Each time you play, the snowball begins at the top of the screen and rolls towards the bottom. As you tilt back and forth, the snowball grows bigger. Run over animals, presents, elves, Santa Claus and other goodies (you can even fly off ramps to hit airplanes) and you'll earn points. Smash into houses, rocks and trees and your snowball decreases in size. Land in a puddle of water and it's game over.