| The Grey Labyrinth http://www.greylabyrinth.com/ A beautifully illustrated collection of puzzles, riddles, and paradoxes. Features a changing "unsolved puzzle" plus three years worth of previous puzzles. | |
| Say What You See! http://www.eyetricks.com/swys/swys0101.htm Collection of visual brain teasers which can be solved by saying what you see. | |
| PedagoNet Brainers http://www.pedagonet.com/brain/brainers.html Over 60 brain teasers to enhance your mind. | |
| iRIDDLER http://www.iriddler.com/ Challenge your mind with free online riddles/puzzles, logic games, brain teasers and view optical illusions. | |
| Zuzzle Puzzles http://www.zuzzle.com/ Collection of puzzles including riddles, logic puzzles and sequential puzzles. | |
| Word Juxtapoz http://www.wordjuxtapoz.com/ Word puzzles, riddles, rebuses, brain teasers, mazes, cliparts and pictures. | |
| Thinks.com http://www.thinks.com/ Recreations for active minds including games, puzzles, math, words, images, books, software and web guide. | |
| The Logic Zone http://www.thelogiczone.plus.com/ Collection of logic problems, logic puzzles and cryptograms with answers. Graded levels of difficulty including some especially for kids. | |
| The Amazing Art Site http://members.multimania.nl/amazingart/ Huge collection of optical illusions, hidden imagery, ambiguous art and upside downs. | |
| Rec.puzzles Archive http://rec-puzzles.org/ An archive of many popular puzzles from the rec.puzzles newsgroup. | |
| Pzzls http://www.pzzls.com/ A collection of logic puzzles, riddles and brain teasers. | |
| Puzzles Without Rules http://puzzleswithoutrules.blogspot.com/ Free, updated, original abstract puzzles for advanced puzzle-solvers. Includes current unsolved puzzle and archive with hints and solutions. | |
| Puzzle Contest Center http://www.contestcen.com/ Riddles, brainteasers, cryptograms, anagrams, and logic puzzles. Compete in eight new contests monthly. | |
| Puzzability http://www.puzzability.com/ Some real mind benders here. | |
| Professor Tangent http://www.professortangent.org/ Have fun with games, puzzles, brainteasers and humor as you learn about logic and analysis. | |
| Planetarium http://www.beholder.co.uk/planetarium An on-line puzzle story in twelve weekly installments. | |
| National Puzzlers' League http://www.puzzlers.org/ Crosswords and other word puzzles and games, samples; monthly puzzle magazine; 800,000 word searchable list. | |
| Just Riddles and More http://www.justriddlesandmore.com/ Riddles, illusions, puzzles, and brain teasers. | |
| Had To Play On http://www.hadtoplayon.com/ A community based site with competitions, challenges, awards, a help centre, forums and games. | |
| Gray Watson's Brain Teasers and Riddles http://256.com/gray/teasers/ A collection of brain teasers and riddles with a guess button. | |
