Oxygen Not Included

Oxygen Not Included is a deep colony-simulation game where you guide a group of Duplicants to survive and thrive inside an asteroid. Master a complex ecosystem of gases, liquids, heat, and electricity as you build a self-sustaining base from scratch. Balance oxygen production, food supply, temperature control, and sanitation while optimizing power grids, plumbing, and ventilation. With robust research, intricate automation, and emergent crises, every decision shapes the fate of your colony. Its charming style hides an uncompromising simulation that rewards careful planning, clever engineering, and bold exploration.

Pause and plan your starter layout around oxygen, food, and early power. Assign jobs and priorities so Duplicants mine, build, and research without bottlenecks. Generate oxygen, recycle water, and manage heat to maintain breathable, livable rooms. Build stable power, plumbing, and ventilation networks to prevent overloads, spills, and gas leaks. Research technologies and automate systems while managing stress, morale, and disease. Explore new biomes and space with suits and rockets to secure rare materials and expand.