Does the existence of Diablo mean that we don't want Torchlight? Does the existence of Modern Warfare 2 mean we don't want Spec Ops: The Line? Games can be ve

Does the existence of Diablo mean that we don't want Torchlight? Does the existence of Modern Warfare 2 mean we don't want Spec Ops: The Line? Games can be very similar to previous ones but still offer a new experience.