Your goal in this physics-based motorbike mayhem is to try not to fall off the bike as your flying down the side of a mountain at top speed. You have three bikes to choose from (each with their own special handling). In addition, new Motocross courses test how well you handle speeding across the open countryside. Press UP ARROW KEY to accelerate, press DOWN ARROW KEY to brake and go back. Use LEFT ARROW KEY to lift front wheel and RIGHT ARROW KEY to lift back wheel. Press "D" KEY to jump, "S" KEY to use hard-brake and "A" KEY to activate nitro. See in-game instructions to learn some extra moves. Good luck!