Very cool coin-op arcade game of the late 1980s, made by Atari. It had some of the sharpest graphics of the time. Using a trackball, the goal was to manuever your marble through a 3D maze to the finish line before the time expired. The effort was hampered by precipitous dropoffs, steel marbles trying to ram you off course, marble-eating worms, and tricky surfaces like ice. It was a potential two player game where it was a race to the finish, and you were penalized if your competitor scrolled the screen before you could keep up on the other end. There were several levels, including one where you had to roll your marbles uphill, and another floating in space.

A few ports for personal computers were made by Electronic Arts, the best of which seemed to be the Amiga version. The Commodore 64 version had a secret level called the Water Maze which you could get to by being on the leftmost bottom platform of the first level at a certain time (I think 13 seconds). The Water Maze looked cool but it was mistake and you lost instantly, forcing you to wait for the 1541 drive to slowly reload the game.