- Crafty Puzzles Company
Handmade wooden puzzles and amazing 3D jigsaw puzzles.
- A Fun Zone
If you've got some time on your hands, A Fun Zone is sure to entertain! There is plenty to do, so don't let the boss catch you!
- Aha! Puzzles
Original creative puzzles with 'aha!' answers by Lloyd King, author of 'Puzzles For The High IQ'.
Play Mind Games
- Aboard Puzzle Depot
Trivia, Puzzles and Games For Education or Recreation!
Daily Jokes and Brain Teasers.
- Kids IQ Test Center
Intelligence tests for kids and teenagers.
- A1 Puzzles and Crosswords
Interactive Crosswords and Puzzles.
- Conceptis – logic puzzles
Free logic puzzles, online or with pencil and paper, and related activities: logic puzzle forums, stories and articles, news and reviews, and even logic puzzle humour and lifestyles.
- Puzzle Express
Free monthly puzzles to download, online wordsearch and crossword, puzzle playing software and solitaire games. Programs for Windows 95 and Windows CE.
- Brain teasers by Barry R. Clarke
You will find liar problems, logic teasers, number conundrums, matchstick puzzles, lateral mind-benders, in fact, there's something for everyone!
Home of the Paradoxical. Features a selection of paradoxical puzzles, tricks, illusions, games, poems, quotations and more. 9 out of 10 respondents say curiouser.co.uk is the curiousest.
- Logic Games
Challenging Logic Strategy Games for Windows and Macintosh.
- Puzzle Connection
Crossword, Word Search and Word Game Puzzle Site featuring weekly puzzles and puzzle software.
- Dave the Worm
How laterally can you think?
- 12Dicts Word Lists
Some of BrainBashers word games and puzzles check against, or use words from, various lists compiled by Alan Beale.
- Magnum Opus Crosswords
Build your own crosswords.
- An Optical Illusion
A collection of optical illusions and other visual oddities updated with a new illusion every weekday.
- The Brainteasers Network
The Brainteasers Network is a collection of brain teasers, online puzzles and puzzle games.
- Kid Cartoonists
Featuring cartoons from kids all over the world, and home of Slylock Fox cartoon puzzles.
- Archimedes Lab
Mental and puzzling activities designed to stimulate and enhance critical and creative thinking skills.
Interactive Mathematics Miscellany and Puzzles: An encyclopedic collection of articles, solved K12 math problems, computer games and math magic, mathematical fallacies and illusions.
- Puzzles of Leonid Mochalov
Take a look at the puzzles of Leonid Mochalov, an interesting Russian puzzle inventor.
New trivia questions every day! Compete against others around the world for prizes.
Optical illusions, 3D stereograms, brain games and other mind teasing oddities.
- Fundrum My Conundrum
100 math puzzles, riddles and logic puzzles arranged in order of difficulty.
- International High IQ Society
This prestigious international society offers free professional IQ tests, challenging puzzles and brainteasers, and premium chess, backgammon, bridge, and Go tournaments.
- Brain Teasers
Amusing and prominent world brainteasers are collected on this site, including riddles, geometry, algebra puzzles, puzzles with matches, paradoxes and optical illusions.
A collection of logic puzzles, riddles and brain teasers.
- The Puzzle & Craft Factory
High quality Mechanical Puzzles, Games and Educational Toys.
- Livewire Puzzles
Livewire Puzzles has been making and selling wire disentanglement puzzles since 1979. The puzzles are of various levels of difficulty and appeal to puzzle lovers from ages 9 to 99.
- The Great Enigma Challenge
Ponder over amusing and entertaining characters and situations as you use all your logical, analytical and lateral thinking skills to solve the many diverse problems laid out.