Phun - a remarkable science toy

This is hard to describe; you really need to view the video to comprehend how this works (the video is a movie of someone playing with the toy). It's "virtually" a 2-D physics laboratory that looks to be the cybersuccessor to Lincoln Logs, the Erector Set, and Lego bricks.

It apparently can be downloaded for free (!!) but I haven't been able to do so because there's no Macintosh version. Perhaps some reader of this blog can download it, play with it, and post comments here.