A puzzle site featuring a new puzzle format each weekday for each month. Puzzles are fun, educational, entertaining and are also printable.

Offers riddles, puzzles, optical illusions, and magic tricks.

Brain teasers, puzzles, riddles, games and optical illusions.

A collection of math, logic, and word puzzles.

Contains a huge collection of user submitted and rated brain teasers and riddles. It also has a lively message board and some unique multiplayer games.

Weekly competition to solve original puzzles, riddles, and brain teasers in the least amount of time.

Scans from a book of puzzles, includes English translations.

A community based site with competitions, challenges, awards, a help centre, forums and games.

Challenge your mind with free online riddles/puzzles, logic games, brain teasers and view optical illusions.

Riddles, illusions, puzzles, and brain teasers.

A fun site for puzzles, free games, treasure hunts, cryptograms and intrigues. Prizes for winners.

Some real mind benders here

Riddles, brainteasers, cryptograms, anagrams, and logic puzzles. Compete in eight new contests monthly.

Challenging word games published in newspapers.

A beautifully illustrated collection of puzzles, riddles, and paradoxes. Features a changing "unsolved puzzle" plus three years worth of previous puzzles.