A movie franchise is a series of related films that share common characters, settings, or storylines. These films are often produced by the same studio and may follow a specific theme or genre. Popular examples of movie franchises include the Marvel Cinematic Universe, Star Wars, and Harry Potter. Franchises can expand beyond films to include merchandise, television shows, and video games, creating a broader universe for fans. They often aim to build a loyal audience and generate significant revenue through sequels, spin-offs, and reboots, making them a key part of the entertainment industry.