Cryptograms 24
Mathematical 15
Nonograms 6
Optical Illusions 27
Riddles 31
Sudoku 80
| | Puzzle - Video Games, Games 980
Games and Puzzles - Recreations, Math, Science 74
 Able2KnowAble2Know
 Message board of user submitted riddles and brain teasers.
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Abnorm's ConundrumsAbnorm's Conundrums
 Easy, medium and difficult brain teasers without answers.
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All-Star Puzzles: Logic ProblemsAll-Star Puzzles: Logic Problems
 Collection of logic problems to solve. Printable.
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The Amazing Art SiteThe Amazing Art Site
 Huge collection of optical illusions, hidden imagery, ambiguous art and upside downs.
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Archimedes' LaboratoryArchimedes' Laboratory
 Recreational mathematics including puzzles to make and solve, tessellations, geometric puzzles, optical illusions, and curiosities.
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AVAVAVAV
 Collection of optical illusions, brain teasers and riddles.
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Bill's Brain TeasersBill's Brain Teasers
 A collection of visual and linguistic riddles.
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Brain JuiceBrain Juice
 An assortment of entertaining logic puzzles with solutions and indicated levels of difficulties.
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Brain Teaser WorldBrain Teaser World
 Offers riddles, puzzles, optical illusions, and magic tricks.
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Brain TeasersBrain Teasers
 Brain teasers, riddles, logic puzzles and problems, paradoxes, optical illusions, IQ tests and logical games.
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BrainBallBrainBall
 A daily brain puzzle with 10 different tasks and a variety of statistics on your performance.
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BrainBashersBrainBashers
 Brain teasers, puzzles, riddles, games and optical illusions.
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BrainBoggled.comBrainBoggled.com
 A collection of math, logic, and word puzzles.
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Braingle - Brain Teasers & RiddlesBraingle - Brain Teasers & Riddles
 Includes a huge collection of user submitted and rated brain teasers and riddles. It also has a lively message board and some unique multiplayer games.
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BrainVistaBrainVista
 Collection of solved and unsolved brain teasers.
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ConfusionConfusion
 It's a challenge to reach the end of this puzzle maze.
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Curiouser.co.ukCuriouser.co.uk
 Paradoxes, puzzles, games, optical illusions, poetry, curious facts, and quotations.
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EluzionsEluzions
 Featuring all sorts of games, optical illusions, puzzles, trivia, mazes, and magic tricks. Suitable for all ages.
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Eyetricks: Brain TeasersEyetricks: Brain Teasers
 Weekly puzzles and archives.
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A Game A DayA 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.
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Gray Watson's Brain Teasers and RiddlesGray Watson's Brain Teasers and Riddles
 A collection of brain teasers and riddles with a guess button.
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The Grey LabyrinthThe Grey Labyrinth
 A beautifully illustrated collection of puzzles, riddles, and paradoxes. Features a changing "unsolved puzzle" plus three years worth of previous puzzles.
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Had To Play OnHad To Play On
 A community based site with competitions, challenges, awards, a help centre, forums and games.
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iRIDDLERiRIDDLER
 Challenge your mind with free online riddles/puzzles, logic games, brain teasers and view optical illusions.
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Just Riddles and MoreJust Riddles and More
 Riddles, illusions, puzzles, and brain teasers.
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The Logic ZoneThe Logic Zone
 Collection of problems with answers, logic puzzles and cryptograms.
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National Puzzlers' LeagueNational Puzzlers' League
 Crosswords and other word puzzles and games, samples; monthly puzzle magazine; 800,000 word searchable list.
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PedagoNet BrainersPedagoNet Brainers
 Over 60 brain teasers to enhance your mind.
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PlanetariumPlanetarium
 An on-line puzzle story in twelve weekly installments.
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Professor TangentProfessor Tangent
 Have fun with games, puzzles, brainteasers and humor as you learn about logic and analysis.
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PuzzabilityPuzzability
 Some real mind benders here.
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Puzzle Contest CenterPuzzle Contest Center
 Riddles, brainteasers, cryptograms, anagrams, and logic puzzles. Compete in eight new contests monthly.
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A Puzzlemakers SiteA Puzzlemakers Site
 Puzzles of all descriptions.
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Puzzles Without RulesPuzzles Without Rules
 Free, updated, original abstract puzzles for advanced puzzle-solvers. Includes current unsolved puzzle and archive with hints and solutions.
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PzzlsPzzls
 A collection of logic puzzles, riddles and brain teasers.
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Rec.puzzles ArchiveRec.puzzles Archive
 An archive of many popular puzzles from the rec.puzzles newsgroup.
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Roh'El's RiddlesRoh'El's Riddles
 Offers brainteasers rated by difficulty and category.
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Say What You See!Say What You See!
 Collection of visual brain teasers which can be solved by saying what you see.
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Sesquip Word GamesSesquip Word Games
 Challenging word games published in newspapers.
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The StoneThe Stone
 an online mystery game. Hours of clever puzzles and riddles. Puzzles challenge the mind of serious and amateur players worldwide.
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Thinking Game ForumsThinking Game Forums
 Chat and discussion about online thinking games.
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Thinks.comThinks.com
 Recreations for active minds including games, puzzles, math, words, images, books, software and web guide.
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Unitix EntertainmentUnitix Entertainment
 Online games, puzzles and other interactive brainteasers. Fun for all ages.
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Word JuxtapozWord Juxtapoz
 Word puzzles, riddles, rebuses, brain teasers, mazes, cliparts and pictures.
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Zuzzle PuzzlesZuzzle Puzzles
 Collection of puzzles including riddles, logic puzzles and sequential puzzles.
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