The object of Snowball Run is to beat all 75 levels spread over three
stages; beginner, intermediate, and advanced. There is a time limit to
beat; points are awarded based on how far under it you are. There are
also fish to collect for points. You are a penguin riding a snowball
in what seems to be some sort of amusement park in the sky. Visually,
there are elephant balloons, roller coasters, merry-go-rounds, and
candy stores. Gameplay hazards include ramps, holes and barriers. If
you hit a barrier hard and do not quickly adjust your course, it is
possible to fall out of a level, losing a life automatically. The lack
of direct contact between yourself and the surface makes it harder to
change direction quickly. (MobyGames)

The D/L is a hybrid Mac/PC disc image

Compatibility
Architecture: PPC

Mac OS X 10.2.4
G3/450 MHz
128 MB RAM
ATI Rage 128 graphics