Great fun! An e-toy that lets you create slopes and
loops, etc. and then run a little guy down on his sled.
That will make more sense once you've seen it. Thanks
to Kendall Smith for mentioning this site to me.
Karl Hoernell is a programmer in Sweden who writes some very nice Java games. While
that would be worth knowing just by itself, he makes it even
better by putting them up on a beautiful website with
lots of background commentary regarding game design and technical
problems and solutions.