Slipknot

CHICAGO – If you think that most of the music games in the most impressive new genre of the last several years have been nothing more than expensive expansion packs then I doubt that “Guitar Hero: Warriors of Rock” is really going to change your mind. The game is far from a drastic leap forward from what fans have already experienced but there are enough quality refinements and enjoyable tunes that it delivers what you should expect when judged on its own terms.