Subnautica is an open-world horror survival action-adventure video game developed and published by Unknown Worlds Entertainment. Players are free to explore the ocean on the alien planet 4546B, after their spaceship, the Aurora, crashes on the planet's surface. The player must collect resources and face creatures to survive the alien planet.
Subnautica was released in early access for Microsoft Windows in December 2014, macOS in June 2015, and for Xbox One in May 2016. It was released out of early access in January 2018 for Microsoft Windows and macOS, with versions for Xbox One and PlayStation 4 in December 2018. The physical console versions were published by Gearbox Publishing. The Nintendo Switch, PlayStation 5, and Xbox Series X/S versions were released in May 2021.
By January 2020, more than five million copies had been sold. A sequel, Subnautica: Below Zero, was released May 14, 2021.