Try to get to the finish line without falling once, descending at high speed, down steep and dangerous mountains on your bike. You can knock down your rivals, this can help you get to the finish line first. Also, don't forget to improve your bike.
PC controls: Use the W\A\S\D keys or mouse clicks to control the bike. Control on a mobile device: Tap and drag the screen to control the bike. Reach the finish line to complete the level.