Subnautica: Below Zero

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About Subnautica: Below Zero

Subnautica: Below Zero is an open-world survival action-adventure game developed and published by Unknown Worlds Entertainment. It entered Steam Early Access on January 30, 2019, and reached its full 1.0 release on May 14, 2021, for PC, macOS, Nintendo Switch, PlayStation 4, PlayStation 5, Xbox One, and Xbox Series X/S. The game continues the story of Planet 4546B two years after the events of the first game.

Robin Ayou, a rogue employee of the Xenoworx corporation, crash-lands in the frozen wastes of Sector Zero while investigating a mysterious incident tied to her sister's disappearance. Alterra left the region in a hurry following the incident, leaving behind abandoned research stations scattered across the area. Piecing together logs, items, and databanks found among the wreckage, players slowly uncover the truth behind what really happened to the scientists who lived and worked there, all while surviving with limited resources in an unforgiving arctic environment.

Gameplay carries over the core survival loop established in the original Subnautica: gathering resources, crafting tools and equipment, building underwater and surface habitats, and diving deeper into increasingly hostile biomes to progress the story. Below Zero introduces distinct new environments unique to its colder setting, including the glowing blue-lit Twisty Bridges, the glittering giant crystals of the Crystal Caverns, and the snow-covered peaks and icy tunnels of the Glacial Basin, alongside new wildlife and threats adapted to the region's freezing conditions.

Subnautica: Below Zero received a full Nintendo Switch 2 upgrade on February 17, 2026, available free to existing Switch owners, along with a mobile port for iOS and Android on February 26, 2026. Subnautica: Below Zero holds a Metacritic score of 82 and a Very Positive rating on Steam.

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