Players build a space station on a flat plane using tetromino-shaped floors that represent rooms. Rectangular workers generate the resources to build more spaces by working in these rooms. The workers occasionally must defend the base against attackers, who come in waves of increasing difficulty.The player can have the workers research four TMA-1-style monoliths for additional shield, speed, and generator upgrades. Rooms are used for special purposes: mineral mining (extractors), growing food (gardens), cooking it (kitchens), making workers (quarters), and creating power (reactors). The goal is to flourish and protect the station's inhabitants, but there are three concrete objectives: research all four monoliths, survive 28 waves, and research all monoliths in under 45 minutes. The game ends if all workers are killed. There is a tutorial, but no story. The player is not specifically told about the endgame goals.