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In Sim Taxi, the main objective of the game is to look for passengers and deliver them to their destinations as quickly as you possibly can but without damaging your car. A phone operator will help you locate customers but also you don't need to worry where the locations are because there's a compass on the top left to guide you.
Drive Around = Arrow keys
Music On / Off = M or N Keys
Radio = R Key
Switch Radio Stations = 1,2,3 Keys