Scriptbots: Evolutionary Artificial Life Simulation of Predator-Prey dynamics

The clip showing hunting pack behavior, http://www.youtube.com/watch?&v=RjweUYtpNq4&t=3m17s, really makes them come alive, almost like they'll run off the page. Chilling. Reminds me of George Martin's "Sandkings" (don't go to Wikipedia, read the full story).

Since this is open source, i think this could be a good start to build a way more complex artificial world, like three dimensions, similar earth conditions (temperature, wind, terrain specifications etc.)

I think the main point to build such an artificial world is to give a start of the life of a creature, which surprises it's own creators with it's behaviors.

Very neat; reminds me of http://swimbots.com, which focuses more on locomotion and the evolution of locomotion. But still, nice.