Rape is by it's very nature an intensely personal crime. It is not possible to show rape without focusing closely, intensely and for an extended period of time, on the pain of that one specific victim.

It's not remotely in the same category as a random murder spree of NPCs, which is a more detached and unpersonal crime. Unlike rape, running around town and randomly using weapons of mass destruction to murder every civilian you come across, or single handedly invading a millitary base is so over the top and detached from reality that it detaches the acts from any real world connotation, and keeps them clearly in the realm of video games. Rape is, unfortunately, not detached from reality, and generally not that over the top or unrealistic.