Players work to maintain various elements of the city, including its budget, health, employment, and pollution levels. Players engage in urban planning by controlling zoning, road placement, taxation, public services, and public transportation of an area. The game is a single-player open-ended city-building simulation. City-building, construction and management simulationĬities: Skylines is a 2015 city-building game developed by Colossal Order and published by Paradox Interactive.