is a standalone expansion and sequel to the original underwater survival game, Subnautica . Set two years after the first game, you return to Planet 4546B to investigate the mysterious circumstances surrounding your sister's disappearance while surviving in its unforgiving arctic region. Download and Official Platforms

: Encounter a mix of friendly and hostile life, including the massive Shadow Leviathan , adorable Pengwings , and the terrifying Ice Worm . Version Note (v49411)

: Manage oxygen and hunger, while also staving off the "Cold" mechanic by crafting cold suits, drinking hot coffee, or seeking warmth from Thermal Lilies.

To ensure a safe and legitimate installation, it is recommended to download the game through official digital storefronts. As of April 2026, the game is available on the following platforms: