AskOxford: Word Games
   Cryptic and easy crosswords, fiendish word games, the history of crosswords, and scrabble and behind the scenes at Countdown.
   http://www.askoxford.com/wordgames/?view=uk

Crossword Puzzles for ESL Students
   A selection of online crossword puzzles sorted by difficulty.
   http://iteslj.org/cw/

Jim Kalb's Palindrome Connection
   A collection of links to web pages about palindromes -- phrases that spell the same forwards as backwards, like "Able was I ere I saw Elba".
   http://www.nyx.net/~jkalb/palindromes/

Kid Crosswords and Other Puzzles
   Choose from several puzzles created just for kids. New puzzles each month.
   http://www.kidcrosswords.com/

Lost in Translation
   Enter a sentence to have it translated from English to five different languages and back. The result is often funny; nothing like the original sentence.
   http://www.tashian.com/multibabel/

Mockok.com
   A large collection of palindromes, focusing on palindromic single sentences (spelling the same forwards and backwards). Submissions welcome.
   http://www.mockok.com/

NOVA: Decoding Nazi Secrets
   Crack the ciphers, send a coded message, and find out what goes on in the minds of code-breakers.
   http://www.pbs.org/wgbh/nova/decoding/

The Nautical Origins for Some Common Expressions
   Explaining the seafaring origins of some common words, figures of speech, and everyday expressions, like "toe the line" and "scuttlebutt".
   http://www.fortogden.com/nauticalterms.html

Wireless Power Word Game
   Challenging word jumbles posted every week.
   http://www.wirelesspower.com/

eLibs.com
   Creating interactive stories from user inputs. Possibility to add a dialect; also different categories and polls.
   http://www.elibs.com/