Library Game Lab of Syracuse http://gamelab.syr.edu/publications/
In addition to providing ongoing research on games in all kinds of libraries, this site also has many articles of recent research.

Game Worlds For Learning Margaret Corbit September/October 2005
http://www.ala.org/ala/aasl/aaslpubsandjournals/kqweb/kqarchives/volume34/341corbit.cfm

http://www.vlearn3d.org/

Education Arcade http://www.educationarcade.org/ - Games that promote learning
divide into 4 areas
Augmented reality games - Simulation games
iCue - help evaluate web resources
Labyrinth - new online puzzle game - more about mathematics
Revolution - Learn about the American Revolution
Supercharged! - more about physics and science

QuestAtlantis http://inkido.indiana.edu/atlantis/ - Virtual World

Active World Software http://www.activeworlds.com/

Serious Games http://www.seriousgames.org/index2.html

Game Research http://www.game-research.com/

Lib Success Wiki http://www.libsuccess.org/index.php?title=Gaming_Resources

Escapist - magazine for games http://www.escapistmagazine.com/
http://www.escapistmagazine.com/articles/view/issues/issue_121/2575-Ten-Myths-About-Serious-Games

Slide share on Serious Games for Novice Librarian http://www.slideshare.net/iil07/serious-games-presentation-web

Research Quest - Educational Game Blog
HardPlay http://www.ucalgary.ca/hardplay/