Game Atlas
All reviews
Oxygen Not Included

Oxygen Not Included

DE EN

"A Thermodynamics PhD Wearing a Colony Sim"

About

You manage a colony of duplicants trapped inside an asteroid, balancing their needs for oxygen, food, water, and stable temperatures while researching technologies and constructing increasingly complex systems. Minute-to-minute gameplay involves designating tasks, laying pipes and wires, farming crops, mining resources, and troubleshooting cascading failures as your colony expands and resource demands grow exponentially.

Verdict

Klei buried one of the most demanding systems games ever made under a coat of cartoon paint, and the disguise is the whole joke. Every gas, liquid and degree of heat follows rules that never cheat, so when your colony collapses it is always your fault, which is exactly why you start again. The learning curve is a cliff and the early hours can feel impenetrable, but nothing else turns a closed-loop physics simulation into this much fun.

You'll like it if …

  • +you treat cascading failures as puzzles to engineer your way out of
  • +you want a closed-loop simulation where every collapse traces back to your own decisions
  • +you don't mind leaning on guides and wikis to crack opaque systems

You'll dislike it if …

  • you want to feel competent in the first few hours rather than after fifty
  • you prefer systems explained in-game over reverse-engineering them yourself

Breakdown

Gameplay
  • +Gases, liquids, heat and power obey consistent rules, so failure is always legible and fixable
  • +Fixing one problem reliably spawns a more interesting one, creating an endless engineering puzzle
  • Brutal learning curve that can take 50-100 hours before mechanics click
Depth
  • +Procedural asteroids and DLC keep hundreds of hours feeling fresh
  • +Hundreds of hours of content sit inside the base game before touching expansions
  • Little hand-holding, and many players lean on online guides to make systems efficient
Atmosphere
  • +Duplicants carry personality through animation and emergent behaviour, making you care whether they survive your disasters
Presentation
  • +Cartoon art style reads cleanly even when the screen is a tangle of pipes and wires
  • +Audio layers the quiet hum of a working colony against the alarms of one about to collapse
Polish
  • +Years of post-launch work have made the base game remarkably stable
  • Heavy mod loads and late-cycle colonies can tank performance
91 / 100
Atlas
score
Steam
96%
positive
Metacritic
85
/ 100
Developer
Klei Entertainment
Released
30 Jul, 2019
Reviewed on
8 June 2026
View on Steam →