Subnautica: Below Zero

Dive into a freezing underwater adventure on an alien planet. Below Zero is set two years after the original Subnautica. Return to Planet 4546B to uncover the truth behind a deadly cover-up. Survive by building habitats, crafting tools, & diving deeper into the world of Subnautica.

Developer: Unknown Worlds Entertainment.

Tags: Solo, Open World Survival Craft, Survival, Underwater.

Steam reviews: Very Positive (91% of 96,660).

Price: $29.99.

Released 2021-05-13.

Last updated 2026-04-01.

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