Game Modes

Subnautica currently features three different Game Modes.

Freedom: No food or water requirements. You will not die of thirst or hunger.
Survival: In Survival mode, you must find, prepare, and consume food and fresh water to stay alive.
Hardcore: In addition to the food and water requirements of Survival mode, Hardcore mode adds permadeath. There are no second chances.

In Survival and Hardcore mode, a food and an H2O bar are added to the HUD. In Hardcore mode, there are no low oxygen warnings.

Additionally, a set of Prototypes was made available for fans through the Subnautica Special Edition (10,000 copies).

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