An update of The Towers Of Hanoi, this time in full 3D. Requires Windows with .NET Framework 3.5.
I updated this yet again on 12/19 to include collision detection during the drag and drop part, and to include the source, if developers would like to review it. It should be fairly instructive for some.
(Note: I used Charles Petzold's libraries to generate the disks and pegs, and I didn't include his source code, but it's available for download on Mr. Petzold's site, at http://www.charlespetzold.com/3d.)