The Grey Labyrinth A beautifully illustrated collection of puzzles, riddles, and paradoxes. Features a changing "unsolved puzzle" plus three years worth of previous puzzles. http://www.greylabyrinth.com/ Greylabyrinth.com~Site InfoWhoisTrace RouteRBL Check
Brain Juice An assortment of entertaining logic puzzles with solutions and indicated levels of difficulties. http://www.brainj.net/puzzleindex.php Brainj.net~Site InfoWhoisTrace RouteRBL Check
A Game A Day A puzzle site featuring a new puzzle format each weekday for each month. Puzzles are fun, educational, entertaining and are also printable. http://www.agameaday.com Agameaday.com~Site InfoWhoisTrace RouteRBL Check
The Stone an online mystery game. Hours of clever puzzles and riddles. Puzzles challenge the mind of serious and amateur players worldwide. http://www.thestone.com Thestone.com~Site InfoWhoisTrace RouteRBL Check
Braingle Includes a huge collection of user submitted and rated brain teasers and riddles. It also has a message board and some unique multi-player games. http://www.braingle.com/ Braingle.com~Site InfoWhoisTrace RouteRBL Check