HEATKEYS

eyetricks.com provides a wide selection of online optical illusions and other mind teasing oddities.

Free online and downloadable games! Play arcade games, board games, card games, puzzle games and other free games at Yahoo! Games.

Brain teasers, puzzles, online games, optical illusions and jigsaws.

The all-things-gifted site for parents and educators of gifted children, including articles and research, books, organizations, on-line support groups, academic programs, and lots more!

Blog of Unusual and Funny News Worldwide

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A family-friendly collection of optical illusions, brain teasers, fun riddles, tactile tricks, mental games, and unusual self-deceptions.

An educational portal with free resources for teachers and their classrooms as well as students and parents.

Fun and exciting site with free addicting online games, optical illusions, puzzles, mind games, strategy games, flash games, and much more. This is a great time killer site, just don

Think faster, focus better, and remember more with BrainHQ—clinically proven brain training exercises brought to you by Posit Science.

World-Mysteries.com. Explore with us lost civilizations, ancient ruins, sacred writings, unexplained artifacts, and science mysteries. Introduced are alternative theories, popular authors, books, and resources on the Internet.

User submitted and ranked brain teasers, riddles, quizzes, trivia, logic problems and mind puzzles. Free online games and message boards.