Edward Castronova’s MMO, Arden, is being released today. It’s available to play, download, and modify as you wish.
His new book, Exodus to the Virtual World, is also now available. I’ve been flipping through a copy, and it looks pretty interesting. Whether or not you agree with the thesis — that game mechanics are going to increasingly influence real-world governance and society — there’s a lot of fascinating research packed into its pages.