Prongo
Games categorized by grade level!
http://www.prongo.com/games/
Toy Theater
Learn, create, play
http://www.toytheater.com
Fuel the Brain
Game for all subjects
http://www.fuelthebrain.com
Pauly’s Playhouse
Games galore!
http://www.paulysplayhouse.com/paulys_playhouse/game_page/game.html
Game Goo
More great games!
http://www.earobics.com/gamegoo/gooey.html