UPDATE:
I've recently have seen an increase in DAZ assets and resource concerning graphic, violent content. There are many websites now offering this type of content to the public. Usually, supply is created for the demand. However, content creators aren't really giving a "one click" solution. It seems that they don't really want to be branded by anyone as offensive or be banned. Rather, one would have to build such scenes. It will be interesting to see if any dev will jump at the lack of games/stories in this niche. It's safe to say there's a market. Don't believe me? In May, here in the US, Twisted Pictures will be releasing another "Saw" movie. The last one, although not very well received, had a budget of ten million dollars and grossed well over one hundred million dollars. For some strange reason, people love carnage. As I said, let's see whose the first dev to strike out in this genre. More than likely, they'll hit paydirt. Maybe not because of the story, but rather on the controversy.