If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Perform sick tricks while in the air! Do as many tricks as you can before time runs out.
Left / Right Arrow Keys - turn.
Spacebar - Crouch / Jump.
Down Arrow Key - Perform 180 tricks.
F + Arrow Key - Flip Trick.
G + Arrow Key - Grab Trick.