Oxygen Not Included

Oxygen Not Included is a survival simulation developed and published by Klei Entertainment. After being released on Steam's early access from February 2017, the final version of the game was released on July 30, 2019.

At the beginning of the new game, the three colonists found themselves in an asteroid with isolated pockets of airy atmosphere, with no recollection of how they got there. The player is tasked with managing and taking care of these colonists as they attempt to survive and create a viable makeshift space colony. The player must monitor the colonists ’hunger, waste, and oxygen to keep them alive. The world of each game is procedurally generated. Although the initial areas include an aerating atmosphere, areas within the world are under vacuum or lacking oxygen, which requires colonists to properly prepare them before exploring these areas. The game simulates the diffusion of gases and equalization of the atmosphere when a new natural chamber is opened, which can cause the oxygen levels in existing chambers to drop, as well as drainage of liquids by gravity.

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