Cosmopolis Inc. is a sci fi city management game where you can build futuristic cities in asteroids, exotic planets and even abandoned space megastructures. Build a prosper economy, solve conflicts between the human and alien populations and defend your city from pirate and alien attacks.
While the prototype is pretty early you can build new buildings (others are locked until I can add special behaviours to them) and start a basic economy (remember that a building will only produce goods and resources if it has employees). If you are short of people press F1 to spawn more.