First of all, there’s the 3D meta world about Shakespeare that it’s giving a quarter million to Ed Castronova to develop:

Shakespeare coming to a virtual world | CNET News.com
On Thursday, the MacArthur Foundation is [announced] a $240,000 grant to Castronova and his team to build “Arden: The World of Shakespeare,” a massively multiplayer online game, or MMO, built entirely around the plays of the Bard.

But that’s the tip of the icebert. The MacArthur Foundation has gone whole hog on digital learning (and it’s a $50 million hog), with a significant focus on virtual environments and games as an ‘ecology.‘