I came across this Google Site on 21st Century Teaching and Learning when I was looking around for some other things on the web. Sometimes what you find is more important than what you seek! This site has all sorts of resources, links, videos, etc., on all kinds of 21st Century learning. Check out the gaming section here.
THEN, in what can only be called serendipity, I clicked on the link to MIT’s Education Arcade, and found a new place to lose myself in! The entire project surrounds games – from augmented reality to engaging learning games. They’re pushing the envelope. Consider checking it out!