A film franchise is a series of related films that share common characters, settings, or themes, often based on a single original work. Popular examples include Star Wars, Harry Potter, and Marvel Cinematic Universe, which have captivated audiences worldwide and generated significant box office revenue. Franchises often expand beyond films into other media, such as television shows, video games, and merchandise. This interconnected universe allows fans to engage with the story in various ways, creating a loyal fanbase and enhancing the overall experience of the franchise.