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.