Oxygen Not Included
In short: Oxygen Not Included is a strategy game released in 2019 by Klei Entertainment, available on PC. Our score: 9.0/10 (highly recommended).
Colony survival sim managing a space rock base
Oxygen Not Included challenges you to manage a space colony's life support. Every resource matters: oxygen, food, water, power, and stress. Complex simulation systems create emergent challenges.
Game details
- Developer: Klei Entertainment
- Publisher: Klei Entertainment
- Release year: 2019
- Platforms: PC
- Category: strategy
Our review
Oxygen Not Included, developed and published by Klei Entertainment, is a masterclass in colony simulation and resource management. Released in 2019, this PC-exclusive title throws players into the deep end of managing a burgeoning space rock base, demanding meticulous planning, scientific understanding, and a healthy dose of trial and error. The core gameplay loop revolves around digging, building, researching, and maintaining your colony of duplicants, endearing little clones with their own quirks and needs. The sheer depth of interconnected systems, from intricate plumbing and ventilation to complex power grids and temperature regulation, is both daunting and incredibly rewarding. Learning to optimize these systems to ensure your duplicants' survival against the harsh realities of space and their own bodily functions is where the game truly shines. While there isn't a traditional 'story' per se, the emergent narratives that arise from your colony's triumphs and tribulations are capt…
Pros
- Deep and complex simulation mechanics
- Endless replayability with emergent gameplay
- Charming art style
- Satisfying learning curve
Cons
- Steep learning curve can be daunting for new players
- Can be overwhelming due to the sheer number of systems to manage
- Lack of a traditional story might not appeal to everyone
FAQ
- What is Oxygen Not Included?
- Oxygen Not Included (ONI) is a space colony simulation game developed by Klei Entertainment. Players manage a colony of duplicants, guiding them to dig, build, and maintain a self-sufficient underground base on an alien asteroid.
- What are the core mechanics of Oxygen Not Included?
- The core mechanics revolve around resource management (oxygen, food, water, power), base building, and dupilcant health and morale. Players need to manage gases, liquids, and temperature to create a habitable and productive environment.
- Is Oxygen Not Included a difficult game?
- Yes, ONI is known for its steep learning curve and complex systems. It can be challenging, especially for new players, but highly rewarding once you understand the interconnected mechanics.
- What platforms is Oxygen Not Included available on?
- Oxygen Not Included was released in 2019 and is currently available on PC.
- Who developed and published Oxygen Not Included?
- Oxygen Not Included was both developed and published by Klei Entertainment.
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Last updated: 01/04/2026