This might be late for some, but the MindTrek conference, a small Scandinavian conference gem on “social media, ambient/ubiquitous media, games, media management and open source”, running September 28-30 2011, has just extended its deadline for full and short papers to June 12. This year’s games track features “gamification, funware and playful designs” as one topic in the call this year, so this might be something. All proceedings got into the ACM Digital Library, with additional edited books and journal special issues for selected papers.
You can find the Call for Papers here, general information here and key dates here.