About Subnautica

After a violent crash-landing on an alien ocean planet, there is only one direction to travel: down. Subnautica is an underwater adventure from the indie scene that drops you into a sprawling open world stretching from sunlit coral shallows to lightless trenches, lava fields, and glowing subterranean rivers. Oxygen is a constant concern here, and every dive through kelp forests, plateaus, and twisting cave systems is a calculated gamble. The water is alive, and while some of that life will help you, plenty of it wants you dead.

Survival begins the moment your Life Pod settles on the surface. You scavenge the surrounding sea for raw materials, then craft diving equipment, lighting, habitat modules, and submersibles to reach greater depths where scarcer resources wait. On the seafloor you assemble bases of your own design, choosing layouts and parts while keeping an eye on hull integrity as pressure climbs. These outposts become places to stockpile supplies, dock vehicles, and top up your air before pushing further into the dark.

Running beneath the survival loop is a genuine mystery. Strange structures dot the ocean, the local wildlife shows signs of infection, and clues hint that something went badly wrong on this world long before you arrived. Piecing that story together gives this PC adventure its pull.