During week six of our ET 670 course we spent a half hour or so discussing different theories of intrinsic motivation. We observed or played different games, one of which is called "Age of Empires". Anyway, I thought the game was pretty neat, although I personally did not play or observe it. I recently noticed that a newer version called Empire Earth was just released. It is real-time strategy game that lets the player control the destiny of a fledgling civilization through periods of war. There are thousands of years of human history to choose from making it an interesting foundation for a game.