then switch Steam to Offline Mode.

Buy on Steam $29.99

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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.

Offline details by store

StoreStore flagsOffline statusWhat that meansSource
SteamNone listed Online once to activate Steam lists no extra DRM or account for this game. Install and sign in to Steam while online once, then switch Steam to Offline Mode. Steam store page

Statuses are read from each store's own information, not tested by us, and can change with patches. Check the store page before you buy. How we decide. Steam Deck rating from Valve's compatibility report.

Last data refresh: October 26, 2026.

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