Earn points and compete against other racers as you get huge air, land sick tricks, and break your bike crashing. Unlock tricks and powerful bikes if you place high enough on the levels. The points you earn for being an awesome rider allow you to upgrade your bikes. You can upgrade your equipment, speed, acceleration, rotation, balance, agility, and nitro boost. Each bike has special tricks so collect them all and stock your garage until it is full.
See instructions in the game.