On each level, your job is to move a marble through a 3-D maze to a goal line, all the while trying to keep the marble on track. If your marble falls off the track or if it is gobbled by a Marble Muncher, you must wait a moment or two until another marble appears. You've got an unlimited number of marbles, but speed is of the essence, so you should try to keep a single marble intact as long as possible.