About This Game
Subnautica is an open world, underwater exploration and adventure game currently in development by Unknown Worlds, the developer behind Natural Selection 2.
After crashing on an alien ocean world, the only direction you can go is down. Subnautica’s oceans stretch from sun-kissed surface coral reefs to treacherous abyssal trenches.
Manage your oxygen supply as you explore kelp forests, plateaus, reefs, and twisting cave systems.