Fiction is a term used to classify any story created by the imagination, rather than based strictly on history or fact. Fiction can be expressed in a variety of formats, including writings, live performances, films, television programs, video games, and role-playing games, though the term originally and most commonly refers to the major narrative forms of literature (see literary fiction), including the novel, novella, short story, and play. Fiction constitutes an act of creative invention, so that faithfulness to reality is not typically assumed; in other words, fiction is not expected to present only characters who are actual people or descriptions that are factually true. The context of fiction is generally open to interpretation, due to fiction's freedom from any necessary embedding in reality; however, some fictional works are claimed to be, or marketed as, historically or factually accurate, complicating the traditional distinction between fiction and non-fiction. Fiction is a classification or category, rather than a specific mode or genre, unless used in a narrower sense as a synonym for a particular literary fiction form.