As an adult and someone who likes horror movies, I really enjoyed this movie. It was unlike any other horror movie I've ever seen, and the storyline was very unique. However, it is highly inappropriate and definitely should NOT be shown to children. I chose the rating of off for 14 and under, but personally I wouldn't feel comfortable letting my child watch it unless they were at least 16 or 17. The images in the movie were quite disturbing, and I wouldn't want any of it in my childs head no matter what their age...but you know how teenagers like scary movies.
The violence in this movie is extreme and many parts were too disturbing for me. Sexual content is also a big issue, and the movie even includes more than one graphic scene of rape. Language is, of course, very strong as well! There are also many drinking scenes.