Subnautica is an underwater adventure game set on an alien ocean planet A massive open world full of wonder & peril awaits you! Dive Into a Vast Underwater World You have crash-landed on an alien ocean world & the only way to go is down Subnautica&s oceans range from sun-drenched shallow coral reefs to treacherous deep-sea trenches lava fields & bio-luminescent underwater rivers Manage your oxygen supply as you explore kelp forests plateaus reefs & winding cave systems The water teems with life Some of it helpful much of it harmful Scavenge Craft & Survive After crash landing in your Life Pod the clock is ticking to find water food & to develop the equipment you need to explore Collect resources from the ocean around you Craft knives lights diving gear & personal water craft Venture deeper & further form to find rarer resources allowing you to craft more advanced items Construct Underwater Habitats Build bases on the sea floor Choose layouts & components & manage hull-integrity as depth & pressure increase Use your base to store resources park vehicles & replenish oxygen supplies as you explore the vast ocean Unravel the Mystery What happened to this planet? Signs abound that something is not right What caused you to crash? What is infecting the sea life? Who built the mysterious structures scattered around the ocean? Can you find a way to make it off the planet alive? Disrupt the Food Chain The ocean teems with life Use the ecosystem to help you Lure & distract a threatening creature with a fresh fish or simply swim as fast as you can to avoid gnashing jaws of roaming predators Handle the Pressure Build a Pressure Re-Active Waterproof Nanosuit or PRAWN Suit & explore extreme depth & heat Modify the suit with mining drills torpedo launchers propulsion cannons grappling hooks & more Fear the Night As the sun goes down the predators come out The ocean is unforgiving of those caught unprepared in the darkness Areas that are safe to explore during the day become treacherous at night but also reveal a beauty that those who hide from the darkness will never see Dive Below the Ocean Floor Cave systems wind below the sea bed from dark claustrophobic passages to caverns lit by bio-luminescent life & burning-hot lava flows Explore the world below the ocean floor but watch your oxygen levels & take care to avoid the threats lurking in the darkness Descend into the depths of an alien underwater world filled with wonder & peril Craft equipment pilot submarines & out-smart wildlife Explore lush coral reefs volcanoes cave systems & more Underwater survival & exploration