Hit the play button and after a short intro you will be represented to a real rail of darkness. Press right or D key to accelerate or left arrow and A key in order to brake. As you go down to the rail of darkness, do not forget to grab the gold stones as they are needed for further upgrade in the game. After each try you will get special diamonds for your speed, jump and brake usage, life and ammo. If you are a noob, the first few tries might seems hard but as game experts say, it is easy to win all the three levels.