If this game doesn't work on your computer, go here for help.
by Paul Schmidinger

This is a completely different type of fractal.  Mathematicians have found that they can mimic trees, clouds, mountains, just about everything in nature with fractal mathematics.  Touch or drag your cursor on this applet and watch the tree grow. 

Coolmath's Fractal Generators:   1 - 2 - 3 - 4 - 5

If you really want to get into it, you can download a free program called Fractint. I also highly recommend you check out a tutorial at Fractalarts.com if you want to be a serious fractal artist.