• Crossword Puzzle Maker ...Makes creating a crossword puzzle quick and easy
• Regex Crossword ...Welcome to the fantastic world of nerdy regex fun
• Online Puzzles and Competitions ...Play our new range of online puzzles, hone your skills with our puzzle tutorials

    Brain

• Brain Boosters ...lateral thinking, logic etc


• Brain Den ...Logic Puzzles


• Brain Fun ...Brain Teasers, Puzzles, Games & more


• Brain Teasers


• Brain Teasers


• Brain Teasers & Brain Games


• Brain Teasers and Games with a Neuroscience Angle ...A selection of the 50 Brain Teasers that people have enjoyed


• BrainBashers...puzzles


• BrainFood


• Braingle ...Brain Teasers, Riddles, Trivia, Brain Exercises


• Brain Metrix


• BrainQuest


• Buoyancy Brainteasers


• FunBrain


• Gamequarium Brain Teasers


• Games for the Brain


• Mathematical Brain Teasers and Puzzles


• ProProfs ...Play brain games, free puzzle games and create your own game!


• Sharp Brains ...The best science-based information and guidance for Brain Health and Fitness

    Crossword Puzzles

• Oct 16 -Regex Crossword ...Welcome to the fantastic world of nerdy regex fun


• The Crossword Network ...Free Crosswords - Online Crossword Compiler

    Games

• Internet Scrabble Club


• Prognosticate ...news game


• Scrabble


• SCRABBLE + Logology


• Scrabble Help


• Scrabble Rack

    Illusions

• Akiyoshi's Illusions


• BrainDen Optical illusions ...Several types of optical illusions sorted into detailed categories


• Exploratorium Illusions


• Eye Tricks ...optical illusions


• llusion Sciences ...A new illusion every week


• Mighty Optical Illusions


• Optical Illusions


• Optical Illusions


• Optical Illusions & Visual Phenomena


• Planet Perplex Illusions


• Sandlot Science Optical Illusions

    IQ Tests

• High IQ Society


• IQ League ...Try the 60 second IQ test


• IQ Test


• IQ Test


• IQ Tests ...An IQ in the range of 90 to 110 is considered average


• IQ Test


• IQ Testing Lab


• Majon's Online IQ Test


• Puzz.com ...IQ tests, puzzles, games, trivia etc

    Logic & Math Puzzles

• Conceptis Puzzles ...The home of logic puzzles


• Fun Logic Puzzles ...Some simple recreational logic puzzles. See if you can solve them!


• Interactive Mathematics Miscellany and Puzzles


• Logic Puzzles ...require no particular knowledge and can be solved using logic alone


• Math and Logic Problems Galore ...Word problems, puzzles, and ancient games like Nonograms to logic brain teasers


• Math Goodies Word Searches


• Mathematical Puzzles ...for the mathematically adept


• Maths Puzzle


• Nick's Mathematical Puzzles


• Problem Corner


• Project Euler ...A series of challenging mathematical/computer programming problems


• Pythagorean Puzzle


• The Hardest Logic Puzzle Ever ...see for yourself!


• Who keeps the Fish?


• 100 Interesting Mathematical Problems, Exercises, Puzzles, and Diversions

    Mazes

• Caerdroia - Journal of Mazes and Labyrinths


• Click Mazes


• Great Mazes


• Jo Edkins' Maze Page


• Logic Mazes


• The Maze


• World Maze Database

    Mensa

• Mensa


• Mensa Australia


• Mensa Canada


• Mensa Puzzles


• Mensa Workout

    Miscellaneous Sites

• Aenigmatica...a gymnasium for your Brain


• Auto Puzzles


• BrainsBreaker Online Jigsaws


• Card Trick Central


• Codebreaking and Secret Weapons in WWII


• Codes and Ciphers


• Cryptographs


• DaVinci Code Quest


• Decipher ...A series of fourteen cryptograms


• Decoding Nazi Secrets


• eCardTricks


• Edgar Allan Poe Cryptographic Challenge


• Encyclopedia of Integer Sequences


• Filmwise Invisibles


• JigZone


• Mentat Wiki ...A collaborative environment for exploring ways to become a better thinker


• myRebus ...Magically makes a rebus of anything you type


• Pharaoh's Pump


• Riddle Nut


• Riddles


• Secrets of the Mind


• The Great Enigma Challenge


• The Problem Site


• TheJigsawPuzzles ...Ever-growing collection of free online jigsaw puzzles

Puzzle Pages

• A1 Puzzles and Crosswords...Interactive Crosswords, Puzzles


• AIMS Puzzle Corner


• Archimedes Laboratory...puzzles


• Bambam's Puzzlesite


• Bits & Pieces Puzzle Arcade


• Break the Code


• Classic Puzzles


• Clifford Pickover's Page...puzzles within


• Combination Lock ...puzzle


• Conundrum of the Month


• CR Puzzles


• Cricklers...wordpuzzles


• Eluzions Puzzles ...Wide variety of mental challenges


• Erich's Puzzle Palace


• FreeInternetPuzzle ...Kill some time with games that are intellectually stimulating


• Games Magazine ...Consumer magazine featuring a wide variety of verbal and visual puzzles, brainteasers, trivia quizzes, etc


• Games & Puzzles


• How to Make Puzzles


• Inside Japans Puzzle Palace


• Jason Zahn Game Show


• Jed's List of Situation Puzzles


• Ken's Puzzle of the Week


• Lateral Puzzles


• Lateral Thinking Puzzles


• Lesson Corner Puzzle Makers ...For Teachers and Homeschoolers who want to make engaging handouts for vocabulary building exercises


• Lovatt's Online Puzzles...crosswords etc


• Matthew's World of 20KB Puzzle Programs


• Microsoft Puzzle Collection


• Mind Breakers


• National Puzzlers' League


• Online Puzzles and Competitions ...Play our new range of online puzzles, hone your skills with our puzzle tutorials


• Overture Facile ...online puzzle


• Pennypress Dell Magazines...Free puzzles and more every day


• Period.com Puzzles


• Ponder This


• Puzzability Puzzles


• Puzzle Choice


• Puzzle Connection


• Puzzle Crypt


• Puzzle Games ...Play Online Puzzle Games, Jigsaw Puzzles Games, Sudoku Puzzle Games and Popular Games in Your Free Time!


• Puzzle Maker ...Create and print customized word search, crossword and math puzzles


• Puzzle Pirates


• Puzzle Playground


• Puzzle Pointers


• Puzzle World


• Puzzler


• Puzzles for the Avid Consumer


• Puzzles


• Puzzles


• Puzzletron


• Puzzling Adventures: Sir Birnie's Will ...How a 14-year-old solved the mystery of an apparently miserly grandfather


• Sam Loyd's Cyclopedia of 5000 Puzzles


• Sam Loyd's Fifteen Puzzle


• Sound Puzzles


• The Cyclopedia of Puzzles


• The Einstein Puzzle


• The Grey Labyrinth


• The Puzzle Club


• The Puzzle Depot


• The Puzzle Society ...Games to maintain your brain


• The Puzzler


• The Puzzling World of Barry R. Clarke


• The rec.puzzles Archive


• The Set Daily Puzzle ...And other various puzzles


• The Ultimate Puzzle Site


• Three Puzzles from Martin Gardner ...Here's a taste of the kinds of puzzles he was famous for bringing to the world


• Tim's World of Puzzles


• Web Puzzler


• Wei-Hwa's Puzzle Challenges


• What is it?...photo puzzles


• Wordly-Wise...word puzzles


• World Puzzle Championship History


• 123 Puzzle Games...freeware


• 2000 World Puzzle Championships Selections

    Quizzes & Tests

• Art History Quiz


• Barbarian's Online Test Page


• Free Quizzes


• Games, Puzzles, Quizzes, Tests


• Geometry Quizzes


• JetPunk ...Visit JetPunk for the world's best quizzes, with new quizzes released every day


• Jung Typology Test


• Personality Quiz


• Personality Test Center


• Psychology Tests


• Quiz Factor ...Fun, fascinating and free quiz site where you can test your knowledge and challenge your friends


• Quiz Hub


• Quizify ...Quizify is a flashcard-style program to help with studying


• Quizilla


• Quizzes for All Ages


• The AHA! Science Quiz


• The Daily Quizshow


• The Google Maps Quiz


• UN Quizzes


• Wait Wait-Don't Tell Me!...quizzes


• World Quiz League


• World's Smallest Political Quiz


• 916 Test...good luck!

    Rebus Puzzles

• Puzzle Soup


• Rebus Puzzles ...word picture puzzles


• Rebus Puzzle Brainteasers ...word picture puzzles

    Rubik

• How to Solve a Rubik's Cube ...If you read this method, that's it, you will never have solved it thanks to your wits


• How to Solve the Rubik's Cube ...Make one twist and then make another


• Rubik Online


• Rubik's Cube


• Rubik’s Cube Solution


• Solving Rubiks Cube


• Solving Rubik's Cube for Speed ...This is a tutorial for a method of solving Rubik's Cube

    Sudoku

• Pi Day Sudoku Puzzle ... Fill in the grid so that each row, column, and jigsaw region contains 1-9 exactly once and ? three times


• Fiendish Sudoku

    Trivia

• All Trivia Game


• Cascoly Online Trivia Games


• Fibonacci Flim Flam


• Fibonacci Numbers and the Golden Section


• Fun Trivia


• Harper's Index


• Highest, Lowest, Deepest


• Historical Trivia


• Trivia


• Trivia Cafe


• Trivia Challenge


• Trivia Page


• Trivia Web


• 80's Trivia

    Wooden Puzzles

• Mr Puzzle Australia


• MGC Wooden Jigsaw Puzzles ...custom made

    Word Puzzles

• Crickler...puzzle


• Fake Out!


• Free Word Search Puzzles


• John's Word Search Puzzles


• Metacrostics...from Arthur Bloch


• Numbers & Word Puzzles


• Online Word Search ...Online Word Search is a website where you can play word find games


• The Enigma Device


• Todays Encrypted Quote & Contest


• Word Game of the Day


• Word Puzzle Contests


• WordWays Puzzler ...Can you fill in the blanks with no hints?