Oxygen Not Included
Indie
Simulation
Single-player
Steam Trading Cards
Family Sharing

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.

Developers: Klei Entertainment
Publishers: Klei Entertainment
Release Date: Jul 30, 2019
Price (USD): $7.49
Current Players: 13k

Links:  Steam Store  SteamDB

Overwhelmingly Positive(96%)
deep gameplay
high replayability
charming art
strategic planning
engaging mechanics
complex systems
steep learning
external guides
duplicant humor
steep learning curve
AI limitations
performance issues
micromanagement
punishing mechanics
The general sentiment towards Oxygen Not Included is overwhelmingly positive, with players appreciating its deep and rewarding gameplay and strategic complexity. However, some express Mixed feelings about the steep learning curve and the need for external guides to fully comprehend the game. The pathing and AI limitations of duplicants are a frequent source of frustration, but many players continue to recommend the game for its replayability and charming art style. It is well-loved for its engaging resource management systems and the satisfaction of overcoming its considerable challenges.

Positive Points

  • Oxygen Not Included offers a deep and engaging gameplay experience with complex resource management and simulation mechanics that many players find rewarding.
  • The game has a steep learning curve that encourages players to experiment and learn from their mistakes, leading to a sense of accomplishment when challenges are overcome.
  • There is high replayability due to randomly generated worlds, diverse playthrough strategies, and ongoing updates from developers that keep the game fresh and interesting.
  • The game has appealing graphics and a charming art style, providing an inviting atmosphere despite the challenging gameplay.
  • Negative Points

  • Many players find the game has a steep learning curve, which can be frustrating and overwhelming without external guides and tutorials.
  • The pathing and AI of duplicants (colonists) can be problematic, often leading to unnecessary deaths and requiring significant micromanagement.
  • Some players have reported performance issues, particularly as colonies grow larger, leading to lag and decreased frame rates.
  • Mixed Points

  • Players have mixed feelings about the game's complexity; some appreciate the depth of systems like thermodynamics, whereas others find it too challenging or convoluted.
  • While many praise the game's realism in managing resources, others find it too punishing and feel that some mechanics require excessive micromanagement.
  • Common Themes

  • The game requires significant problem-solving and strategic planning skills, appealing to those who enjoy complex systems and simulations.
  • Many players enjoy the humor and personality of the duplicants, which adds a light-hearted touch to the sometimes intense gameplay.
  • The community and developers are active, providing support, updates, and mods to enhance the gaming experience.
  • Updated 6/13/2025, 12:02:04 AM UTC