Guitar Hero DS will flop, I'm sure of it. It seems like a game that would be made for the DS (now instead of a guitar, you can just tap the onscreen dots!) but it's just stupid.
Anyways, it will be released so often that at one point it'll just become a mainstream piece of crap. I think Guitar Hero 4 will probably be the peak of sales for the series, and then you'll see Activision putting the series on the PSP and DS and Cell Phone, and god knows what else!







