Fan fiction is a type of creative writing where fans of a particular book, movie, TV show, or video game create their own stories using the characters and settings from the original work. These stories can explore alternative plots, character relationships, or even new adventures that were not included in the original material. Writers of fan fiction often share their work online through various platforms, allowing others to read and provide feedback. This form of storytelling fosters a sense of community among fans, as they can connect over shared interests and interpretations of their favorite fictional worlds.