Whether it’s campy novelties, obscure references, or viewing rituals, there’s no set formula for the making of a true cult classic. The only hard and fast requirement: an undying following. Regardless of their broad reception, these films have withstood the test of time above all for their ability to unify their dedicated fanbases. These are the best cult classics of all time.
Source: https://www.esquire.com/entertainment/movies/g33351370/best-cult-classic-movies/