Guitar Hero: Metallica in the long run is nothing more then a spin-off release during a time where Guitar Hero continues to print money. The effort is definitely here for the project as a whole and taking on the metal genre is definitely a step in a different direction. You could also make the argument that Activision could've easily just use Metallica's tracks of the past as DLC, but then again why pay what will end up occurring over 60 bucks the paying the same price for a game with everything included? Seems like a rather easy decision for music lovers. In the end, it's up to taste and whether or not you feel the need to explore your metal side and thrash your head out.