Test your vocabulary and have fun.
http://dictionary.reference.com/fun
Spelling : http://blog.oxforddictionaries.com/media/spelling-bee-2011/
Hangman: http://blog.oxforddictionaries.com/media/hangman/
Crossword: http://oxforddictionaries.com/words/crosswords
Language games: http://www.macmillandictionary.com/language-games/
Children games: http://learnenglishkids.britishcouncil.org/en/fun-with-english