I really love this spelling game which is great fun.

http://www.m-w.com/game/fowl_play.htm

Follow this link to play an exciting spelling game – I think that I am addicted to this as well.  You have to find the hidden words by clicking on the letters in the correct order BEFORE the zone fills up with letters and the game ends.  WARNING – this is tricky!

http://www.m-w.com/game/wordo_play.htm

Unscramble the words to form a correct spelling.  This game is against the clock and encourages you to think about letter patterns within words.

http://www.primarygames.com/langarts/wordscramble/index.htm

Play this game and spot which word (from the very tricky options) is incorrect. Helps you practise the skill of identifying whether a word ‘looks’ right.

http://www.bbc.co.uk/hardspell/starspell_game.shtml

Play the strategy game of battleships and use your spelling knowledge to spot which is the correct spelling of some common words.  Think carefully…http://www.quia.com/ba/1476.html

BBC Revisewise prefixes and suffixes: http://www.bbc.co.uk/schools/ks2bitesize/english/activities/spelling.shtml