This article is from 2005, but there is some interesting material reviewed. Of course, the article mentions Jim Gee. One part that I found interesting was where Jim Brazell, a consulting analyst at the Digital Media Collaboratory, basically says that the only way someone can make an effective simulation game is to understanding thoroughly that which is being simulated. Thus, creation of games has the "potential to lead to new knowledge and new ways to do things through emergent behavior." This is the first time I've seen such a clear description of how game design can be used to build knowledge.
Oct 26, 2012 and Nov 15, 2012 - I created this webpage as part of my Oct 26, 2012 Metro State University's Teaching and Learning with Technology Conference Workshop titled: "Gamify the Classroom," and my Nov 15, 2012 webinar presentation for the G.A.M.E. (Gamers Advancing Meaningful Education" webinar series:
"It Takes a Guild Episode 4"
http://youtu.be/UTva4mpLZBI