Ride over the icy terrain collecting bubbles while avoiding various hazzards.
The push bike can only advance, you can not back pedal so remembering the best route is part of the challenge.
You can influence your altitude over thermals with the up and down arrow keys.
Highscores are in order of the most bubbles collected, with the least deaths, in the shortest time.
Jump is 'Up arrow' OR 'Spacebar'.