* OlderThanRadio: After authors such as Ann Radcliffe and [[Literature/TheMonk Matthew Lewis]] popularized GothicFiction in the late eighteenth and early nineteenth centuries, hundreds of lesser known Gothic novels and condensed re-writes of better known Gothic novels were published in an attempt to cash in. This largely died down by the 1820s, but the large number of forgotten novels published by Minerva press (which also published Radcliffe's classic, ''Literature/TheMysteriesOfUdolpho'') is a testament to the massive popularity of Gothic novels at the turn of the nineteenth century. Indeed, many of these "trade Gothic" works can be bought from [[http://www.zittaw.com/ Zittaw Press]], [[http://www.udolphopress.com/ Udolpho Press]], and [[http://valancourtbooks.com/index2.html Valancourt Books]].
* ''Literature/TheDaVinciCode'' remained on best-seller lists for an obscene number of months, resulting in many copycat quest novels.
** ''The Da Vinci Code'' itself follows the pseudohistory/conspiracy book ''Holy Blood, Holy Grail'' (1982, republished 1996), [[XMeetsY merging it]] [[RecycledInSpace with Brown]]'s usual 'thriller starring male college professor and companion sexpot in an exotic European locale' formula.
* The incredible success of ''Literature/HarryPotter'' has led to a glut of children's fantasy and, while it isn't the first school for wizards, it is certainly the inspiration for many. ''Harry Potter''[='s=] success also persuaded authors and publishers to write longer and more complex young-adult literature. This is a very good example that [[TropesAreTools this isn't actually a bad thing]] -- the success of ''Harry Potter'' told authors and publishers that yes, young-adult literature can be enjoyed by a PeripheryDemographic of adults, and that adolescents ''do'' have enough of an attention span to read a DoorStopper novel if it interests them enough.[[note]]To put it in a bit of perspective, aside from a few examples like ''Literature/TheNeverendingStory'', young-adult novels were ''rarely'' above three hundred pages. Some publishers actually thought kids wouldn't have the attention span to read a book if it was over two hundred.[[/note]]
** And of course, there have been people claiming that ''Literature/HarryPotter'' itself ripped off something else, though what exactly it is varies between the detractor. They include: the infamous ''Literature/TheLegendOfRahAndTheMuggles'', ''[[Literature/EarthseaTrilogy A Wizard of Earthsea]]'', Creator/JaneYolen's ''Literature/WizardsHall'', ''TomBrownsSchoolDays'', ''Literature/GrooshamGrange'' and even the SoBadItsGood movie ''Film/{{Troll}}''. And loads more. The irony here is that Creator/JKRowling couldn't have ripped off all of them at once, and it often tends to imply that ''they'' were instead ripping off ''each other''. While a WizardingSchool was never a new trope, there's nothing older than ''Harry Potter'' to which it's ''exactly'' similar.
* Related to the above, ''Literature/HarryPotter'' was also aided by ''Literature/TheInheritanceCycle'' in showing publishers that young adults actually do have the attention span to read long books, especially series with multiple installments that are themselves doorstoppers. While it and Harry Potter certainly weren't the first kids series (''Literature/TheChroniclesOfNarnia'' has been a favourite amongst children for years.) it most definitely was ''not'' the last.
* The success of Creator/WilliamGibson [[FromClonesToGenre spawned the entire]] {{Cyberpunk}} genre, though credit to the first {{Cyberpunk}} work is generally given to Creator/JohnBrunner's ''Literature/TheShockwaveRider''. Cyberpunk knock-offs usually incorporate Gibson's use of cyberspace, cybernetics, and crime noir. Cyberpunk in turn splintered into PunkPunk.
* When Creator/StephenKing published ''TheGreenMile'' in serial format, lesser-known horror writer John Saul attempted the same thing with ''The Blackstone Chronicles''. It didn't work as well.
* Thanks to Creator/AnneRice making [[OurVampiresAreDifferent vampires]] fashionable and Literature/AnitaBlake making supernatural female detectives popular, there's recently been a massive glut of supernatural mysteries with [[VampireDetectiveSeries supernatural PI characters]], UrbanFantasy stories, and ParanormalRomance novels that shows no signs of stopping.
* Various effects of ''Literature/{{Twilight}}'':
** The series caused a boom in the YA vampire genre. Notable examples include P.C. Cast's ''TheHouseOfNight'' series, Richelle Mead's ''Literature/VampireAcademy'' series, and Melissa de la Cruz's ''Blue Bloods'' series, each having [[OurVampiresAreDifferent a wildly different take on the vampire mythos.]] Not only that, but it caused a surge of YA ParanormalRomance in general, or at least "angsty teenage girl falls in love with the hot new boy at her school who turns out to have a supernatural secret" plots: ''Literature/HushHush'' (supernatural secret: angels), ''Fallen'' series (angels again), ''Literature/TheImmortalsSeries'' ([[ExactlyWhatItSaysOnTheTin immortals]]), ''Literature/TheCasterChronicles'' ([[GenderFlip genderflipped]] and with witches) ...
** Publisher's of books written ''before'' the ''Twilight'' series have attempted to make them ''look'' like spin-offs and tie-ins, including ''Literature/WutheringHeights'', ''Literature/PrideAndPrejudice'' and ''Theatre/RomeoAndJuliet''.
** That's not to say anything from ''The Vampire Diaries'', a 1991 book series who saw a rebirth with the YA vampire fever, being brought back to readers' knowledge, and spawning a TV series.
** Popular romance novel ''{{Literature/Fifty Shades Of Grey}}'' was originally a ''Twilight'' fanfiction. It was so successful that it spawned its own followers: two novels entitled ''Gabriel's Inferno'' and ''Gabriel's Rapture'' have gotten a seven-figure deal. And like ''Fifty Shades'', these novels started off as ''{{Literature/Twilight}}'' fanfics. Read about it [[http://www.mediabistro.com/galleycat/sylvain-reynard-fan-fiction_b55297 here]].
* Speaking of ''Fifty Shades of Grey'', it spawned the ''Eighty Days'' trilogy; another trilogy of BDSM romance books called ''Eighty Days Yellow'', ''Eighty Days Blue'' and ''Eighty Days Red.'' As you may have noticed, even the title is designed to sound a bit like "Fifty Shades." It's no coincidence that it's got a number in the beginning and is followed by a color. And then there's the short story collection ''12 Shades of Surrender'', which is exactly what it sounds like.
* Every HighFantasy setting (by this wiki's definition) has its roots in J.R.R. Tolkien's ''Literature/TheLordOfTheRings''. Sometimes they're knock-offs of works that are ''themselves'' knock-offs of ''Lord of the Rings''.
* ''Literature/TheNeverendingStory'' owes a good lot of its plotline to the Ibsen play ''Theatre/PeerGynt'', especially in the second part of the novel.
* Jasper Fforde pokes fun at this phenomenon in ''The Well of Lost Plots: A Literature/ThursdayNext Novel.'' While Thursday is exploring the Well of Lost Plots, where books and characters are created from scratch, a MrExposition explains to her that, when one character is written with a particularly forceful or distinctive personality, characters-to-be are affected by that and take on those traits. A side-effect of Daphne Du Maurier's ''Rebecca,'' for example, is that hundreds of impressionable characters imitated the creepy and possibly [[PsychoLesbian psychotic lesbian]] housekeeper of the story, which results in, for Jurisfiction, an army of Mrs. Danvers clones. At the end, he offers Thursday, "Can I interest you in a [[TheObiWan wise]] {{old|Master}} [[EccentricMentor mentor]] figure?"
* While Creator/TomClancy was not the first guy to do the techno-thriller, he spawned a lot of imitators.
* Somewhat to Sir Creator/ArthurConanDoyle's chagrin, ''Literature/SherlockHolmes'' arguably opened the floodgates for modern mystery and detective fiction, as detectives like Hercule Poirot, Literature/NeroWolfe, and Inspector Morse all followed in his footsteps in one way or another. Holmes even provided a key inspiration for Franchise/{{Batman}}'s status as Franchise/TheDCU's greatest detective.
* The ''Mageworlds'' series are sci-fi novels which feature [[TheForce a mystical power that binds everything in the universe]], and can give those who wield it telepathy, telekinesis, psychic predictions, etc. The power has good and evil users (Adepts and Mages, respectively) who [[ElegantWeaponForAMoreCivilizedAge use melee weapons in a galaxy full of blasters]]--and frequently, the [[GoodColorsEvilColors Adepts' energy manifests as blue or green, with the Mages' being red.]] The main characters include a [[RoyalsWhoActuallyDoSomething princess/queen]], a [[LoveableRogue free-trader/smuggler/space pirate]], and [[TheObiWan a very old, very wise mentor who is also secretly a user of the mystical power]]. It just might remind people of a very popular [[Franchise/StarWars film series]]. It does manage to avoid sucking, though, and there are enough plot differences that it doesn't read like a SerialNumbersFiledOff kind of thing.
* The UK and Ireland have recently seen a surge of popularity for "misery lit" books based on stories (some true, some not) of childhood abuse/ParentalAbandonment etc. They all look exactly the same (a mostly white cover with a photo of a big-eyed child and a heartstring-tugging title in twirly, bright lettering), occupy entire shelves in shops, and seem to be competing with each other to see which can be the most depressing. Possibly launched in America by ''A child called it'' by Dave Peltzer, which then brought the craze to Britain and Ireland when it was released there. Many bookshops now consider these a legitimate genre and have a section devoted to them, often called "Tragic Lives".
* PhilippaGregory's Tudor-era historical romance novels (starting with ''Literature/TheOtherBoleynGirl'') jumpstarted a new wave of imitators set in or around the reign of Henry VIII (a trend exacerbated by the TV series ''TheTudors'').
* ''The Zombie Survival Guide'' and its companion ''Literature/WorldWarZ'' have provided a lot of the momentum for the surge in zombie fiction. Works like ''Literature/PrideAndPrejudiceAndZombies'' have their origin in these.
* ''Literature/PrideAndPrejudiceAndZombies'' and ''Literature/AbrahamLincolnVampireHunter'' spawned a number of works mashing up public domain stories and characters with pulp conventions -- see LiteraryMashUps for a list.
** The knock-offs even spread to Brazil, with ''[[http://en.wikipedia.org/wiki/Mem%C3%B3rias_P%C3%B3stumas_de_Br%C3%A1s_Cubas Undead Memories of Brás Cubas]]'', ''[[http://en.wikipedia.org/wiki/O_alienista The Alienist]] Mutant Hunter'', ''[[http://en.wikipedia.org/wiki/Dom_Casmurro Dom Casmurro]] and the Flying Saucers'' (all three before based on MachadoDeAssis), ''[[http://en.wikipedia.org/wiki/A_Escrava_Isaura_%28novel%29 Escrava Isaura]] and the Vampire'' and ''[[http://en.wikipedia.org/wiki/Senhora_%28novel%29 Senhora]], The Witch''.
* After the success of ''GossipGirl'' and the subsequent TV series, many more novels about rich white teenage girls (with a TokenMinority or two) in private schools have been made. Some of the imitators include ''Literature/TheClique'', the ''Literature/{{Private}}'' series, and ''Literature/PrettyLittleLiars''.
* The Kimani Tru series, books about African-American urban teens, now has many imitators.
* Almost everybody knows of Milton's ''Paradise Lost''. What many people don't know is that Dutch writer Joost van den Vondel published ''De Lucifer'', a play with the same basic plot, roughly four years before Milton even started writing his poem. While it's doubtful that Milton knew enough Dutch to fully understand the play, it's no stretch to say that he was inspired by the premise.
* RLStine's success with ''Literature/{{Goosebumps}}'' led to dozens of similarly named series being published including ''Bone Chillers'', ''Deadtime Stories'', ''Shivers'', ''Spinetinglers'', ''Spooksville'', and ''Strange Matter''.
** And ''Literature/GalaxyOfFear'' is pretty clearly taking inspiration from Goosebumps, though the books follow one set of protagonists for the whole series and have a clear arc. Subject matter is largely the same, the kids are around the same age, there are constant {{Cliffhanger}}s and PseudoCrisis chapter endings...
* At one point in the mid-nineties you couldn't turn around in a British bookshop without tripping over a "[[Literature/{{Discworld}} comic fantasy]]" with a Josh Kirby style cover. All they proved was there is only one [[Creator/TerryPratchett Sir Terry Pratchett]].
* After the success of Don Pendleton's ''Literature/TheExecutioner'' books, a flood of copycat vigilante justice series jumped onto the bandwagon, with names like "The Destroyer" (which lasted the longest), "The Butcher", "The Penetrator", "The Liquidator", etc. Oh yeah, and a little comic book by Marvel called ''Comicbook/ThePunisher''.
* The success of ''Literature/TheHungerGames'' has created a market for many new YoungAdult {{Dystopia}} novels with female leads and an emphasis on romance. To name a few: ''Literature/LegendTrilogy'' by Marie Lu, ''Shatter Me'' by Tahereh Mafi, ''Literature/{{Matched}}'' by Ally Condie, ''Wither'' by Lauren [=DeStefano=], ''[[Literature/RazorlandTrilogy Enclave]]'' by Ann Aguirre, ''Under the Never Sky'' by Veronica Rossi, and ''Literature/{{Divergent}}'' by Veronica Roth. Many of these also hold to ''Literature/TheHungerGames'''s structure: 16-year old ActionGirl protagonist, present-tense first-person narration, love interest (though a surprising lack of love triangles), and angst.
** Many of these novels have covers featuring circular emblems reminiscent of the Mockingjay pin. While writers have no control over what the covers look like, these might be publishers' attempt to get the books popular so it still counts as this trope.
** The success of ''Literature/TheHungerGames'' has also benefited {{Dystopia}} YA books that were already written before/being written during ''Literature/TheHungerGames'', due to being republished in light of the genre's popularity. These include ''Literature/HouseOfTheScorpion'', the already-popular ''Literature/ChaosWalking'' and ''Literature/{{Unwind}}''.
** And then, of course, there's ''Literature/TheHungerGames'' itself, which a few bloggers have ripped on for being an apparent ''Literature/BattleRoyale'' ripoff. However, ''Battle Royale'' doesn't have [[Literature/LordOfTheFlies too]] [[Literature/TheRunningMan original]] [[Literature/TheLongWalk a premise]] either, and there are an equal amount of differences as there are similarities. Either way, the two series have got quite a FandomRivalry going on, with a quiet minority liking both. Oddly enough, the debate is almost never "which is better", but rather "is it a ripoff". ''Battle Royale'' fans tend to disrespect the series even more for having a love triangle and tend to regard ''Literature/TheHungerGames'' fans as being no different from the ''Literature/{{Twilight}}'' crowd.
* Though not as successful as ''Literature/TheHungerGames'', ''{{Graceling}}'', a well-acclaimed YA fantasy series, has inspired YoungAdult authors to hit the fantasy route rather than {{Dystopia}}. Some of the most popular ones is Leigh Bardugo's ''Shadow and Bone'', part of the Grisha Trilogy, the ''Seraphina'' series from Rachel Hartman, and possibly ''Falling Kingdoms'' by Morgan Rhodes.
* Cory Doctorow's ''Literature/LittleBrother'' has one: ''Brain Jack'' by Brian Falkner, and a few other stories about DeadpanSnarker teen hackers resisting a government technological regime.
* While the whole fictional-story-written-as-a-journal/diary is nothing new, Jeff Kinney's ''Literature/DiaryOfAWimpyKid'' series has at least one major imitator: Rachel Renee Russell's ''Literature/DorkDiaries.''
** Other humorous graphic novel/children's novel hybrid series that have followed in Greg Heffley's wake include ''Middle School'' (JamesPatterson), ''Tales of a Sixth Grade [[Franchise/TheMuppets Muppet]]'', ''Timmy Failure'' ([[PearlsBeforeSwine Stephan Pastis]]), and '''two''' ''Franchise/StarWars''-inspired series in ''Origami Yoda'' and ''Jedi Academy''.
* The success of ''Literature/BlackBeauty'' led to the (also successful) novel ''Beautiful Joe'' in 1893 (the latter even references the former); both novels helped raise awareness of animal cruelty.
* George Orwell's revolutionizing book, ''NineteenEightyFour''. One of the most popular books in history to the point of being repeatedly treated as [[MagnumOpus the "Citizen Kane" of Literature]]. It was inevitable that from then on to even today, there are writers making stories about {{Dystopia}}n PoliceState [[CrapsackWorld Crapsack Worlds]], with the only twist being that their protagonists win in the end. It gets even more stereotypical if it floats towards IssueDrift like Orwell was doing, [[AuthorTract except it's taken way too seriously]]. Books like ''The Hunger Games'' owe all their premises to this trope.
* The non-fiction book ''The World Without Us'' (2007), whose premise is showing what would happen to the world if all humans suddenly vanished one day, was followed by two 2008 documentaries that were basically ''The World Without Us'' with the serial numbers filled off: ''LifeAfterPeople'' and ''{{Aftermath}}: Population Zero'' (each would later give birth to full TV series, with only ''Life'' staying true to the original premise). After that there was a noticeable shift in post-apocalyptic fiction from sterile, gray or [[RealIsBrown brown]] settings often brought by nuclear warfare to "green" overgrown cities where humans had been [[DepopulationBomb decimated by some disease]] and/or anarchy, but everything else was doing alright: ''IAmLegend'' (2007), ''{{Revolution}}'' (2012), ''TokyoJungle'' (2012), ''TheLastOfUs'' (2013) and ''[[RiseOfThePlanetOfTheApes Dawn of the Planet of the Apes]]'' (2014).

* DimeNovel hero Literature/NickCarter was pretty clearly a source for DocSavage. Reading through the Nick Carter dime novels is like going through a Doc Savage checklist: trained since childhood by father to be a mental and physical superman, travels the world righting wrongs and battling evil, a master of disguise, has a RoguesGallery full of sinister villains, leads a team colorful assistants, etc. Its DocSavage, only in the 19th century.
* The success of ''Literature/ASongOfIceAndFire'' led to a wave of dark, cynical fantasy series being published and becoming popular, such as ''Literature/TheMalazanBookOfTheFallen'', ''Literature/TheFirstLaw'', ''Literature/SecondApocalypse'' and ''Literature/GentlemanBastard''. Though some of these are quite different in terms of subject matter, the success of Martin's books definitely helped get them a foothold in the market (''Literature/TheMalazanBookOfTheFallen'' started publishing in 1999, not long after Martin's series, but was not available in the US until 2003, when ''Literature/ASongOfIceAndFire'' had become successful).

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