Puzzle Contest Center Riddles, brainteasers, cryptograms, anagrams, and logic puzzles. Compete in eight new contests monthly.
The Grey Labyrinth A beautifully illustrated collection of puzzles, riddles, and paradoxes. Features a changing "unsolved puzzle" plus three years worth of previous puzzles.
Confusion Its a challenge to reach the end of this puzzle maze.
Brain Juice An assortment of entertaining logic puzzles with solutions and indicated levels of difficulties.
BrainVista Collection of solved and unsolved brain teasers.
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.
The Stone an online mystery game. Hours of clever puzzles and riddles. Puzzles challenge the mind of serious and amateur players worldwide.
Braingle - Brain Teasers & Riddles 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.
Planetarium An on-line puzzle story in twelve weekly installments.
iRIDDLER Challenge your mind with free online riddles/puzzles, logic games, brain teasers and view optical illusions.
Say What You See! Collection of visual brain teasers which can be solved by saying what you see.
Alphabet Cartoon Puzzles Letters of the alphabet are used as structural components for drawings of figures and faces. Spelling tips lead to the solution of the puzzles.
BrainBashers Brain teasers, puzzles, riddles, games and optical illusions.
Puzzles Without Rules Free, updated, original abstract puzzles for advanced puzzle-solvesr. Includes current unsolved puzzle and archive with hints and solutions.
Zuzzle Puzzles Collection of puzzles including riddles, logic puzzles and sequential puzzles.