PixureSaver for Mac

From Old Jewel Software:

PixureSaver is a screensaver that shows the power of genetic algorithms to accomplish trivial tasks. In particular, PixureSaver will show an approximation of the real appearance of an image, and will gradually over time produce better and better approximations of that image. This is done via a simple genetic algorithm that involves an artificial organism called a Pixure (Pixel Creature). A pixel creature is an organism that can reproduce, can compete with its neighbors, and can display a color. Over time, Pixures compete to become better at approximating the image they're supposed to represent, so what started out as static slowly starts to look like something more interesting. The source for PixureSaver is also available at http://www.old-jewel.com/opensource/page6/files/Pixure.zip