A cult film or cult movie, also commonly referred to as a cult classic, is a film that has acquired a cult following. Cult films are known for their dedicated, passionate fanbase which forms an elaborate subculture, members of which engage in repeated viewings, dialogue-quoting, and audience participation. Inclusive definitions allow for major studio productions, especially box-office bombs, while exclusive definitions focus more on obscure, transgressive films shunned by the mainstream. The difficulty in defining the term and subjectivity of what qualifies as a cult film mirror classificatory disputes about art. The term cult film itself was first used in the 1970s to describe the culture that surrounded underground films and midnight movies, though cult was in common use in film analysis for decades prior to that.

Battle Royale is a 2000 Japanese action film directed by Kinji Fukasaku from a screenplay by Kenta Fukasaku, based on the 1999 novel of the same name by Koushun Takami. The film stars Tatsuya Fujiwara, Aki Maeda, Tarō Yamamoto, Chiaki Kuriyama, Kou Shibasaki, Masanobu Andō, and Beat Takeshi. It follows a group of junior-high-school students forced to fight to the death by a Japanese totalitarian government.