Take the time to visit John Kirriemuir's blog, SilverSprite. He is a self-employed researcher and consultant who specializes in the use of technologies to support education and learning. His blog provides good resources for educators who are interested in using games and learning, especially through "Commercial Off the Shelf" games that can be easily adapted to the curriculum.
Here is a description of Kirriemuir's blog:
"Examples of COTS (Commercial Off The Shelf) games being used for curriculum-based learning. These games are designed purely for entertainment, and not for learning or teaching. By compiling these examples, we show that such games are being used in schools and colleges by teachers and other educators, as part of curriculum-based learning."