Several red and black marbles sit on a flat tray, a red vortex indicates a hole in the tray. If a marble rolls onto or over the vortex it disappears. The goal is to drop all the red marbles into the vortex, it does not matter how many black marbles are lost in the process.
Update November 2021: The puzzlescript app below is a faithful remake of the original java applet (March 2000) containing the original 15 puzzles. Use the cursor keys to tilt the tray and start the marbles rolling, the marbles roll in a straight line until they come to rest, you can then roll again.
In 2004 James Hutton of Melbourne, Australia produced a version of Marble Mazes for the Nokia phone which is still available here for download. It was originally designed to run a Series 60 phone (e.g. N-Gage, 3620, 3650, 6600, 6620, 7610, 7650, Nokia 6260, Siemens SX-1, Sendo X, Panasonic X700). In the unlikely event you still have a compatible phone you can install the 'sis' file using normal procedure as described in the literature that came with the phone. When the installer asks whether to install it to the phone memory or a memory card, you must choose the phone memory, or it won't work. See Options-About for license information.
concept & maze design - © Andrea Gilbert 2000
puzzlescript implementation - © Andrea Gilbert - 2021
implementation for Nokia phone - © James Hutton 2004