- 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.
- 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.
- Puzzle Choice - Crosswords, wordsearches, cryptograms, quizzes, wordplay and other interactive and printable puzzles and games.
- 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.
- VNC: Volker-Noelle.com - Collection of brain teasers, logic puzzles, paradoxes and mathematical riddles.
- Tim's World of Puzzles - Information on World Puzzle Championships including links to sample word and logic puzzles.
- Adventure Puzzles - Serial adventures, continuing story and puzzles building towards a final puzzle and solution.
- The Game - A puzzle hunt run every year at Stanford.
- Holiday Puzzles - Collection of original puzzles developed over the years to celebrate the winter holidays.
- Puzzletome - Contests of varying difficulty and types. Also has tutorials with worked examples and practice games. [Registration required]
- MyCharades.com - Includes charades, riddles, and enigmas.
- The Ultimate Puzzle Site - Challenging puzzles and riddles and interactive quizzes and tests.
- Variety Games - Shareware software programs available to create custom crossword and word searches.
- Puzzle Monster - Original trivia, logic, visual and word puzzles.
- Crosswords (95)
- Jigsaw (8)
- Online Trivia@ (152)
- Optical Illusions@ (22)
- Mechanical (81)
- Mazes (149)
- Self-Referential Sentences (1)
- Brain Teasers (204)
- Word Search (46)
- Cryptograms@ (16)
- Sudoku@ (79)
- Nonograms@ (5)
- Riddles@ (28)
- Mathematical@ (14)
- Word Games@ (187)
- Anagrams@ (34)
- Ambigrams@ (12)
- 3D (3)