A film series is a collection of related films that share common characters, themes, or storylines. These films are often produced in succession and can be part of a larger franchise, appealing to audiences who enjoy the continuity and development of the narrative across multiple installments. Popular examples include Star Wars and Harry Potter. Film series can vary in length, with some consisting of just a few films while others may have numerous sequels and spin-offs. They often build a dedicated fan base and can significantly impact popular culture, leading to merchandise, video games, and other media adaptations.