Spore is a game by Wil Wright, the same guy who made Sim City and The Sims.
The game allows players to evolve from single-celled organisms to sprawling civilization. Pretty heady, huh? Although this game hasn't been released yet,
(and I doubt it will become vaporware), I think it merits our attention.
What science teacher wouldn't want to use this game to explore how organisms adapt to their environment and grow?
Cool stuff.