“Probably the most characteristic feature of cult films is the transgression of common Hollywood conventions. The films are different from the clichéd Hollywood productions and they don’t aim at satisfying the expectations of the mass of moviegoers. Consequently they usually fail at the box-offices and are often considered flops when appearing in the theaters for the first time. Yet, in spite of or (perhaps) due to this fact, they attract the attention of spectators and transform their “failure” into a success during the course of time." 

– ftvstudy.com, WHAT MAKES A CULT MOVIE?