For no reason I can think of this reminds me of Spacewar. I've no idea why, just does. This was in 1962, see: <a href="http://inventors.about.com/od/sstartinventions/a/Spacewar.htm" rel="nofollow">http://inventors.about.com/od/sstartinventions/a/Spacewar.ht...</a> which predates even me. I didn't know about it until Steven Brand wrote about it in his book described here: <a href="http://wheels.org/spacewar/stone/rolling_stone.html" rel="nofollow">http://wheels.org/spacewar/stone/rolling_stone.html</a> The book and Brand's enthusiasm is what got me involved with computers in the first place. If Schemaverse does the same for someone else then that is a very good thing. As for the pointy hair folk who mumble about too much time on someone's hands, well, sit them down and make them play!