You are the Major of the city and your role is build good transportation network.
There are houses and factories in different colors on the map. People living in a house works in the factory of the same color. They want to get to the work in the morning and go back in the evening.
You have to connect houses and factories with a road. For every car that hits the target you get some money, that you can spend to upgrade roads, build traffic lights, cut down trees or buy an ambulance.
Your city grows over time. When the game ends, you are scored in four categories: ecology, employment, time and health care.