EA’s upcoming (amazing) game formost platforms, Spore is one kick ass game. The story is basically that of evolution. You start as a Spore, a tiny little single-cell ameba (sic?) that chases things it can eat to get bigger (same idea as Katamari Damacy) when it gets bigger you can eat bigger things. Then once you’ve become a certain size, can evole into a different animal/species.
This application is like a trial or something? Hopefully can import it into the game, once its released later this year.
Check out there Creature Creator for Win/OS x