Games for learning
From the excellent TechLearning blog, this selection of 40 Sites for Educational Games, not by any means all of them intended for language learning.
Specifically for ELT, there's the excellent Digital Play blog (Graham Stanley and Kyle Mawer) as well as the prize-winning book of the same title.
I'm not a big games-in-class player myself, though it's always been my secret wish to have a DoS tell me "I want you to teach this teens class; there's no coursebook, but you do have 15 copies of Age of Empires…"
Just to see if it would work, you understand 🙂 !
See also More on digital games