Oxygen Not Included

Reviewed by admin on Aug. 1, 2025, 7:10 p.m.

Screenshot of Oxygen Not Included showing the main game interface
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Review Details

Description

Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.


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Review

Oxygen Not Included is a brilliant survival simulation game developed by Klei Entertainment, renowned for their unique art style and deep gameplay systems. Set in the depths of an alien asteroid, the game tasks you with managing a colony of “duplicants” as they struggle to build a sustainable underground home. At first glance, the charming 2D artwork and quirky animations might deceive players into expecting a lighthearted experience. However, beneath the colorful exterior lies one of the most complex and unforgiving management games in recent memory.

The core gameplay loop revolves around resource management: you must supply your duplicants with food, clean water, warmth, and most critically, oxygen. As your colony expands, balancing these needs becomes exponentially more difficult. Randomly generated maps ensure every playthrough requires fresh strategies. The complexity grows with every passing cycle, with new challenges like air pollution, disease, and environmental hazards cropping up precisely when you think you’ve gained control. Each system, from plumbing to electrical circuits, interlocks with the others in clever ways, making every colony feel like a living, breathing machine on the edge of collapse.

One of the standout features of Oxygen Not Included is its depth of mechanical simulation. Fluid dynamics, gas exchange, and heat transfer are all modeled in impressive detail. This realistic simulation demands a scientific approach to problem-solving, and the game provides ample tools and data overlays to monitor every aspect of your base. Seasoned players will delight in designing efficient layouts or “Rube Goldberg” systems to automate the daily grind, from lavatories to power plants. For newcomers, though, the sheer magnitude of information can be intimidating, resulting in a steep initial learning curve.

Oxygen Not Included is not solely about abstract numbers and intricate pipes, though. The duplicants themselves provide much of the game's charm and unpredictability. Each is procedurally generated with unique strengths, weaknesses, and personalities that influence both colony productivity and morale. Watching them interact adds a layer of organic storytelling to the otherwise clinical management. Emergencies can spiral into chaos, and moments of triumph often come from last-second improvisation rather than meticulous planning.

The game’s presentation perfectly complements its systems. The hand-drawn visuals are both whimsical and clear, making it readable at a glance even with dozens of things happening onscreen. The sound design, with its playful pings, alarms, and calming music, strikes a balance between urgency and approachability. Frequent updates and an active modding community ensure there’s always something new to discover for both veterans and beginners.

However, its complexity may not appeal to everyone. Players looking for a more relaxed experience might find the relentless march of entropy and resource depletion overwhelming. The interface, while robust, can get crowded, making advanced management a challenge without pausing to assess. There is also a degree of repetition in late-game play, where optimization takes precedence over exploration.

In conclusion, Oxygen Not Included stands out as one of the most rewarding and challenging colony management simulations available. Its combination of scientific depth, charming presentation, and emergent stories creates a uniquely compelling experience for fans of strategy and survival games. Provided you’re willing to invest the time to master its systems, few games offer as rich and satisfying a journey from chaos to order beneath the surface of the stars.


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Score: 9.0

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