The Massacre films are three interconnected series of slasher films executive-produced by Roger Corman: the Slumber Party Massacre series (1982–1990), the Sorority House Massacre series (1986–1990) and the Cheerleader Massacre series (2003–2011), distributed by New World Pictures and New Concorde. The series also features the standalone film Sharkansas Women's Prison Massacre (2015), and the reboot film Slumber Party Massacre (2021). All three of the original Slumber Party Massacre films, and the first Sorority House Massacre film, were given limited theatrical releases, while Sorority House Massacre II and III, and both Cheerleader Massacre films were released direct-to-video, and the 2021 reboot released to the Syfy network. The franchise is notable for being primarily directed by women, who direct every Slumber Party Massacre film and the first Sorority House Massacre film. Background The title Massacre Collection was utilized in the marketing of the DVD releases of the films, and was not a part of their theatrical or initial home video releases. The films, the first six of which were each produced by Roger Corman, were marketed as an analogous series based on their related content as well as the inclusion of "massacre" in their respective titles. The Slumber Party Massacre trilogy has the distinction of being the first horror film series in history whose films were exclusively written and directed by women, in addition to the first spin-off film forming the Sorority House Massacre sub-series. Film series Slumber Party Massacre series Between 2000–2003, the first two films were each released twice on DVD by New Concorde, while the third film was released once. These releases featured the Massacre Collection banner. In 2010, all three of the Slumber Party Massacre films were released as a triple feature DVD by Shout! Factory as part of the company's Roger Corman's Cult Classics DVD series. Shout! Factory released The Slumber Party Massacre on Blu-ray for the first time in March 2014, and on January 17, 2017, Slumber Party Massacre II and III were released as a double feature Blu-ray, also by Shout! Factory. None of these releases featured the Massacre Collection epithet that the New Concorde DVD releases had. Shout! Factory released a limited edition of the first film on Blu-ray in January 2020, featuring new extras and a steelbook. A remake, directed by Danishka Esterhazy and simply titled Slumber Party Massacre, premiered on Syfy in 2021. Sorority House Massacre series Between 2000–2004, like the Slumber