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Fictional universe

A fictional universe[1] is the internally consistent fictional setting used in a narrative work or work of art, most commonly associated with works of fantasy and science fiction. Fictional universes appear in novels, comics, films, television shows, video games, art, and other creative works.[2][3]

"In-universe" and "Imaginary world" redirect here. For fictional dream worlds, see Dream world (plot device).

A fictional universe may be an alternative version of the real world, differing only in the particulars of the story. All fiction, in this sense, is set in a fictional universe, since at least some of its characters, events, and places are not real; the term "fictional universe", however, is usually not applied to worlds that do not contain speculative elements.


When the setting of a fictional universe is not presented as our own world but as its own distinct world, it is often instead called a fictional world or "fantasy world".[4] In science fiction such a fictional world may be a remote alien planet or galaxy with little apparent relationship to the real world (as in Star Wars); in fantasy it may be a greatly fictionalized or invented version of Earth's distant past or future (as in The Lord of the Rings).[2] When such a world is meant to have no connection to our own world (in effect, our world does not exist in that world's reality) or is presented as a reality that can only be accessed from our own by a portal, it is sometimes called a secondary world; such settings are common in high fantasy (as in The Chronicles of Narnia, Earthsea, and Discworld). A fictional world that is meant to exist inside the real world (as in the Land of Oz or the Neverland) may be termed a fictional realm.


When a franchise of related works has two or more alternative fictional universes that are each internally consistent but which are not fully consistent with one another (as by having distinct plotlines and characters, for example between a comic and its film adaptation), each such alternative universe may be referred to as a (fictional) continuity.

Universe vs. setting[edit]

A famous example of a detailed fictional universe is Arda (more popularly known as Middle-earth), of J. R. R. Tolkien's books The Lord of the Rings, The Hobbit, and The Silmarillion. He created first its languages and then the world itself, which he states was "primarily linguistic in inspiration and was begun in order to provide the necessary 'history' for the Elvish tongues."[5]


A modern example of a fictional universe is that of the Avatar film series, as James Cameron invented an entire ecosystem, with a team of scientists to test whether it was viable. Additionally, he commissioned a linguistics expert to invent the Na'vi language.[6][7]


Virtually every successful fictional TV series or comic book develops its own "universe" to keep track of the various episodes or issues. Writers for that series must follow its story bible.[8]

and Gianni Guadalupi: The Dictionary of Imaginary Places, New York : Harcourt Brace, c2000. ISBN 0-15-100541-9

Alberto Manguel

: The Dictionary of Science Fiction Places, New York : Wonderland Press, c1999. ISBN 0-684-84958-5

Brian Stableford

: The Tough Guide to Fantasyland, New York : Firebird, 2006. ISBN 0-14-240722-4, Explains and parodies the common features of a standard fantasy world

Diana Wynne Jones

and Jeffery Osier: Writer's Guide to Creating A Science Fiction Universe, Cincinnati, Ohio : Writer's Digest Books, 1993. ISBN 0-89879-536-2

George Ochoa

Michael Page and  : Encyclopedia of Things That Never Were: Creatures, Places, and People, 1987. ISBN 0-14-010008-3

Robert Ingpen