revised : January 2015

Brain Food
http://www.rinkworks.com/brainfood/p/riddles1.shtml

Card Games
http://www.pagat.com/

Carré d'As (jeux mathématiques)
http://carredas.free.fr

Chessmaster
http://www.chessmaster.com

Education Place (educational games)
http://www.eduplace.com/kids/games/

Good Riddles Now
http://goodriddlesnow.com/good-riddles

Internet Chess Club
http://www.chessclub.com

iWin (Free Download Games)
http://www.iwin.com/

Learning Games for Kids
http://www.learninggamesforkids.com/

Math Playground
http://www.mathplayground.com/logicgames.html

MUD Directory  (Multi Users Dungeons)
http://www.mudconnect.com

Play to Learn
http://top5onlinecolleges.org/gamification/

Puzzles, Games, and Gift Ideas for All Ages
http://www.executivegiftshoppe.com/puzzlesgamesandgiftideasforallages.html

Riddlenut
http://www.riddlenut.com/

Riddles
http://www.riddles.com/

Riddles (compiled by William Wu)
http://www.ocf.berkeley.edu/~wwu/riddles/intro.shtml

Traditional Games
http://www.tradgames.org.uk/

Yahoo Games
https://yahoogames.tumblr.com/