Try to step in a taxi driver's shoes. Your task is to look for passengers and transport them to their destination. All destinations and the possible locations of the passengers are flagged on your map.
While you are looking for passengers, time stops and you can ride slowly through the maze of the city. But once you take a passenger, the countdown starts and you must be able to take the passenger to his destination on time.
The faster you get there, the more money you will earn. Do not forget to check your gasoline sensor and drive every now and then to the nearest gas station. And of course, try to drive carefully and do not crash into others. Good luck!