The Flash file is the wonderful work of Jared at Levitated. He offers the files as Open Source - meaning you can download the code for free. The hope is that people can learn and expand their knowledge, and possibly create something more grand and amazing which is shared.

This is how Jared describes the file at the levLeggedCreatures page:

"A collection of small, one legged swimming automatons which combine on collision. CLICK ANYWHERE on the stage to create a new, one-legged swimming organism. There is a maximum of 11 concurrent organisms on stage.

An organism moves about using the kicking of it's leg (or legs). Each kick produces an impulse force and a bit of faked angular momentum. Both the force and angular momentum translate into velocities which are gradually reduced with friction.

Upon collision, the larger organism will consume the smaller, aggregating it's leg structure. The most interesting result of this process is the formation of multi-legged organisms. Since the position of the aggregated legs depends upon the angle of collision, each multi-legged organism is unique. Some leg arrangements allow enhanced locomotion while others produce nonsensical movement.

Organisms with more than 4 legs will eventually swim off the stage in search of nirvana (actually, they're ugly, so I remove them when no one is looking)."

Here's the link to all his creations. It is definitly worth a look.

Finally, a special thank you to a good friend of infinite talent, who helped me convert the file from .fla to .swf - Krista @ Mad Martyr Designs. Without her help, I would not have been able to make this page work. Visit her site, hire her and pay her LOTS of money. It will make me very happy.