- A Fun Zone
 - Offers daily brainteasers and a selection of games and puzzles. - Bill's Brain Teasers
- Words and shapes, and their positions, can be used to derive a word or saying.
- Brain Teasers and Math Puzzles
- Interactive with immediate scoring.
- Braingle
- User submitted and ranked brain teasers, riddles, and mind puzzles.
- Brainwave
- Puzzles to charge your brain.
- Enigma Puzzle, The
- Web-based puzzle that tests your powers of deduction, reasoning, logic, creativity, research, and the ability to see connections between apparently unrelated things.
- Exidor's Logic Puzzle Place
- Brain teasers and other puzzles.
- flooble :: perplexus
- Contains a collection of brain teasers, perplexing puzzles and logic problems from simple mind tricks to in-depth math.
- Frvade
- Online brain tickler, players look for clues on the web page, in the graphics, and throughout the site in order to progress through the game.
- Grey Labyrinth, The
- Seeks to stimulate interest and curiosity into the human mind.
- Homepage of Riddles
- Series of brainteasers.
- Planetarium
- Illustrated puzzle story in twelve weekly installments, starting from when you first visit.
- Puzzling World of Barry R. Clarke
- Original free brain teasers and puzzles forum.
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