When people think of a horror or slasher movie, everyone thinks of the "SAW" franchise or the "hostel" franchise, however those movies didn't go to the extreme such as the movies on this list.
I'm not afraid of werewolves or vampires or haunted hotels, I'm afraid of what real human beings do to other human beings.-Walther Jon Williams
1.) Poughkeepsie tapes 2007/2014
A movie that was filmed in 2007 but wasn't released till 2014. It's a movie of a serial killer that killed multiple women and recorded his crimes on video. The was filmed in a documentary and found footage style.
2.) June 9th
A 2008 found footage movie about a group of teens who encounter a very evil cult. You get glimpses of the shocking, disturbing ending of this movie at the beginning of the film, no spoilers but if you ever watch this film, be prepared for the gory ending of the film. There is a extra scene throughout the credits.
A slasher, mystery movie about a group of detectives that attempt to solve a massacre by using the footage they found. Part of the movie is found footage, it features a gruesome death scene and it features a twist at the end of the movie.
4.) August underground series
These are the most disturbing movies on this list, they make the "SAW" movie series look like rated G movies. It's a very disturbing found footage movie series about serial killers that film their evil deeds. The movie is shown from the antagonist's point of view. The director of these movies is also the antagonist in these movies. The movies are so disturbing that even the DVD covers are graphic. Instead of showing a poster, here is a picture with the word "censored".
5.) Murder Collection Volume 1 2009
It's a movie that features a compilation of disturbing footage from hand held cameras. The same man that directed August Underground also directed this movie and he also stars in this movie.
6.) A Serbian film 2010
A movie about a man who has a controversial profession. He eventually gets hired by a shady company because he is so good at what he does. There are various disturbing scenes throughout the film even though it's not a horror or slasher film.
6.) Illsa series
A disturbing slasher film series from the 1970s about a sadistic female prison warden. In the first movie, she is a female Nazi who is a warden of a prison camp, she mistreats and conducts barbaric experiments on her inmates and she also kills various inmates in gruesome ways.
7.) Grotesque 2009
A very disturbing Japanese slasher movie about a sadistic surgeon that tortures his patients. This movie was banned in the UK for it's graphic content.
8.) Cannibal Holocaust 1980
A very controversial Italian found footage film, it's about a film crew who encountered a cannibalistic tribe in South America. The controversy arose when it was revealed that the animal deaths in this movie were real. Also, the director of this film got in big trouble for the real animal deaths and he had to bring all the actors of this movie to court to prove they were still alive. This movie is banned in several countries.
9.) Hatchet movie series
A movie series about a deranged serial killer with physical deformities who kills anyone that goes in his swamp.