
A fictional universe, or fictional world, is a self-consistent setting with events, and often other elements, that differ from the real world. It may also be called an imagined, constructed, or fictional realm. Fictional universes may appear in novels, comics, films, television shows, video games, and other creative works.

The Buffyverse or Slayerverse is a media franchise created by Joss Whedon. The term also refers to the shared fictional universe in which the TV series Buffy the Vampire Slayer and Angel are set. This term, originally coined by fans of the TV series, has since been used in the titles of published works, and adopted by Joss Whedon, the creator of the fictional universe. The Buffyverse is a place in which supernatural phenomena exist, and supernatural evil can be challenged by people willing to fight against such forces. Much of the licensed Buffyverse merchandise and media, while being official, isn't considered to be canon within the universe.

The Chronicles of Amber is a series of fantasy novels by American writer Roger Zelazny. The main series consists of two story arcs, each five novels in length. Additionally, there are a number of Amber short stories and other works. Four additional prequel books, authorized by the Zelazny estate following his death, were authored by John Gregory Betancourt.

The Conjuring Universe is an American media franchise and shared universe centered on a series of supernatural horror films, produced by New Line Cinema, the Safran Company, and Atomic Monster Productions and distributed by Warner Bros. Pictures. The films present a dramatization of the supposed real-life cases of Ed and Lorraine Warren, paranormal investigators and authors associated with prominent yet controversial cases of haunting. The main series follows their attempts to assist people who find themselves possessed by demonic spirits, while the spin-off films focus on the origins of some of the entities the Warrens have encountered.

Brandon Sanderson is an American author of epic fantasy and science fiction. He is best known for the Cosmere fictional universe, in which most of his fantasy novels, most notably the Mistborn series and The Stormlight Archive, are set. He is also known for finishing Robert Jordan's high fantasy series The Wheel of Time.

The Cthulhu Mythos is a shared fictional universe, originating in the works of American horror writer H. P. Lovecraft. The term was coined by August Derleth, a contemporary correspondent and protégé of Lovecraft, to identify the settings, tropes, and lore that were employed by Lovecraft and his literary successors. The name Cthulhu derives from the central creature in Lovecraft's seminal short story "The Call of Cthulhu", first published in the pulp magazine Weird Tales in 1928.

The DC Animated Universe is a shared universe of superhero-based animated television series, produced by Warner Bros. Animation and based on characters that appear in American comic books published by DC Comics. The shared universe, much like the original DC Universe in comic books, was established by crossing over common plot elements, settings, cast, and characters.

The DC Extended Universe (DCEU) is an American media franchise and shared universe centered on a series of superhero films based on characters that appear in American comic books by DC Comics, produced by DC Films and distributed by Warner Bros. Pictures. The franchise also includes comic books, short films, novels, and video games. The DCEU, much like the original DC Universe in comic books, was established by crossing over common plot elements, settings, cast, and characters.

The DC Universe (DCU) is the fictional shared universe where most stories in American comic book titles published by DC Comics take place. DC superheroes such as Superman, Batman, Wonder Woman, Martian Manhunter, The Flash, Green Lantern, and Aquaman are from this universe, and it also contains well-known supervillains such as Lex Luthor, the Joker, Brainiac, Gorilla Grodd, Sinestro, Deathstroke, Cheetah, and Darkseid. In context, the term "DC Universe" usually refers to the main DC continuity.

Dying Earth is a fantasy series by the American author Jack Vance, comprising four books originally published from 1950 to 1984. Some have been called picaresque. They vary from short story collections to a fix-up, perhaps all the way to novel.

Eon is a science fiction novel by American author Greg Bear published by Bluejay Books in 1985. The story is set in 2005, when the U.S. and Soviet Union are on the verge of nuclear war. In that tense political climate, a 290 km asteroid is detected, following an anomalous and very powerful energy burst just outside the solar system. The asteroid moves into a highly eccentric Near-Earth orbit, and the two nations each try to claim this mysterious object. Eon was nominated for an Arthur C. Clarke Award in 1987. It is the first novel in The Way series; followed by Eternity.

Eternity is a science fiction novel by American author Greg Bear published by Warner Books in 1988. It is the second book in his The Way series, dealing largely with the aftermath of the decision to split Axis City and abandon the Way in the preceding book, Eon.

The Finisterre universe is a fictional universe created by American science fiction and fantasy author C. J. Cherryh. Currently, it comprises a series of two science fiction / horror novels written by Cherryh, Rider at the Gate (1995) and Cloud's Rider (1996), also known as The Rider Series. They were published by Warner Books in the US and Hodder & Stoughton in the United Kingdom. The series is about the descendants of lost colonists stranded many generations ago on the hostile planet of Finisterre. For continuity, the two novels should be read in publication sequence.

The Foreigner universe is a fictional universe created by American writer C. J. Cherryh. The series centers on the descendants of a ship lost in transit from Earth en route to found a new space station. It consists of a series of semi-encapsulated trilogy arcs that focus on the life of Bren Cameron, the human paidhi, a translator-diplomat to the court of the ruling atevi race. Currently twenty one novels have been published between 1994 and 2020. Cherryh has also self-published two ebook short story prequels to the series, "Deliberations" and "Invitations".

The Legend of Zelda is a video game franchise created by Japanese video game developer Shigeru Miyamoto.

"The Library of Babel" is a short story by Argentine author and librarian Jorge Luis Borges (1899–1986), conceiving of a universe in the form of a vast library containing all possible 410-page books of a certain format and character set.

The Marvel Cinematic Universe (MCU) is an American media franchise and shared universe centered on a series of superhero films, independently produced by Marvel Studios and based on characters that appear in American comic books published by Marvel Comics. The franchise includes comic books, short films, television series, and digital series. The shared universe, much like the original Marvel Universe in comic books, was established by crossing over common plot elements, settings, cast, and characters.

The Marvel Universe is a fictional universe where the stories in most American comic book titles and other media published by Marvel Comics take place. Super-teams such as the Avengers, the X-Men, the Fantastic Four, the Guardians of the Galaxy, the Defenders, the Midnight Sons, and many Marvel superheroes live in this universe, including characters such as Spider-Man, Iron Man, Thor, the Hulk, Ant-Man, the Wasp, Captain America, Wolverine, Captain Marvel, Black Panther, Doctor Strange, Scarlet Witch, Vision, Black Widow, Ghost Rider, Blade, the Silver Surfer, Nova, Daredevil, Iron Fist, the Moon Knight, the Punisher and Deadpool, among numerous others. It also contains well-known supervillains such as Doctor Doom, Magneto, Thanos, Loki, Green Goblin, Kingpin, Red Skull, Ultron, Doctor Octopus, the Mandarin, MODOK, Carnage, Apocalypse, Hela, Ronan the Accuser, Kang, Mephisto, Dormammu, Annihilus and Galactus.

The Mickey Mouse universe is a fictional shared universe which is the setting for stories involving Disney cartoon characters Mickey and Minnie Mouse, Pluto, Goofy, and many other characters. The universe originated from the Mickey Mouse animated short films produced by Disney starting in 1928, but its first consistent version was created by Floyd Gottfredson in the Mickey Mouse newspaper comic strip. Real-world versions also exist in Disneyland and Tokyo Disneyland, called Mickey's Toontown.

Middle-earth is the fictional setting of much of the English writer J. R. R. Tolkien's legendarium. The term is equivalent to the term Miðgarðr of Norse mythology and Middangeard in Old English works including Beowulf, describing the human-inhabited world, that is, the central continent of the Earth in Tolkien's imagined mythological past. Tolkien's most widely read works, The Hobbit and The Lord of the Rings, are set entirely in Middle-earth; "Middle-earth" has also become a short-hand for the legendarium and Tolkien's fictional take on the world.

The MonsterVerse is an American multimedia franchise and shared fictional universe that is centered on a series of monster films featuring Godzilla and King Kong, produced by Legendary Entertainment and co-produced and distributed by Warner Bros. Pictures. The first installment was Godzilla (2014), a reboot of the Godzilla franchise, which was followed by Kong: Skull Island (2017), a reboot of the King Kong franchise, Godzilla: King of the Monsters (2019), and Godzilla vs. Kong (2021). The franchise has grossed a combined $1.7 billion worldwide.

The Multiverse, within DC Comics publications, is a "cosmic construct" collecting many of the fictional universes in which the published stories take place. The worlds in this multiverse share a space and fate in common, and its structure has changed several times in the history of DC Comics. The Multiverse was originally created by Perpetua, who is the mother of the Monitor, Anti-Monitor and World Forger.

The fictional world in which the A Song of Ice and Fire novels by George R. R. Martin take place is divided into several continents, known collectively as The Known World.

The English author Thomas Hardy set all of his major novels in the south and southwest of England. He named the area "Wessex" after the medieval Anglo-Saxon kingdom that existed in this part of that country prior to the unification of England by Æthelstan. Although the places that appear in his novels actually exist, in many cases he gave the place a fictional name. For example, Hardy's home town of Dorchester is called Casterbridge in his books, notably in The Mayor of Casterbridge. In an 1895 preface to the 1874 novel Far From the Madding Crowd he described Wessex as "a merely realistic dream country".

Tommy Westphall, portrayed by Chad Allen, is a minor character from the drama television series St. Elsewhere, which ran on NBC from 1982 to 1988.

The Way series is a trilogy of science fiction novels and one short story by American author Greg Bear published from 1985 to 1994. The first novel was Eon (1985), followed by a sequel, Eternity and a prequel, Legacy. It also includes The Way of All Ghosts, a short story that falls between Legacy and Eon.

Witch World is a speculative fiction project of American writer Andre Norton, inaugurated by her 1963 novel Witch World and continuing more than four decades. Beginning in the mid-1980s, when she was about 75 years old, Norton recruited other writers to the project, and some books were published only after her death in 2005. The Witch World setting is one planet in a parallel universe where magic long ago superseded science; early in the fictional history it is performed exclusively by women. The series began as a hybrid of science fiction and sword and sorcery but for the most part it combines the latter with high fantasy.