Crossword puzzles for everyone. There are varying difficulties and topics. Puzzles are timed and scored so you can compete against your friends and you can even create your own puzzles.
You get points for entering correct letters and lose points for wrong guesses. Additionally you get points for finishing words. The longer the words the more points you get. Finally, if you complete a puzzle in less than 2 hours you will get a time bonus.
You need 25 karma points to create a puzzle. You can get karma points by submiting new clues, categorizing existing clues, and helping other users when they get stuck. This isn't to mean to be mean but to make sure puzzles continually have new fresh clues.