Oxygen Not Included

A survival colony management simulator developed by Klei Entertainment. Players manage a group of duplicants stranded in an underground asteroid colony, tasked with creating a self-sustaining ecosystem for survival. Gameplay involves resource management, infrastructure construction, supplying oxygen, water, food, and energy, as well as controlling temperature, pollution, and sanitation. Each duplicant has unique traits and needs, requiring optimal task allocation. The game simulates fluid, gas, and heat physics in real time, adding depth to colony management. Oxygen Not Included is known for its high difficulty, scientific approach to mechanics, and minimalist cartoon-style graphics. Available on Windows, macOS, and Linux.