Crosswords
Links
Crosswise
http://www.wordsandtools.com/index_crosswise.htm
Interactive crosswords for ESL learners - 8 levels of difficulty
Dream Puzzle
Puzzle Information Portal - Crossword Puzzle, Jigsaw Puzzle, Create Yo
Goobix Crosswords
Includes 3x3 and 4x4 crosswords, playable from within the browser.
puzzle.tv
Interactive crosswords, wordsearches, codebreakers; all printable.
Questique
Questique is a strategy crossword board game that can be used as an aid for teaching the English language.