OPARTICA - uses the free Shockwave Plugin to display its optical art. The file is 250K and runs very smoothly on a 1 GHZ machine. For lesser processors you can reduce the quality to medium by right clicking on Opartica while it is running. We have also provided links to smaller versions although the download time is no different. There is a full browser version that stretches with your browser and a zip file that lets you use Opartica from your own computer.
If you see flashing colors on the right then you need to upgrade your Flash to version 5 or higher. Remember on the smaller ones, you can zoom in to see controls. Have fun!