I am fascinated with the power of student immersion in virtual worlds that have true educational value. This video clip comes from a future "game" called Ancient Spaces. According to the April issue of Wired magazine, Ancient Spaces:

...is an online 3-D environment that re-creates past civilizations through wiki-like mass development. [Players in this massively multiplayer online game] can earn points by contributing historically accurate structures and objects or by completing missions.

I can't wait to see it in action. I imagine, given the fact that it is a MMO game, that there will be a large component of real-time collaboration among players (much like River City).