1. Logicville

Educational puzzles, brain teasers, mathematical recreations and word games. A resource for anagrams, cryptograms, alphametics, word puzzles, logic problems, doublets, tangrams, chess, and math quizzes.

http://www.logicville.com/

2. Puzzle Choice

Crosswords, wordsearches, cryptograms, quizzes, wordplay and other interactive and printable puzzles and games.

http://www.puzzlechoice.com/pc/Puzzle_Choicex.html

3. Adventure Puzzles

Serial adventures, continuing story and puzzles building towards a final puzzle and solution.

http://www.questexperiences.com/quest2/PortsToAdventure/AdventurePuzzles/default.asp

4. Crosskit.com

Offers printable crossword and sudoku puzzles. Puzzles are offered daily and weekly with an archive. Also offers a crossword dictionary, daily horoscope, and discussion forums.

http://www.crosskit.com/

5. Holiday Puzzles

Collection of original puzzles developed over the years to celebrate the winter holidays.

http://www.radix.net/~erewhon/puzl/index.html

6. MyCharades.com

Includes charades, riddles, and enigmas.

http://www.mycharades.com/

7. Puzzle Space

Information about language and culture independent puzzles and logic games.

http://www.geocities.com/puzzlespace/

8. Puzzletome

Contests of varying difficulty and types. Also has tutorials with worked examples and practice games. [Registration required]

http://www.puzzletome.com/

9. Rainier Beer Bottlecap Puzzles

The answers to the bottlecap rebus style puzzles found on Rainier Beer and Pearl Beer caps.

http://www.geocities.com/shabber_1/rainier.html

10. The Game

A puzzle hunt run every year at Stanford.

http://zonker.stanford.edu/~snitch/game/

11. The Puppeteer's Cosmic Puzzle

Pictographic puzzle microcosm of old and new playing cards, poems, games and lore. New suits: the zodiac, solar system, evolution, human family, ancient elements, astronomical basis of the calendar and compass.

http://www.cosmicpuzzle.com/

12. The Puzzle Page

Collection of puzzles, brain teasers, mind benders, logic problems, cryptograms, patterns, and enigmas.

http://www.geocities.com/oosterwal/puzzle.htm

13. The Substitute Teacher: Puzzles and other Diversions

Printable puzzles and other diversions to help substitute teachers involve their temporary students in mind stretching activities.

http://www.subhelp.com/

14. The Ultimate Puzzle Site

Challenging puzzles and riddles and interactive quizzes and tests.

http://www.puzzle.dse.nl/index_us.html

15. Tim's World of Puzzles

Information on World Puzzle Championships including links to sample word and logic puzzles.

http://www.home.zonnet.nl/kostunix/