kamil on 28 November 2007
I think it's not fair to compare it's sales to original Guitar Hero. GH was not only a new IP, it was a whole new idea. Rock band isn't that innovative. It takes a lot of from GH and it has some hype also. I think that most people will agre that RB is better than GH but when it's priced at almost 200$ it won't sell as good.
And Assasin's Creed ia also a new IP and it sold 700-800k on its first week.
