Applets
You'll need version 1.4.2 of the J2SE Java Runtime Environment (JRE) for these applets to work. If you don't already have it installed, please take the trouble to download it. It's worth it!
Turbulence Viewer
Turbulence is basically Perlin Noise at different frequencies, all added together.Tetris
Rotate the pieces, knock out the rows, get completely addicted. You know the drill!