Going to Eat You, do not follow this plotline. The films are known for their lurid content, such as sex, nudity and various forms of graphic violence. Sexual assault, torture, and the on-screen depiction of cannibalism are also common, and these acts are performed by both the Westerners and the natives. The films' advertising focused on the presentation of this content rather than any critical acclaim. This form of advertising was sometimes accompanied by claims regarding the film's notoriety. For instance, the posters for Cannibal Ferox claimed that the film was banned in 31 countries, while the British home video cover for Eaten Alive! similarly noted that the film was previously banned in the country. History Films containing elements similar to cannibal films existed before the genre's inception. Rainforest adventure films were often found popular in cinema (such as with the Tarzan movies of the 1930s and 1940s starring Johnny Weissmuller). Some of these films even included primitive, and in some cases, alleged cannibal tribes, and could be seen as the prototype for the modern cannibal film. One movie that can almost be definitively linked as the predecessor to the cannibal genre is Cornel Wilde's 1965 film The Naked Prey, which involved a white man being chased by a tribe of natives because his safari group offended their chief. Another influential film on this genre was the 1970 Richard Harris western A Man Called Horse which, although it involved non-cannibalistic Native Americans, was about a civilized white man being captured by, and forced to live with, a tribe of savages, during which time he comes to respect, and strives to join, his captors. The basic plot of Man from Deep River is an almost scene-for-scene swipe from that film, merely substituting rainforest cannibals for the Native Americans. This film, created to imitate the famous 1970 Richard Harris western, would wind up becoming the template for what would later become the Italian cannibal film genre. The subgenre as it is known today is usually regarded to have started with Italian director Umberto Lenzi's 1972 film Man from Deep River. It was released in New York City as Sacrifice!, and was a 42nd Street hit. This film inspired several other similar films to be made during the late 1970s, a period identified by genre fans as the "cannibal boom". Included in these films are Ruggero Deodato's 1977 film Ultimo mondo cannibale (a.k.a.