Not much to say here, as there's a description in the file itself.
This evolved out of my Dynamic, Interactive Creature-Experiment.
You'd better read the instructions in the file at first if you want to know whats going on^^

Everytime you start this it'll be different. You'll probably never get two identical creatures!

The creatures you have at the beginning are usually quite slow and need some time to reach the goal (touching the right, then the left and then the right border again), but after 2-3 rounds there'll probably some quite fast guys.

Try different terrain-types (drag the grey dots to change the surface)! Creatures that live on a flat surface usually look different from the ones that have to climb a few mountains.
Though, it's better to let them evolve on a flat surface for some time before creating higher hills; at the beginning they are usually not that fit for steep slopes.

If you want to, you can also manipulate the simulation by deleting creatures (just click on their body). You shouldn't delete all of them, though^^

Have fun watching them!

Flash 8 required!
Zoom in to play.
_{Inspired by something I saw on a flash website years ago, but can't find it anymore :/}