Oxygen Not Included
A sealed asteroid colony sim where oxygen, heat, germs, food, morale, and plumbing all become survival problems.
Oxygen Not Included focuses on systems engineering inside a tiny space colony. Duplicants need air, food, toilets, sleep, temperature control, and stress management, while the player builds pipes, wires, farms, machines, and automated loops to keep the base from collapsing under its own waste heat and bad planning.
Oxygen Not Included belongs in the catalog because it pushes the core colony-sim question: can a settlement keep functioning when people, resources, environment, and bad timing all collide?
Core mechanics
People pressure
Colonists, settlers, crew, or citizens create needs and priorities that turn a base into a social system.
Base planning
Rooms, storage, production, defenses, temperature, oxygen, water, or logistics decide whether the settlement works.
Failure stories
The best run is rarely perfect. Shortages, bad layouts, events, and cascading mistakes create the memory.
Long-term arc
Research, expansion, seasons, raids, diplomacy, or self-sufficiency give the colony somewhere to go.
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