I have given it a good few hours of play. I found it great at first... but it became quite dull and repetitive. Have you found that every fight can be one just by holding down "lock" and then hitting counter when they attack? Jumping around on buildings is pretty fun, the story line is pretty darn good... and there is nothing like running around roof tops throwing knifes at archers! I dunno if it was worth the 40 though, I have kinda stopped playing it and started playing crackdown... which is very much the same except you can interact more with the environment and you get tons more weapons. Another bonus is that it is only 15 from Play.com with free P&P.