A beautifully illustrated collection of puzzles, riddles, and paradoxes. Features a changing "unsolved puzzle" plus three years worth of previous puzzles.
Collection of visual brain teasers which can be solved by saying what you see.
Over 60 brain teasers to enhance your mind.
Challenge your mind with free online riddles/puzzles, logic games, brain teasers and view optical illusions.
Collection of puzzles including riddles, logic puzzles and sequential puzzles.
Word puzzles, riddles, rebuses, brain teasers, mazes, cliparts and pictures.
Recreations for active minds including games, puzzles, math, words, images, books, software and web guide.
Collection of logic problems, logic puzzles and cryptograms with answers. Graded levels of difficulty including some especially for kids.
Huge collection of optical illusions, hidden imagery, ambiguous art and upside downs.
An archive of many popular puzzles from the rec.puzzles newsgroup.
A collection of logic puzzles, riddles and brain teasers.
Free, updated, original abstract puzzles for advanced puzzle-solvers. Includes current unsolved puzzle and archive with hints and solutions.
Riddles, brainteasers, cryptograms, anagrams, and logic puzzles. Compete in eight new contests monthly.
Some real mind benders here.
Have fun with games, puzzles, brainteasers and humor as you learn about logic and analysis.
An on-line puzzle story in twelve weekly installments.
Crosswords and other word puzzles and games, samples; monthly puzzle magazine; 800,000 word searchable list.
Riddles, illusions, puzzles, and brain teasers.
A community based site with competitions, challenges, awards, a help centre, forums and games.
A collection of brain teasers and riddles with a guess button.