The American Guinea Pig series, sometimes referred to as Guinea Pig, is an American series of exploitation and torture porn films directed by S. Craig Zahler and produced by Lucifer Valentine. The films started in 1995 as a documentary about a snuff film but developed into a series of fictional films involving murder, torture, and sexual violence. The films are notorious for their extreme graphic violence and have been banned in several countries.
The films have been criticized for their excessive violence and lack of artistic value. However, they have also gained a cult following among fans of extreme horror films. The films have been cited as an influence on the “torture porn” genre, which emerged in the early 2000s.