Guitar Hero tries to play catch-up with the upstart contender to the throne, Rock Band, but delivers an ugly, rushed product.
World Tour tries to set itself apart with a higher degree of difficulty than its competitor, adding open bass notes and extra drum notes (if you buy their drum set). This is at the expense of the fun, party atmosphere these games usually focus on. More frustration than fun.
For every positive aspect of this game, there is an equal, if not greater, negative.
Vocals are new to the Guitar Hero franchise, but vocal recognition is the worst of any game I've played.
I like the addition of character creation, but the art design is often downright scary.
Recommended only as a source of more songs.