Subnautica is an open world game, underwater exploration and adventure.

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After landing on an alien ocean world, the only way to go is down. Subnautica's oceans range from sunny shallow coral reefs to treacherous deep trenches. Manage your oxygen supply as you explore kelp forests, plateaus, reefs and winding caves systems. The water is full of life: Some of it useful, much of it harmful.

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After waking up in your Life Pod, the clock is rushing to find water, food, and to develop the equipment you need to explore. Collect ocean resources around you. Craft knives, lights, diving equipment and personal water craft. Aventure deeper and more way to find rarer features, which allows you to create more advanced items.

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The ocean is full of life: Use the ecosystem to help you. Attract and distract the threatening creature with a fresh fish, or simply swim as fast as you can to avoid the clutches of predators.