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** Quidditch, originally a fictional sport exclusive to the series, became a real thing in 2005 when it was played in a Middlebury, Vermont game. It was originally named Muggle Quidditch to distinguish it from its fictional counterpart, and then renamed Quadball in 2020 to for copyright reasons and to distance it from Rowling's political views. Then in 2015, a new [semi]-professional league was born under the name of Major League Quidditch, which is played primarily in the Midwestern and Northeastern U.S., but also has teams in the Deep South and Ontario, Canada.
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** Quidditch, originally a fictional sport exclusive to the series, became a real thing in 2005 when it was played in a Middlebury, Vermont game. It was originally named Muggle Quidditch to distinguish it from its fictional counterpart, and then renamed Quadball in 2020 2021 to for copyright reasons and to distance it from Rowling's political views. Then in 2015, a new It even gained its own [semi]-professional league was born under the name of known as Major League Quidditch, Quadball, which is played primarily in the Midwestern and Northeastern U.S., but also has teams in the Deep South and Ontario, Canada.
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** Quidditch, originally a fictional sport exclusive to the series, recently became a real thing in 2005 when it was played in a Middlebury, Vermont game, though it became known as Muggle Quidditch to distinguish it from the fictional version. Then in 2015, a new [semi]-professional league was born under the name of Major League Quidditch, which is played primarily in the Midwestern and Northeastern U.S., but also has teams in the Deep South and Ontario, Canada.
to:
** Quidditch, originally a fictional sport exclusive to the series, recently became a real thing in 2005 when it was played in a Middlebury, Vermont game, though it became known as game. It was originally named Muggle Quidditch to distinguish it from the its fictional version.counterpart, and then renamed Quadball in 2020 to for copyright reasons and to distance it from Rowling's political views. Then in 2015, a new [semi]-professional league was born under the name of Major League Quidditch, which is played primarily in the Midwestern and Northeastern U.S., but also has teams in the Deep South and Ontario, Canada.
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* In Lauren Child's Clarice Bean novels (not picture books) Clarice is a fan of "Ruby Redford" books about a schoolgirl super-spy. Due to reader demand, Child has since written several Ruby Redford books.
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* In Lauren Child's Clarice Bean novels (not picture books) ''Literature/ClariceBean'': Clarice is a fan of "Ruby Redford" books about a schoolgirl super-spy. Due to reader demand, Child Creator/LaurenChild has since written several Ruby Redford ''Ruby Redford'' books.
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* ''Literature/{{Twilight}}'' - The Bella Italia restaurant in Port Angeles, Washington, [[http://www.peninsuladailynews.com/article/20080801/NEWS/808010304 started serving mushroom ravioli]] only after fans started requesting it, since ''Bella'' orders it during a diner with Edward.
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* ''Literature/{{Twilight}}'' ''Literature/TheTwilightSaga'' - The Bella Italia restaurant in Port Angeles, Washington, [[http://www.peninsuladailynews.com/article/20080801/NEWS/808010304 started serving mushroom ravioli]] only after fans started requesting it, since ''Bella'' orders it during a diner with Edward.
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* Inventor and [=SpaceX=] CEO Elon Musk named two of the company's spaceport drone ships ''Just Read the Instructions'' and ''Of Course I Still Love You'', after ships from Creator/IainBanks' novel ''Literature/ThePlayerOfGames''.
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* Inventor and [=SpaceX=] CEO Elon Musk named two of the company's autonomous spaceport drone ships ''Just Read the Instructions'' and ''Of Course I Still Love You'', after ships from Creator/IainBanks' novel ''Literature/ThePlayerOfGames''.''Literature/ThePlayerOfGames'' and a third was named ''A Shortfall of Gravitas'', inspired by the ship ''Experiencing a Significant Gravitas Shortfall'' in ''Literature/LookToWindward''.
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* ''Literature/TwentyThousandLeaguesUnderTheSea'', published 1869, featured the fantastic idea of a nuclear-powered submarine. In 1954, the world's first nuclear sub was named the ''USS Nautilus'' in honor of the book.
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* ''Literature/TwentyThousandLeaguesUnderTheSea'', published 1869, featured the fantastic idea of a nuclear-powered high-tech submarine. In 1954, the world's first nuclear sub was named the ''USS Nautilus'' in honor of the book. It should be noted that there was at least one sub with that name before the book.
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Just For Pun is a disambiguation
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** [[http://www.college-of-arms.gov.uk/news-grants/newsletter/item/27-september-2010 Terry Pratchett's coat of arms]] contains an [[http://en.wikipedia.org/wiki/Ankh Egyptian cross]] and an [[http://en.wikipedia.org/wiki/Morepork owl]] (compare [[http://mostcuriousthing.com/trumpets/dwinfo/dictionary/ankhmorpork.htm Ankh-Morpork coat of arms]]), as well as the motto "Noli timere messorem", or "Do not fear the reaper" (compare [[http://www.paulkidby.com/colourprints/index.html Mort's motto]] in [[DogLatin Latatian]], "Non timetis messor") and two books in red (i.e. "[[JustForPun read]]").
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** [[http://www.college-of-arms.gov.uk/news-grants/newsletter/item/27-september-2010 Terry Pratchett's coat of arms]] contains an [[http://en.wikipedia.org/wiki/Ankh Egyptian cross]] and an [[http://en.wikipedia.org/wiki/Morepork owl]] (compare [[http://mostcuriousthing.com/trumpets/dwinfo/dictionary/ankhmorpork.htm Ankh-Morpork coat of arms]]), as well as the motto "Noli timere messorem", or "Do not fear the reaper" (compare [[http://www.paulkidby.com/colourprints/index.html Mort's motto]] in [[DogLatin Latatian]], "Non timetis messor") and two books in red (i.e. "[[JustForPun read]]")."read").
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** The CD ''From the Discworld'' by Dave Greenslade, which mostly consists of Disc-themed instrumental peices, has two songs. One is an original song about Ankh-Morpork. The other is a defictionalisation of Nanny Ogg's second-favourite song, "A Wizard's Staff Has a Knob on the End". (It could have been worse; it could have been her ''favourite'' song.)
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A very noteworthy tidbit that actually makes the real life more interesting. It is known as the dim effect. And it belongs to that page since it doesn't involve a product based on a fictional item and we sure agree that a race doesn't qualify.
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* The titular race from Literature/TheHobbit was Defictionalized when paleontologists discovered [[http://en.wikipedia.org/wiki/Homo_floresiensis Homo floresiensis]], a species of 3-foot tall hominins that lived on the Flores island roughly a thousand years ago.
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* ''Literature/OldMortality'': Tillietudlem, Lady Margaret's castle, is fictional but possibly inspired by [[https://en.wikipedia.org/wiki/Craignethan_Castle Craignethan Castle]]. Years later a railway station and a small village in South Lanarkshire were named after Tillietudlem.
%%For the sake of avoiding repetition, we're keeping all the ''Literature/HarryPotter'' stuff under film.
* A few things in ''Literature/{{Discworld}}'' had since been turned into actual products. These include the ''Literature/WheresMyCow?'' and ''Literature/TheWorldOfPoo'' children's books, and various badges (City Watch, Guilds, {{Uberwald}} Blood Donor Group...)
** The stamps introduced in ''Literature/GoingPostal'', and mentioned in later books. Which now exist, complete with sports, rare limited editions and a quarterly magazine for "flatalists".
** Pterry mentions an example himself in the Author's Note to ''Wintersmith'': a group of fans who danced the Dark Morris for him in Chicago.
** The card game ''Cripple Mr. Onion'' has been turned into a playable game by fans. Several times over, in fact, because the rules seen in the books are vague enough to allow for a lot of interpretation.
** You can also buy Nanny Ogg's Cookbook. Not entirely defictionalization, as this is not the same book as the one she wrote in ''Literature/{{Maskerade}}'', which was called ''The Joye of Snackes''.
** You can get the ''Thud'' game. Thud was based on real life Tafl Games, although the rules ''were'' altered a bit. And the game appeared in real life first and ''then'' got added to the books.
** [[http://www.college-of-arms.gov.uk/news-grants/newsletter/item/27-september-2010 Terry Pratchett's coat of arms]] contains an [[http://en.wikipedia.org/wiki/Ankh Egyptian cross]] and an [[http://en.wikipedia.org/wiki/Morepork owl]] (compare [[http://mostcuriousthing.com/trumpets/dwinfo/dictionary/ankhmorpork.htm Ankh-Morpork coat of arms]]), as well as the motto "Noli timere messorem", or "Do not fear the reaper" (compare [[http://www.paulkidby.com/colourprints/index.html Mort's motto]] in [[DogLatin Latatian]], "Non timetis messor") and two books in red (i.e. "[[JustForPun read]]").
* In ''Literature/TheMortalInstruments'' and ''Literature/TheInfernalDevices'' there was a book called ''Literature/TheShadowhunterCodex'' which was a textbook for new Shadowhunters with information about Shadowhunter life. Creator/CassandraClare later really wrote the book as a companion to the other books in ''Literature/TheShadowhunterChronicles''.
* Around the time the movie adaptation of Creator/JohnIrving's novel ''A Widow For A Year'' came out, the children's book ''A Sound Like Trying Not to Make a Sound'' (featured in the novel and the movie) was published for real.
* A Creator/GeorgeOrwell essay describing the "Moon Under Water", his idea of a perfect British pub, inspired (at least in theory) the creation of the J.D. Wetherspoon chain. A number of Wetherspoon's pubs are indeed called the Moon Under Water, and others have "Moon" themed names.
* One of the novels of Creator/KurtVonnegut's fictional author Kilgore Trout was ''Venus on the Half-Shell''. Creator/PhilipJoseFarmer later wrote an actual novel title ''Venus on the Half-Shell'' that he published under the pseudonym Kilgore Trout. [[note]]Some critics thought Kilgore was Vonnegut and the book a "worthy addition to his canon" pissing off Vonnegut no end, even though he had given permission to Farmer to use the name.[[/note]]
** In a lesser case, [[http://www1.lsbu.ac.uk/water/ice_ix.html an Ice-9 was discovered]], even if not as lethal as the one from ''Literature/CatsCradle''.
* In ''Literature/TimeEnoughForLove'' by [[Creator/RobertAHeinlein Robert Heinlein]], the FramingStory is that the main character, Lazarus Long, is reluctantly recounting his life story. The computer recording his recollections is instructed to select quotable portions and compile them into a book of his quotes. These are presented within the book in interlude sections. However, in 1978 and 1988 [[http://en.wikipedia.org/wiki/The_Notebooks_of_Lazarus_Long actual books]] were published of only the quotes.
* Creator/HPLovecraft:
** It's quite easy to obtain Miskatonic University attire. Go Cephalopods!
** The H.P. Lovecraft Historical Society has some very impressive reproductions of [[http://www.cthulhulives.org/store/store.lasso?1=product&2=33176 assorted]] [[http://www.cthulhulives.org/store/store.lasso?1=product&2=32771 blasphemous]] [[http://www.cthulhulives.org/store/store.lasso?1=product&2=45 idols]], [[http://www.cthulhulives.org/store/store.lasso?1=product&2=32831 pages from the Necronomicon]], and [[http://www.cthulhulives.org/store/store.lasso?1=product&2=50 Professor Angell's Box]], a very expensive, detailed and exhaustively complete copy of the box of documents and props from "Literature/TheCallOfCthulhu".
** The Necronomicon is listed in the Ohio University Library card catalog. Creator/LSpragueDeCamp, fantasy author and linguist, acted as Abdul Alhazred's "translator".
** There are even a few published books calling themselves the Necronomicon. Most are little more than black-magic occultism books that will make passing references to Cthulhu at best, and no reference to Lovecraft at all at worst. The most famous is the [[http://en.wikipedia.org/wiki/Simon_Necronomicon Simon Necronomicon]], but one that is closest to what the fictional Necronomicon contained is probably Necronomicon: the Wanderings of Alhazred, as written by occult writer Donald Tyson.
* The titular race from Literature/TheHobbit was Defictionalized when paleontologists discovered [[http://en.wikipedia.org/wiki/Homo_floresiensis Homo floresiensis]], a species of 3-foot tall hominins that lived on the Flores island roughly a thousand years ago.
* Creator/MichaelChabon likes this kind of thing:
** In the novel ''Literature/TheAmazingAdventuresOfKavalierAndClay,'' the protagonists create a comic book series called ''The Escapist.'' Then a 6-issue miniseries came out, printing various comic book stories from ''The Escapist,'' from the '40s through the present, with explanatory articles by real important figures in the comic book world, about the series' various publishers, and its place in the changing trends and values in the history of comics.
** ''Literature/TelegraphAvenue'' had a record store featured in the book defictionalised as part of the book's advertising campaign. An [[http://www.huffingtonpost.com/2012/08/13/brokeland-records-_n_1773667.html?utm_hp_ref=books article]] on the campaign even cites this page.
* The ''Literature/TheWarAgainstTheChtorr'' series features the Mode Training, which is kind of self-help training on acid. Guess what? David Gerrold, the author, is building an ''actual'' Mode Training program. Oddly, one of the books has him set aside some pages to point out that Mode Training is fictional and he never wants to see anyone creating "Mode Training" and charging people money for it, because it was rather dangerous. Perhaps this meant ''other'' people.
* Several segments of the titular play of Robert W. Chambers' short story collection ''King in Yellow'' have been later written by other authors. Thom Ryng is the possibly the only one who has not only written the whole thing, but also had it actually played on stage. No reports of insanity have been made of the readers, but save for a few anachronisms in language and style, it's a very good and suitably bleak story of how YouCantFightFate in a world inhabited by monsters.
* The ''[[Literature/{{Dragonlance}} Dragonlance Chronicles]]'' and subsequent campaign setting use the Inn of the Last Home as a starting point, which is known for Otik's famous spiced potatoes. Enthusiastic ''Dragonlance'' fans have created several recipes for the potatoes and one such recipe was listed as a notation in the ''Annotated Dragonlance Chronicles''.
* In ''Literature/DragonlanceTheNewAdventures'', Sindri writes a guidebook titled ''A Practical Guide to Dragons'', which is mentioned InUniverse in the Suncatcher Trilogy. It was published in real life just after the first book of that trilogy.
* ''Literature/AroundTheWorldInEightyDays'' inspired real people, like reporter [[ActionGirl Nellie Bly]], to see if they could circumnavigate the globe in eighty days or less. (She could, and did, and wrote her own book, ''Literature/AroundTheWorldInSeventyTwoDays.'')
* A fan organization of Imperial cosplayers -- the [[http://starwars.wikia.com/wiki/501st_Legion_(organization) 501st Legion]], Vader's Fist -- was reverse-defictionalized first by Creator/TimothyZahn, who wrote of the [[BadassArmy Empire's finest]], the [[http://starwars.wikia.com/wiki/501st_Legion 501st]], Lord Vader's personal legion. Others in the ''Franchise/StarWarsExpandedUniverse'' followed suit. The clones who marched with pre-Mustafar Vader to massacre Jedi in ''Film/RevengeOfTheSith''? The 501st. Needless to say, the cosplayers are very pleased.
** They were Cannonized. Ba-dum tiss.
* Andrea Camilleri's books are set in Vigata, a fictional town in UsefulNotes/{{Sicily}}, which is based on Porto Empedocle (Camilleri's birthplace) and Licata. In 2003, the city administration of Porto Empedocle added the fictional name to the tourist signs, which would then read ''Porto Empedocle Vigata'', without actually changing the city's name. The decision has been reversed as of 2009.
* Fans have created real-world playable rules and decks for [[http://www.pagat.com/invented/sabacc.html Sabacc]], a card game played in the ''Franchise/StarWarsExpandedUniverse''.
* ''Franchise/TheHitchhikersGuideToTheGalaxy'' -- The Guide itself, envisioned by Creator/DouglasAdams as a digital collaborative resource encompassing life, the Universe, and everything and contributed to by countless independent researchers, was created as [[http://www.h2g2.com/ a real-life online encyclopedia]] by Creator/DouglasAdams himself in 1999. It can be seen as a spiritual predecessor to Website/ThatOtherWiki (due to the broadness of content) and even Website/TVTropes (due to its similarly casual tone) itself.
** Fan-made recipes for the series' "Pan-Galactic GargleBlaster" drink have been circulating since the start.
** When the Kindle was released with full web access, especially access to Website/ThatOtherWiki, most people understood that meant ''Franchise/TheHitchhikersGuideToTheGalaxy'' had been truly defictionalized. [[http://xkcd.com/548/ XKCD]] points this out. Also, some people went and [[http://www.adafruit.com/blog/2009/03/12/first-laser-etched-kindle-2-the-hitchhikers-guide-to-the-galaxy-dont-panic/ customized their Kindle]] to look more like the 'real' thing.
** The film ''Boys & Girls Guide to Getting Down'' is in a strangely similar format.
* Creator/OrsonScottCard wrote a book called ''Literature/SpeakerForTheDead'', in which the speaker researches the life of the deceased, then tells the deceased's life story as they would have told it. According to OSC, people have started doing this in real life, and apparently, it is a very emotional experience.
* ''Literature/{{Twilight}}'' - The Bella Italia restaurant in Port Angeles, Washington, [[http://www.peninsuladailynews.com/article/20080801/NEWS/808010304 started serving mushroom ravioli]] only after fans started requesting it, since ''Bella'' orders it during a diner with Edward.
* "Poohsticks", introduced by that name in Creator/AAMilne's ''Literature/WinnieThePooh'' [[note]]and portrayed in the Creator/{{Disney}} short ''A Day for Eeyore''[[/note]] is a simple game doubtless imitated by many readers/viewers who come across it: Drop two sticks (or fir cones as were first used) into a river on one side of the bridge, first one out on the other side wins). Who'd have thought it could lead to an annual [[http://en.wikipedia.org/wiki/Poohsticks#World_Poohsticks_Championships World Poohsticks Championship]] though?
* Literature/SherlockHolmes famously lived at 221B Baker Street, which was turned into an actual address and is now a museum for Holmes fans. (Originally, Baker Street didn't extend far enough to ''have'' a #221, which is no doubt why Doyle chose that number.)
* Michael Muhammad Knight wrote a book called ''The Taqwacores'' about a then-fictional Muslim punk scene. The idea struck the fancy of a number of punk-minded Muslim kids who proceeded to actually bring the Taqwacore scene into existence.
* ''Icehouse'', the game and game system from Looney Labs, started out as an idealized fictional game in Andrew Looney's short novel ''The Empty City''.
* ''Literature/{{Goosebumps}}'': Goldberger Doll corporation started manufacturing and selling real Slappy the Dummy ventriloquist dolls after getting a request from a young fan.
* The Arthur C. Clarke novel ''Literature/TheCityAndTheStars'' begins with our heroes playing a virtual reality adventure game. This wasn't a new concept, even in 1956 when the book was published. However, two small details indicate that Clarke thought the concept through more than his colleagues: the game contains a bona fide Quest Arrow showing our heroes where to go; and Alvin causes the game to crash by attempting SequenceBreaking. After the game crashes, the other players (who are each in their own apartments, connected together by a telecommunication link) accuse Alvin of [[{{Griefer}} constantly crashing their games]]. He honestly wants to see the scenery [[MinusWorld outside]] the dungeons they were adventuring in, but [[DevelopersForesight nobody thought to implement that]], since Alvin is the only non-agoraphobic man in the city.
* U.S. Robotics, a company that manufactures dialup modems, took its name from the fictional U.S. Robots and Mechanical Men corporation featured in ''Literature/IRobot'', though the company has never manufactured robots itself.
* The Niven & Barnes novel, ''Literature/DreamPark'' has experienced two such attempts:
** The Dream Park, a holographic [=LARPing=] theme park, was built as a fan-created corporation intended to establish the titular park. The organization unfortunately went bankrupt in 1999.
** The novel's game-regulating organization, the IFGS, actually has been Defictionalized into a [=LARP=]ing club that stages its games outdoors.
* An in-universe example in Creator/PoulAnderson's "Critique of Impure Reason" -- Tunny and Janet fake up a novel and its criticism to persuade the robot to go to Mercury and mine. But other people get wind of it, and at the end, Tunny rolls out the book for popular reading and hopes of a new fiction rennaissance.
* In UsefulNotes/WorldWarTwo, the US Navy took the idea that became the Command Information Center "specifically, consciously, and directly" from Doc Smith's Literature/{{Lensman}} novels.
* In Literature/SnowCrash, the main character Hiro Protagonist uses a program called Earth, which later was an inspiration for Google Earth
* It's possible to get mockingjay pins inspired by ''Literature/TheHungerGames'' series.
* Fan merch for the Literature/{{Dragaera}} novels includes copies of the menu at Valabar's, as per the dining scenes in ''Literature/{{Dzur}}''. Fans of the series have sometimes attempted to reproduce the recipes as well, albeit with substitutions for things like goslingroot or rednuts.
* In Lauren Child's Clarice Bean novels (not picture books) Clarice is a fan of "Ruby Redford" books about a schoolgirl super-spy. Due to reader demand, Child has since written several Ruby Redford books.
* The popular sixteenth-century Spanish novel ''Las sergas de Esplandián'' described a strange, mythical land inhabited by beautiful Amazons. The name of this place? California. Spanish explorers named what they thought was an island (present-day Baja California) after the book. And five hundreds years later, California does have a reputation for being a strange land with beautiful women, though sadly not Amazons.
* Literature/RobinsonCrusoe: In the 1960s one of the islands near South America was named Robinson Crusoe Island as a homage to the novel in which Crusoe is stuck on a tropical isle.
* Inventor and [=SpaceX=] CEO Elon Musk named two of the company's spaceport drone ships ''Just Read the Instructions'' and ''Of Course I Still Love You'', after ships from Creator/IainBanks' novel ''Literature/ThePlayerOfGames''.
* ''Literature/PaperTowns'':
** The nerdfighters have made real-life versions of many things in it, like go-fast bars and the shopping list, as partially documented in [[https://www.youtube.com/watch?v=arQkK0PH748 this]] WebVideo/VlogBrothers episode.
** Also, Omnictionary was once made into a real website; it was a wiki for Creator/JohnGreen and the activities and history of [[WebVideo/VlogBrothers Nerdfighteria]], although it's now disbanded.
* Creator/CatherynneMValente's novel ''Literature/{{Palimpsest}}'' featured a fictional children's novel [[ShowWithinAShow within the story]] called ''Literature/TheGirlWhoCircumnavigatedFairylandInAShipOfHerOwnMaking''. Valente subsequently wrote the novel in real life, and several sequels.
* In the 1970s, the Romanian government made efforts to attract a larger number of tourists from Western Europe as a source of hard currency. They naturally received inquiries about visiting the castle from ''Literature/{{Dracula}}'', probably the most famous fictional work set in the country. Unfortunately, Bram Stoker had never even visited Romania, and there had never been a castle at the Borgo Pass as described in the novel. So the Romanians built a modern hotel designed to look externally like a medieval castle, and promoted it as Dracula's Castle. It still exists as the [[http://www.hotelcasteldracula.ro/ Hotel Castel Dracula]]. To increase the spooky atmosphere, the hotel's grounds included a genuine local graveyard.
* ''Literature/TwentyThousandLeaguesUnderTheSea'', published 1869, featured the fantastic idea of a nuclear-powered submarine. In 1954, the world's first nuclear sub was named the ''USS Nautilus'' in honor of the book.
* In one story of ''Literature/TheCyberiad'' a genius constructor pitied an exiled tyrant and gave him a miniature kingdom in a box -- to rule, punish and show mercy to. This toy inspired the video game ''Micropolis'' better known as ''VideoGame/SimCity'' -- the one that created SimulationGame genre. However, the story centers not on urban planning, but on the morality of VideogameCrueltyPotential, and also suggests an outrageous VideogameCrueltyPunishment.
* One of the ''Literature/CaptainUnderpants'' books has a look into George and Harold's origins as best friends and creating comics. One of their comics was known as Dog Man, and years later, Dav Pilkey himself wrote and published a separate Dog Man book!
** In the mid-2000s Scholastic sold a version of the 3D Hypno Ring from ''Series/CaptainUnderpants'' through their Scholastic Book Club Service. It even included an owner's manual with the warning not to dump water on the head of a hypnotized person.
* The small French town of Illiers, near Paris, inspired Combray in childhood resident Creator/MarcelProust's ''A la recherche de temps perdu''. To make sure tourists know where to go for their madeleine moments, it has renamed itself Illiers-Combray.
* The protagonist of ''Literature/ThePrincessDiaries'' "wrote" a romance novel called ''Ransom My Heart'', excerpts of which were included in the tenth book. Then the author published the whole thing as a standalone book.
* Creator/AnnLeckie seems to be a fan of this. When touring to promote each book in her ''Literature/ImperialRadch'' series she gave out pins to fans, like the Radchaai wear, and has offered a limited supply for sale on Etsy a few times. When promoting ''Provenance'' she signed vestiges.
* Creator/KimNewman's novel ''Literature/TheSecretsOfDrearcliffGrangeSchool'' is a defictionalisation of a fictional novel mentioned in his earlier novel ''Literature/AnEnglishGhostStory''.
* A lot of the SpySpeak created by Creator/JohnLeCarre was adopted by real-life intelligence agencies, most noticeably "Tradecraft" (the knowledge base necessary to be a spy) and "TheMole".
* ''Literature/HarryPotter'':
** The series includes a fair amount of FoodPorn, so naturally some of its more interesting foodstuffs have been manufactured in the real world, including Butterbeer, Chocolate Frogs, and Bertie Bott's Every Flavor Beans.
** J.K. Rowling wrote and published real-life versions of the [[FictionalDocument fictional books]] ''Literature/FantasticBeastsAndWhereToFindThem'', ''Literature/QuidditchThroughTheAges'' and ''Literature/TheTalesOfBeedleTheBard''
** Quidditch, originally a fictional sport exclusive to the series, recently became a real thing in 2005 when it was played in a Middlebury, Vermont game, though it became known as Muggle Quidditch to distinguish it from the fictional version. Then in 2015, a new [semi]-professional league was born under the name of Major League Quidditch, which is played primarily in the Midwestern and Northeastern U.S., but also has teams in the Deep South and Ontario, Canada.
* Rainbow Rowell's ''Fangirl'' includes the fictional Simon Snow novels, an {{Expy}} of Literature/HarryPotter; the protagonist Cath writes a lengthy fan fiction about her own version of Simon's eighth and final year at school, called "Carry On, Simon". Rowell later wrote a full novel set in the Simon Snow universe called ''Literature/CarryOn'' – however, the book is not "Carry On, Simon" itself: rather, it is Simon's final year if written by Rowell as herself, rather than as Cath or as in-universe author Gemma T Leslie. ''Literature/CarryOn'' spawned sequels of its own, ''Wayward Son'' and the upcoming ''Any Way the Wind Blows''.
* Walter Tevis' 1959 novel ''The Hustler'' (adapted into the [[Film/TheHustler1961 1961 film of the same name]]) has legendary pool player Minnesota Fats as its antagonist. Actual pool hustler Rudolf Wanderone changed his name from New York Fats to Minnesota Fats after the success of the book and film. He then claimed that the fictional character was based on him, which Tevis and the filmmakers both denied.
----
%%For the sake of avoiding repetition, we're keeping all the ''Literature/HarryPotter'' stuff under film.
* A few things in ''Literature/{{Discworld}}'' had since been turned into actual products. These include the ''Literature/WheresMyCow?'' and ''Literature/TheWorldOfPoo'' children's books, and various badges (City Watch, Guilds, {{Uberwald}} Blood Donor Group...)
** The stamps introduced in ''Literature/GoingPostal'', and mentioned in later books. Which now exist, complete with sports, rare limited editions and a quarterly magazine for "flatalists".
** Pterry mentions an example himself in the Author's Note to ''Wintersmith'': a group of fans who danced the Dark Morris for him in Chicago.
** The card game ''Cripple Mr. Onion'' has been turned into a playable game by fans. Several times over, in fact, because the rules seen in the books are vague enough to allow for a lot of interpretation.
** You can also buy Nanny Ogg's Cookbook. Not entirely defictionalization, as this is not the same book as the one she wrote in ''Literature/{{Maskerade}}'', which was called ''The Joye of Snackes''.
** You can get the ''Thud'' game. Thud was based on real life Tafl Games, although the rules ''were'' altered a bit. And the game appeared in real life first and ''then'' got added to the books.
** [[http://www.college-of-arms.gov.uk/news-grants/newsletter/item/27-september-2010 Terry Pratchett's coat of arms]] contains an [[http://en.wikipedia.org/wiki/Ankh Egyptian cross]] and an [[http://en.wikipedia.org/wiki/Morepork owl]] (compare [[http://mostcuriousthing.com/trumpets/dwinfo/dictionary/ankhmorpork.htm Ankh-Morpork coat of arms]]), as well as the motto "Noli timere messorem", or "Do not fear the reaper" (compare [[http://www.paulkidby.com/colourprints/index.html Mort's motto]] in [[DogLatin Latatian]], "Non timetis messor") and two books in red (i.e. "[[JustForPun read]]").
* In ''Literature/TheMortalInstruments'' and ''Literature/TheInfernalDevices'' there was a book called ''Literature/TheShadowhunterCodex'' which was a textbook for new Shadowhunters with information about Shadowhunter life. Creator/CassandraClare later really wrote the book as a companion to the other books in ''Literature/TheShadowhunterChronicles''.
* Around the time the movie adaptation of Creator/JohnIrving's novel ''A Widow For A Year'' came out, the children's book ''A Sound Like Trying Not to Make a Sound'' (featured in the novel and the movie) was published for real.
* A Creator/GeorgeOrwell essay describing the "Moon Under Water", his idea of a perfect British pub, inspired (at least in theory) the creation of the J.D. Wetherspoon chain. A number of Wetherspoon's pubs are indeed called the Moon Under Water, and others have "Moon" themed names.
* One of the novels of Creator/KurtVonnegut's fictional author Kilgore Trout was ''Venus on the Half-Shell''. Creator/PhilipJoseFarmer later wrote an actual novel title ''Venus on the Half-Shell'' that he published under the pseudonym Kilgore Trout. [[note]]Some critics thought Kilgore was Vonnegut and the book a "worthy addition to his canon" pissing off Vonnegut no end, even though he had given permission to Farmer to use the name.[[/note]]
** In a lesser case, [[http://www1.lsbu.ac.uk/water/ice_ix.html an Ice-9 was discovered]], even if not as lethal as the one from ''Literature/CatsCradle''.
* In ''Literature/TimeEnoughForLove'' by [[Creator/RobertAHeinlein Robert Heinlein]], the FramingStory is that the main character, Lazarus Long, is reluctantly recounting his life story. The computer recording his recollections is instructed to select quotable portions and compile them into a book of his quotes. These are presented within the book in interlude sections. However, in 1978 and 1988 [[http://en.wikipedia.org/wiki/The_Notebooks_of_Lazarus_Long actual books]] were published of only the quotes.
* Creator/HPLovecraft:
** It's quite easy to obtain Miskatonic University attire. Go Cephalopods!
** The H.P. Lovecraft Historical Society has some very impressive reproductions of [[http://www.cthulhulives.org/store/store.lasso?1=product&2=33176 assorted]] [[http://www.cthulhulives.org/store/store.lasso?1=product&2=32771 blasphemous]] [[http://www.cthulhulives.org/store/store.lasso?1=product&2=45 idols]], [[http://www.cthulhulives.org/store/store.lasso?1=product&2=32831 pages from the Necronomicon]], and [[http://www.cthulhulives.org/store/store.lasso?1=product&2=50 Professor Angell's Box]], a very expensive, detailed and exhaustively complete copy of the box of documents and props from "Literature/TheCallOfCthulhu".
** The Necronomicon is listed in the Ohio University Library card catalog. Creator/LSpragueDeCamp, fantasy author and linguist, acted as Abdul Alhazred's "translator".
** There are even a few published books calling themselves the Necronomicon. Most are little more than black-magic occultism books that will make passing references to Cthulhu at best, and no reference to Lovecraft at all at worst. The most famous is the [[http://en.wikipedia.org/wiki/Simon_Necronomicon Simon Necronomicon]], but one that is closest to what the fictional Necronomicon contained is probably Necronomicon: the Wanderings of Alhazred, as written by occult writer Donald Tyson.
* The titular race from Literature/TheHobbit was Defictionalized when paleontologists discovered [[http://en.wikipedia.org/wiki/Homo_floresiensis Homo floresiensis]], a species of 3-foot tall hominins that lived on the Flores island roughly a thousand years ago.
* Creator/MichaelChabon likes this kind of thing:
** In the novel ''Literature/TheAmazingAdventuresOfKavalierAndClay,'' the protagonists create a comic book series called ''The Escapist.'' Then a 6-issue miniseries came out, printing various comic book stories from ''The Escapist,'' from the '40s through the present, with explanatory articles by real important figures in the comic book world, about the series' various publishers, and its place in the changing trends and values in the history of comics.
** ''Literature/TelegraphAvenue'' had a record store featured in the book defictionalised as part of the book's advertising campaign. An [[http://www.huffingtonpost.com/2012/08/13/brokeland-records-_n_1773667.html?utm_hp_ref=books article]] on the campaign even cites this page.
* The ''Literature/TheWarAgainstTheChtorr'' series features the Mode Training, which is kind of self-help training on acid. Guess what? David Gerrold, the author, is building an ''actual'' Mode Training program. Oddly, one of the books has him set aside some pages to point out that Mode Training is fictional and he never wants to see anyone creating "Mode Training" and charging people money for it, because it was rather dangerous. Perhaps this meant ''other'' people.
* Several segments of the titular play of Robert W. Chambers' short story collection ''King in Yellow'' have been later written by other authors. Thom Ryng is the possibly the only one who has not only written the whole thing, but also had it actually played on stage. No reports of insanity have been made of the readers, but save for a few anachronisms in language and style, it's a very good and suitably bleak story of how YouCantFightFate in a world inhabited by monsters.
* The ''[[Literature/{{Dragonlance}} Dragonlance Chronicles]]'' and subsequent campaign setting use the Inn of the Last Home as a starting point, which is known for Otik's famous spiced potatoes. Enthusiastic ''Dragonlance'' fans have created several recipes for the potatoes and one such recipe was listed as a notation in the ''Annotated Dragonlance Chronicles''.
* In ''Literature/DragonlanceTheNewAdventures'', Sindri writes a guidebook titled ''A Practical Guide to Dragons'', which is mentioned InUniverse in the Suncatcher Trilogy. It was published in real life just after the first book of that trilogy.
* ''Literature/AroundTheWorldInEightyDays'' inspired real people, like reporter [[ActionGirl Nellie Bly]], to see if they could circumnavigate the globe in eighty days or less. (She could, and did, and wrote her own book, ''Literature/AroundTheWorldInSeventyTwoDays.'')
* A fan organization of Imperial cosplayers -- the [[http://starwars.wikia.com/wiki/501st_Legion_(organization) 501st Legion]], Vader's Fist -- was reverse-defictionalized first by Creator/TimothyZahn, who wrote of the [[BadassArmy Empire's finest]], the [[http://starwars.wikia.com/wiki/501st_Legion 501st]], Lord Vader's personal legion. Others in the ''Franchise/StarWarsExpandedUniverse'' followed suit. The clones who marched with pre-Mustafar Vader to massacre Jedi in ''Film/RevengeOfTheSith''? The 501st. Needless to say, the cosplayers are very pleased.
** They were Cannonized. Ba-dum tiss.
* Andrea Camilleri's books are set in Vigata, a fictional town in UsefulNotes/{{Sicily}}, which is based on Porto Empedocle (Camilleri's birthplace) and Licata. In 2003, the city administration of Porto Empedocle added the fictional name to the tourist signs, which would then read ''Porto Empedocle Vigata'', without actually changing the city's name. The decision has been reversed as of 2009.
* Fans have created real-world playable rules and decks for [[http://www.pagat.com/invented/sabacc.html Sabacc]], a card game played in the ''Franchise/StarWarsExpandedUniverse''.
* ''Franchise/TheHitchhikersGuideToTheGalaxy'' -- The Guide itself, envisioned by Creator/DouglasAdams as a digital collaborative resource encompassing life, the Universe, and everything and contributed to by countless independent researchers, was created as [[http://www.h2g2.com/ a real-life online encyclopedia]] by Creator/DouglasAdams himself in 1999. It can be seen as a spiritual predecessor to Website/ThatOtherWiki (due to the broadness of content) and even Website/TVTropes (due to its similarly casual tone) itself.
** Fan-made recipes for the series' "Pan-Galactic GargleBlaster" drink have been circulating since the start.
** When the Kindle was released with full web access, especially access to Website/ThatOtherWiki, most people understood that meant ''Franchise/TheHitchhikersGuideToTheGalaxy'' had been truly defictionalized. [[http://xkcd.com/548/ XKCD]] points this out. Also, some people went and [[http://www.adafruit.com/blog/2009/03/12/first-laser-etched-kindle-2-the-hitchhikers-guide-to-the-galaxy-dont-panic/ customized their Kindle]] to look more like the 'real' thing.
** The film ''Boys & Girls Guide to Getting Down'' is in a strangely similar format.
* Creator/OrsonScottCard wrote a book called ''Literature/SpeakerForTheDead'', in which the speaker researches the life of the deceased, then tells the deceased's life story as they would have told it. According to OSC, people have started doing this in real life, and apparently, it is a very emotional experience.
* ''Literature/{{Twilight}}'' - The Bella Italia restaurant in Port Angeles, Washington, [[http://www.peninsuladailynews.com/article/20080801/NEWS/808010304 started serving mushroom ravioli]] only after fans started requesting it, since ''Bella'' orders it during a diner with Edward.
* "Poohsticks", introduced by that name in Creator/AAMilne's ''Literature/WinnieThePooh'' [[note]]and portrayed in the Creator/{{Disney}} short ''A Day for Eeyore''[[/note]] is a simple game doubtless imitated by many readers/viewers who come across it: Drop two sticks (or fir cones as were first used) into a river on one side of the bridge, first one out on the other side wins). Who'd have thought it could lead to an annual [[http://en.wikipedia.org/wiki/Poohsticks#World_Poohsticks_Championships World Poohsticks Championship]] though?
* Literature/SherlockHolmes famously lived at 221B Baker Street, which was turned into an actual address and is now a museum for Holmes fans. (Originally, Baker Street didn't extend far enough to ''have'' a #221, which is no doubt why Doyle chose that number.)
* Michael Muhammad Knight wrote a book called ''The Taqwacores'' about a then-fictional Muslim punk scene. The idea struck the fancy of a number of punk-minded Muslim kids who proceeded to actually bring the Taqwacore scene into existence.
* ''Icehouse'', the game and game system from Looney Labs, started out as an idealized fictional game in Andrew Looney's short novel ''The Empty City''.
* ''Literature/{{Goosebumps}}'': Goldberger Doll corporation started manufacturing and selling real Slappy the Dummy ventriloquist dolls after getting a request from a young fan.
* The Arthur C. Clarke novel ''Literature/TheCityAndTheStars'' begins with our heroes playing a virtual reality adventure game. This wasn't a new concept, even in 1956 when the book was published. However, two small details indicate that Clarke thought the concept through more than his colleagues: the game contains a bona fide Quest Arrow showing our heroes where to go; and Alvin causes the game to crash by attempting SequenceBreaking. After the game crashes, the other players (who are each in their own apartments, connected together by a telecommunication link) accuse Alvin of [[{{Griefer}} constantly crashing their games]]. He honestly wants to see the scenery [[MinusWorld outside]] the dungeons they were adventuring in, but [[DevelopersForesight nobody thought to implement that]], since Alvin is the only non-agoraphobic man in the city.
* U.S. Robotics, a company that manufactures dialup modems, took its name from the fictional U.S. Robots and Mechanical Men corporation featured in ''Literature/IRobot'', though the company has never manufactured robots itself.
* The Niven & Barnes novel, ''Literature/DreamPark'' has experienced two such attempts:
** The Dream Park, a holographic [=LARPing=] theme park, was built as a fan-created corporation intended to establish the titular park. The organization unfortunately went bankrupt in 1999.
** The novel's game-regulating organization, the IFGS, actually has been Defictionalized into a [=LARP=]ing club that stages its games outdoors.
* An in-universe example in Creator/PoulAnderson's "Critique of Impure Reason" -- Tunny and Janet fake up a novel and its criticism to persuade the robot to go to Mercury and mine. But other people get wind of it, and at the end, Tunny rolls out the book for popular reading and hopes of a new fiction rennaissance.
* In UsefulNotes/WorldWarTwo, the US Navy took the idea that became the Command Information Center "specifically, consciously, and directly" from Doc Smith's Literature/{{Lensman}} novels.
* In Literature/SnowCrash, the main character Hiro Protagonist uses a program called Earth, which later was an inspiration for Google Earth
* It's possible to get mockingjay pins inspired by ''Literature/TheHungerGames'' series.
* Fan merch for the Literature/{{Dragaera}} novels includes copies of the menu at Valabar's, as per the dining scenes in ''Literature/{{Dzur}}''. Fans of the series have sometimes attempted to reproduce the recipes as well, albeit with substitutions for things like goslingroot or rednuts.
* In Lauren Child's Clarice Bean novels (not picture books) Clarice is a fan of "Ruby Redford" books about a schoolgirl super-spy. Due to reader demand, Child has since written several Ruby Redford books.
* The popular sixteenth-century Spanish novel ''Las sergas de Esplandián'' described a strange, mythical land inhabited by beautiful Amazons. The name of this place? California. Spanish explorers named what they thought was an island (present-day Baja California) after the book. And five hundreds years later, California does have a reputation for being a strange land with beautiful women, though sadly not Amazons.
* Literature/RobinsonCrusoe: In the 1960s one of the islands near South America was named Robinson Crusoe Island as a homage to the novel in which Crusoe is stuck on a tropical isle.
* Inventor and [=SpaceX=] CEO Elon Musk named two of the company's spaceport drone ships ''Just Read the Instructions'' and ''Of Course I Still Love You'', after ships from Creator/IainBanks' novel ''Literature/ThePlayerOfGames''.
* ''Literature/PaperTowns'':
** The nerdfighters have made real-life versions of many things in it, like go-fast bars and the shopping list, as partially documented in [[https://www.youtube.com/watch?v=arQkK0PH748 this]] WebVideo/VlogBrothers episode.
** Also, Omnictionary was once made into a real website; it was a wiki for Creator/JohnGreen and the activities and history of [[WebVideo/VlogBrothers Nerdfighteria]], although it's now disbanded.
* Creator/CatherynneMValente's novel ''Literature/{{Palimpsest}}'' featured a fictional children's novel [[ShowWithinAShow within the story]] called ''Literature/TheGirlWhoCircumnavigatedFairylandInAShipOfHerOwnMaking''. Valente subsequently wrote the novel in real life, and several sequels.
* In the 1970s, the Romanian government made efforts to attract a larger number of tourists from Western Europe as a source of hard currency. They naturally received inquiries about visiting the castle from ''Literature/{{Dracula}}'', probably the most famous fictional work set in the country. Unfortunately, Bram Stoker had never even visited Romania, and there had never been a castle at the Borgo Pass as described in the novel. So the Romanians built a modern hotel designed to look externally like a medieval castle, and promoted it as Dracula's Castle. It still exists as the [[http://www.hotelcasteldracula.ro/ Hotel Castel Dracula]]. To increase the spooky atmosphere, the hotel's grounds included a genuine local graveyard.
* ''Literature/TwentyThousandLeaguesUnderTheSea'', published 1869, featured the fantastic idea of a nuclear-powered submarine. In 1954, the world's first nuclear sub was named the ''USS Nautilus'' in honor of the book.
* In one story of ''Literature/TheCyberiad'' a genius constructor pitied an exiled tyrant and gave him a miniature kingdom in a box -- to rule, punish and show mercy to. This toy inspired the video game ''Micropolis'' better known as ''VideoGame/SimCity'' -- the one that created SimulationGame genre. However, the story centers not on urban planning, but on the morality of VideogameCrueltyPotential, and also suggests an outrageous VideogameCrueltyPunishment.
* One of the ''Literature/CaptainUnderpants'' books has a look into George and Harold's origins as best friends and creating comics. One of their comics was known as Dog Man, and years later, Dav Pilkey himself wrote and published a separate Dog Man book!
** In the mid-2000s Scholastic sold a version of the 3D Hypno Ring from ''Series/CaptainUnderpants'' through their Scholastic Book Club Service. It even included an owner's manual with the warning not to dump water on the head of a hypnotized person.
* The small French town of Illiers, near Paris, inspired Combray in childhood resident Creator/MarcelProust's ''A la recherche de temps perdu''. To make sure tourists know where to go for their madeleine moments, it has renamed itself Illiers-Combray.
* The protagonist of ''Literature/ThePrincessDiaries'' "wrote" a romance novel called ''Ransom My Heart'', excerpts of which were included in the tenth book. Then the author published the whole thing as a standalone book.
* Creator/AnnLeckie seems to be a fan of this. When touring to promote each book in her ''Literature/ImperialRadch'' series she gave out pins to fans, like the Radchaai wear, and has offered a limited supply for sale on Etsy a few times. When promoting ''Provenance'' she signed vestiges.
* Creator/KimNewman's novel ''Literature/TheSecretsOfDrearcliffGrangeSchool'' is a defictionalisation of a fictional novel mentioned in his earlier novel ''Literature/AnEnglishGhostStory''.
* A lot of the SpySpeak created by Creator/JohnLeCarre was adopted by real-life intelligence agencies, most noticeably "Tradecraft" (the knowledge base necessary to be a spy) and "TheMole".
* ''Literature/HarryPotter'':
** The series includes a fair amount of FoodPorn, so naturally some of its more interesting foodstuffs have been manufactured in the real world, including Butterbeer, Chocolate Frogs, and Bertie Bott's Every Flavor Beans.
** J.K. Rowling wrote and published real-life versions of the [[FictionalDocument fictional books]] ''Literature/FantasticBeastsAndWhereToFindThem'', ''Literature/QuidditchThroughTheAges'' and ''Literature/TheTalesOfBeedleTheBard''
** Quidditch, originally a fictional sport exclusive to the series, recently became a real thing in 2005 when it was played in a Middlebury, Vermont game, though it became known as Muggle Quidditch to distinguish it from the fictional version. Then in 2015, a new [semi]-professional league was born under the name of Major League Quidditch, which is played primarily in the Midwestern and Northeastern U.S., but also has teams in the Deep South and Ontario, Canada.
* Rainbow Rowell's ''Fangirl'' includes the fictional Simon Snow novels, an {{Expy}} of Literature/HarryPotter; the protagonist Cath writes a lengthy fan fiction about her own version of Simon's eighth and final year at school, called "Carry On, Simon". Rowell later wrote a full novel set in the Simon Snow universe called ''Literature/CarryOn'' – however, the book is not "Carry On, Simon" itself: rather, it is Simon's final year if written by Rowell as herself, rather than as Cath or as in-universe author Gemma T Leslie. ''Literature/CarryOn'' spawned sequels of its own, ''Wayward Son'' and the upcoming ''Any Way the Wind Blows''.
* Walter Tevis' 1959 novel ''The Hustler'' (adapted into the [[Film/TheHustler1961 1961 film of the same name]]) has legendary pool player Minnesota Fats as its antagonist. Actual pool hustler Rudolf Wanderone changed his name from New York Fats to Minnesota Fats after the success of the book and film. He then claimed that the fictional character was based on him, which Tevis and the filmmakers both denied.
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