Gamertech

If you havent seen it yet, check out the preview video for this new game spore.
http://video.google.com/videoplay?docid=8372603330420559198&q=spore

you start out as a cellular level life form, and grow and evolve to become an animal, then you create villages and then cities and then you create armys to take over other cities and then take continents until you control the world. Then you can leave the planet and terraform other worlds, or try to find life and either ally or conquer them.