History AdaptationExpansion / AnimatedFilms

* ''WesternAnimation/TheBadGuys2022'' is based off [[Literature/TheBadGuys the book series of the same name]], which begins with Mr. Wolf having decided to reform from his villainous ways and recruits the others to join his cause. His time as a criminal are only mentioned in passing or, in the later books, shown via flashback. The film begins with the gang at the height of their criminal careers and and shows the moment that causes Mr. Wolf to begin rethinking his life of crime.

* ''WesternAnimation/{{Shrek}}'' was originally [[Literature/{{Shrek}} a children's book]] that contained almost nothing that appears in the film. Somehow, we ended up with four movies (the first two critically-acclaimed) and a [[Theatre/ShrekTheMusical Broadway musical]]. And then Puss in Boots became an AscendedExtra and got [[WesternAnimation/PussInBoots his own hilarious spin-off movie]].

* ''WesternAnimation/BatmanTheKillingJoke'', based on [[ComicBook/TheKillingJoke the comic of the same name]], includes a prologue to help expand the runtime of the movie and (ostensibly) set-up the story, including a focus on Barbara Gordon's time as Batgirl. This actually wound up being pretty unpopular, as the opening forty minutes have little connection to the main story and feature some... [[CoitusEnsues questionable choices in characterization]].

* ''WesternAnimation/MortalKombatLegendsSnowBlind'' uses [[spoiler:Kano's arcade ending from ''VideoGame/MortalKombat11'' as the basis for its story, albeit with some tweaks, something Kronika as dead rather than merely having given up her powers to Kano and Kano ruling an AfterTheEnd world that he himself made.]]

* ''WesternAnimation/TheBadGuys'' is based off [[Literature/TheBadGuys the book series of the same name]], which begins with Mr. Wolf having decided to reform from his villainous ways and recruits the others to join his cause. His time as a criminal are only mentioned in passing or, in the later books, shown via flashback. The film begins with the gang at the height of their criminal careers and and shows the moment that causes Mr. Wolf to begin rethinking his life of crime.

** According to WordOfGod, director Henry Selick added Wybie in as he thought [[NecessaryWeasel it would feel odd with just Coraline talking to herself through half of the film,]] which in fact adds a certain poignancy to the question, "Why were you born?"

* ''WesternAnimation/MortalKombatLegendsSnowBlind'' uses [[spoiler:Kano's arcade ending from ''VideoGame/MortalKombat11'' as the basis for its story, albeit with some tweaks, something Kronika as dead rather than merely having given up her powers to Kano and Kano an AfterTheEnd world that he himself made.]]

* Similar to the live-action ''Film/TheTenCommandments'', ''WesternAnimation/ThePrinceOfEgypt'' expanded upon the details in the Literature/BookOfExodus to show the relationship between Moses and the Pharaoh. Both films depict it as SiblingRivalry. Nothing in scripture itself says Moses and the Pharaoh were raised as brothers.

* ''WesternAnimation/{{Epic}}'' is a loose expansion of Creator/WilliamJoyce's ''The Leaf Men and the Brave Good Bugs''.

* ''WesternAnimation/OliveTheOtherReindeer'' was turned by [[WesternAnimation/TheSimpsons Matt Groening]] and Creator/DrewBarrymore from a tiny 20-page children's book into a 90-minute cartoon movie. That ''rocks''. They even preserved the drawing style of the book.

* Almost all of the ''Franchise/{{Barbie}}'' movies are this, seeing most of them are based off of short tales, such as ''WesternAnimation/BarbieInTheNutcracker,'' ''WesternAnimation/BarbieOfSwanLake'', ''WesternAnimation/BarbieInTheTwelveDancingPrincesses,'' etc. In ''WesternAnimation/BarbieAsRapunzel'', the original story is a DreamSequence.

* ''WesternAnimation/ThePolarExpress'' movie, which some critics and audience members complained felt like a 20-minute short with an hour of filler added onto it. That certainly doesn't stop it from grabbing at your heartstrings, though, and the animation is quite breathtaking, too.

* ''WesternAnimation/{{Shrek}}'' was originally a children's book that contained almost nothing that appears in the film. Somehow, we ended up with four movies (the first two critically-acclaimed) and a [[Theatre/ShrekTheMusical Broadway musical]]. And then Puss in Boots became an AscendedExtra and got his own hilarious spinoff movie.

* The film adaptation of the Hudson Talbott children's book ''WesternAnimation/WereBackADinosaursStory'', transformed a simple FishOutOfWater tale about large prehistoric creatures dropped into the strange new setting of modern-day New York into a full-blown Disneyfied epic. The dinosaurs got some new friends in the form of runaway disillusioned children, an [[CircusOfFear evil circus owner]] and his Cereal That Makes You Evil (seriously). Walter Cronkite also voices a scientist who gives them a mission of "making children's dreams come true". This is meant to save the world. Somehow.\\\
It is well worth it to hunt around for Talbott's sequel book, ''Going Hollywood''. The story has Rex and pals go to Hollywood to have their life story made into a movie. Much hilarity ensues. [[WriterRevolt One can't help but wonder...]]

* ''WesternAnimation/MrPeabodyAndSherman'' is based on the ''Peabody’s Improbable History'' segments barely over five minutes lone from ''WesternAnimation/RockyAndBullwinkle''.

* ''WesternAnimation/{{Coraline}}'', adapted from the original [[WhatDoYouMeanItsNotForKids children's book]], makes several significant changes. Most notable are the addition of Wybie, a neighbor boy who turns out to be the grandson of the woman who owns the house and a friend of the Black Cat. The bit with the rag doll is also a movie-only inclusion. The movie also expands on the identity of [[spoiler:one of the little girls in the Room Behind The Mirror]] and her connection to movie-only Wybie, it also completely erases the implication that the Other Mother is one of TheFairFolk whose realm is [[ParanoiaFuel not the only one out there]]. The biggest discrepancy here is that in the book, that little girl isn't human, she's a pixie, and the Beldam's first victim.

** The ''[[VideoGame/{{Coraline}} Coraline video game]]'' added an explorable barn area near the Pink Palace to order to expand on gameplay, since traipsing around the Pink Palace can only do so much in terms of variety, even with the freely-explorable Other World the game offers.

* ''WesternAnimation/{{Coraline}}'', adapted from the original [[WhatDoYouMeanItsNotForKids children's book]], makes several significant changes. Most notable are the addition of Wybie, a neighbor boy who turns out to be the grandson of the woman who owns the house and a friend of the Black Cat. The bit with the rag doll is also a movie-only inclusion. The movie also expands on the identity of [[spoiler:one of the little girls in the Room Behind The Mirror]] and her connection to movie-only Wybie, it also completely erases the implication that the Other Mother is one of TheFairFolk whose realm is [[ParanoiaFuel not the only one out there]]. The biggest discrepancy here is that in the book, that little girl isn't human, she's a pixie, and the Beldam's first victim.\\\

** The ''[[VideoGame/{{Coraline}} Coraline video game]]'' added an explorable barn area near the Pink Palace to order expand on gameplay, since traipsing around the Pink Palace can only do so much in terms of variety, even with the freely-explorable Other World the game offers.

According to WordOfGod, director Henry Selick added Wybie in as he thought [[NecessaryWeasel it would feel odd with just Coraline talking to herself through half of the film,]] which in fact adds a certain poignancy to the question, "Why were you born?"

* All of Disney's fairy tale-based films fall under this trope by default as the original fairy tales are typically rather short and simplistic, requiring a good amount of character and plot expansion to stretch them out to an hour and half. ''Disney/SnowWhiteAndTheSevenDwarfs'' padded out its length with several dwarf-centric scenes, ''Disney/SleepingBeauty'' greatly expanded the roles of the fairies and gave the prince something to do other than be lucky enough to be standing in front of the thorns just as the century-long spell expired, etc.
* Disney's ''Disney/{{Dumbo}}'' was based on a very short (thirty-six pages) children's book. Even with a decent amount of padding, the final film clocks in at only sixty-four minutes. They could've done without "[[DisneyAcidSequence Pink Elephants on Parade]]", though.

* ''Disney/MeetTheRobinsons'' added a whole time travel plot around the children's story ''A Day With Wilbur Robinson''. The second act, where Lewis meets the Robinson family and looks for Grandpa's teeth, is the only part of the movie that's actually in the book.

* ''Disney/{{Tangled}}'' has Rapunzel spend more time outside her tower than inside it for the film's running time, etc.