Interactive Web games where players who solve the puzzles are eligible to win ca$h and other cool prizes!
Offers contests with cash prizes. Also includes crosswords, riddles, anagrams, cryptograms, and other word games.
Daily jokes, brain teasers and much much more. Win a free T-shirt in the brain teaser competition.
Newspaper Cryptogram and Contest
Compete in three daily cryptogram puzzle contests from the Daily Cryptogram, a part of the Minneapolis Star and Tribune newspaper.
MIT Mystery Hunt
Annual competition held at the Massachusetts Institute of Technology during the January Independent Activity Period (IAP). Challenges each team to solve a large number of puzzles which lead to a coin hidden somewhere on campus.