Subnautica is an open-world underwater adventure set on an alien ocean planet teeming with beauty and danger. After crash-landing, you must explore coral reefs, volcanic vents, and deep cave systems while scavenging resources, crafting gear, building bases, and piloting submarines to survive. Manage hunger, thirst, and oxygen in Survival mode, or explore freely in Freedom and Creative modes without survival pressures. Unravel the mystery of the planet’s past, discover strange wildlife both friendly and hostile, and push deeper into the unknown in search of a way home. Redesigned for mobile with a revamped UI, touch controls, cloud saves, and controller support, Subnautica offers an immersive, perilous, and breathtaking journey beneath alien waves.