The aim of the game is to drive cars into garages.
If the car enters the garage of the same color, you get one point. If the car color differs from the color of the garage, the car leaves garage. Cars try to leave the garage and if the exit is blocked then a queue grows. The game ends when the queue length is greater than the number of cars on the map. To manage traffic you can change signs on crossroads and set time of traffic lights.
There is advertisement in the application (it's not a virus!). If you hate ads then download the paid version.