Adaptation-Induced Plot Hole

"I say, that plot line made a lot more sense in the original manga."
Bakura referring to the duel between his evil side and Yugi, Yu-Gi-Oh! The Abridged Series

So you're watching the movie version of your favorite book, and wait — wasn't Alice's sword broken two scenes ago? What happened to the scene where she went to go get it reforged? And why is Bob seemingly flirting with Charlotte? Doesn't he indicate in the third book that he never liked her and suspected her of being a traitor?

Almost no adaptation is perfectly accurate. Details often get left out of adaptations, and sometimes this works, sometimes this doesn't (particularly to those unfamiliar with the original work). Other times, details are added that seem perfectly fine at the time, but end up directly contradicting canonical plot points — with a continuing work, this may even be a plot point the original writers hadn't actually written yet. Sadly, authors are not psychic.

If added material results in a plot hole, it may require an additional scene to Hand Wave it away. If removed material caused the problem, there may be a brief Info Dump to fill everyone in on what they missed. Contrast with its inverse, the Plot Tumor.

If this is caused by a work being translated into another language, it's a Dub Induced Plothole.

If there is simply a lack of explanation as to why something happened, instead of a full-on Plot Hole, it's Adaptation Explanation Extrication.

See The Artifact if something similar happens during the production of an original work.


Examples:

    open/close all folders 

    Anime & Manga 
  • One Piece :
    • In a mini-arc about Coby and Helmeppo, the two are said to have sailed over Reverse Mountain to Marine Headquarters with Garp. Later on, it is revealed that Marine ships can cross the Calm Belt with special Seastone equipment, and the newspaper photo is hand waved away as a deception for the press.
    • The Warship Island Filler Arc makes two: first when Zoro easily cuts through steel chains, despite it being a plot-point in the canon Alabasta arc that he couldn't cut steel. Second is that all the Strawhats meet Ryuji, a dragon, which makes Zoro's comment to Ryuma in the Thriller Bark arc that he doesn't believe in dragons seem completely stupid.
      • Later in the manga, the crew meets a dragon for the first time, with all of them expressing surprise as they have never seen one before. Whoops.
    • At the end of the Warship Island Arc, Nami outright murders the Dragon-in-Chief by knocking him into the sea. Cut to the Dressrosa Arc where Nami considers the idea of tossing a fruit user into the ocean to be too cruel.
    • Another one was when a filler episode had Chopper use two Rumble Balls a short time apart without consequence, when it was later shown taking more than one within six hours has dangerous consequences; taking two should have made him lose control of his transformation. The filler arc was made before that particular weakness was revealed in the manga.
    • In the Impel Down arc, the scene in the control room was extended and added Bon Clay destroying the controls for the Gates of Justice. It wouldn't be big a deal if Blackbeard were not still deep in the prison.
    • During the Reunion Arc (the first arc to take place after the two-year Time Skip), the anime had Chopper chew a Rumble Ball before transforming into the forms that normally require it, just short of Monster Point. This contradicts a later revelation that, thanks to his two years of training, he now only needs a Rumble Ball for his Monster Point form, and in fact, the original manga scene didn't have him take any Rumble Balls at all.
    • In Dressrosa, when Doflamingo is about to offer Law a Sadistic Choice at gunpoint, the anime has him address Law by his full name, "Trafalgar D. Water Law". This is despite the fact that Law never told Mingo his full name, only saying that he's a "D" like Luffy...something that Doffy did not even know at all until Law mentioned it. Doflamingo should have had no way of knowing about the "Water" in his name.
  • Naruto:
    • Naruto claims to have only read 10 pages of Jiraiya's latest novel, Make Out Tactics, in the anime as an extra joke that he was lying when he distracted Kakashi by pretending to spoil the ending. However, later on when he's trying to decode a message Jiraiya left behind while dying, it's revealed that Jiraiya asked him to proofread his books, and he at least obliged to the degree he knows Jiraiya's handwriting well enough to notice that he disguised a "ta" katakana (タ) as a 9. Perhaps he lied about lying he'd read the book, just to annoy Kakashi.
    • A filler episode expanded Suigetsu and Sasuke's trip to get Zabuza's sword from the Land of Wave, and it's mentioned that Inari and Tazuna would be working on a job in the Cloud Village for the next year. However, in the manga they actually ended up making guest reappearances in a job in the Leaf Village (helping rebuild after the Pain invasion) what was at most a couple months later.
    • A smaller one is how the anime gives the Fireball Jutsu to various characters that aren't members of the Uchiha clan or who are officially unable to perform Fire techniques.
    • During Itachi's fight against Naruto and Kakashi in Shippuden, it is stated that Itachi's Sharingan is not affected by the Hidden Mist technique. This contradicts what happened in the Land of Waves arc, where Kakashi's Sharingan was rendered useless against Zabuza's technique.
    • Omake should probably not be considered canon in general, but an early Shippuden omake has a really noticeable one where Deidara casually asks Kisame what Itachi is like as if he's never met him, even though Deidara was (forcibly) recruited into Akatsuki by Itachi in the first place and Deidara had spent the last several years trying to find a way to kill Itachi.
    • One Filler episode had Hinata learn a unique, powerful technique featuring myriad pinpoint-precision chakra laser beams. Later in the manga, a major villain is able to curb stomp her using his powerful gravity blast attack—she spends the fight repeatedly charging at him while trying to land a physical hit, which is hopeless. The chakra lasers would have obviously been a much better bet.
    • In the anime Obito is able to suck Fu into his Pocket Dimension without touching him, while in the manga it was not clear if he touched him or not and it was later explicitly stated to require physical contact, which was exactly why Minato was able to beat him.
  • Death Note:
    • The anime adaptation omitted several scenes from the manga, which while usually not problematic, have led to plotholes. In the manga, it's explained that SPK member Ill Ratt is actually a spy for Mello, which is how the mafia learned the SPK's names and were able to kill them. This is not explained in the anime, but in the Relight 2 special, the mafia are cut, and Light blackmails the president to send their names to Kiyomi Takada. In this version, Light's meetings with her and Teru Mikami are moved to earlier than occurred in the anime, and they kill the SPK.
    • However, while fixing one plothole, said special creates another: as the mafia are cut, Soichiro making the trade for Shinigami Eyes and subsequent death is omitted in the process, leaving plotholes regarding Soichiro's absence as well as how Light was able to acquire Mello's true name.
    • Also in Relight, they have one scene where Light says to Ryuk that talking with him would be impossible due to his room being bugged by L, but two scenes later they are shown freely talking without any mention of said cameras being removed.
  • Bleach:
    • In both anime and canon, when Ichigo first meets Renji, Renji expresses surprise over the size of Ichigo's zanpakutou. Ichigo admits he noticed it was large compared to Rukia's but, not having met any other Shinigami until now, he had nothing to compare it to. The anime creates the plot hole because it had inserted Ship Tease scenes in Episodes 8-9 where Ichigo fights another Shinigami over Rukia and therefore gets to see another Shinigami's weapon up close. These scenes do not exist in the canon.
    • When the anime covers Chad's backstory, it bizarrely changes the canon story. In the manga, Chad's grandfather lectured him against being a bully so Chad obeyed his grandfather and vowed to never fight for himself. Ichigo realised Chad could fight for others so the two vowed to fight to protect the other; Chad therefore only ever fights to protect others. In the anime, Chad ignores his grandfather until his grandfather is beaten almost to death by Chad's victims. Horrified, Chad vows never to fight again. Since the anime has Chad fighting to protect others, just as the manga set him up to do, Chad's anime behaviour completely contradicts the anime version of his vow.
  • In YuYu Hakusho, the group uses Yanagisawa's Copy power to copy Kaito and use his video game skills to win a round against the Game Master. In the anime, the group uses Yusuke (who is otherwise not very good at video games) to win a fighting game, which makes their desperation to win when Kurama comes up seem strange; in the manga, only Yusuke and the non-gamer Hiei were left, but in the anime, they could have utilized Yanagisawa's power.
  • In the Fist of the North Star TV series, during an episode where Jagi terrorizes a village while pretending to be Kenshiro, one of the villagers remarks that Kenshiro was the one who defeated "Devil's Rebirth and the Fang Clan". However, not many people outside Jackal and his gang were even aware of Devil's existence. In the original manga, the villager simply said that Kenshiro defeated Jackal instead. This change was likely done due to the fact that Jackal was an independent villain in the manga, whereas in the TV series he was simply a lackey of Shin.
  • Code Geass: In the final volume of the manga, the removal of some characters and plotlines led to several Out Of Character Moments. For example, Kaguya, who is Zero's biggest fangirl and a lot more cunning, not to mention absent during the meeting, is essentially the engineer behind the Black Knights' coup d'état against him and the one who smooths things over after he escapes; in effect, she takes up the roles of Diethard (who isn't in the manga) and Ohgi (whose motivation to betray Zero came from Viletta's excised storyline).
  • InuYasha:
    • The anime tries to explain that shikon shards are needed for Kagome and Inuyasha to travel through the well. This was never the case in the manga, and Kagome spends quite a while without any at all but still travels through the well, so it stops being a requirement in the anime without explanation.
    • Also, many plot points center around Kagome and Kikyo looking alike (Kagome being Kikyo's reincarnation). In the anime, their faces look different, so it doesn't make sense that people would confuse them.
  • Dragon Ball:
    • In the Dragon Ball anime, Goku meets Dr. Flappe, a professor who lives not far from Jingle Village and was pressured by the Red Ribbon Army into creating Android 8. Several years later in Dragon Ball Z, the creator of the Androids, including Eighter, is revealed to be Dr. Gero. Also in Dragon Ball Z, the ship Goku uses to get to Namek is a modified version of the ship he was sent to Earth in, which Piccolo destroyed in Filler. However, the latter issue is no longer present in Dragon Ball Kai.
    • Also in the Dragon Ball Z anime, the line from the Dragon Ball manga is cut where Zarbon tells Vegeta that Freeza can transform, leaving a bit of a headscratching moment when Vegeta references it later on. Kai does not fix this.
    • The anime shows Nappa throwing off his armor, which is apparently a massive and heavy object. The Freeza Saga later reveals that the armor is not only very elastic, but also extremely light, so Nappa's armor being heavy makes no sense.
    • Anime filler shows the character Dabura becoming good. Namek's Dragonballs are then used to wish back the people who are not evil. Dabura should have been revived, yet he doesn't appear later as this doesn't happen in the manga.
    • The Garlic Jr. Saga is basically one big adaptation induced plot hole. It, nor any of the other movies occur in the manga obviously. It directly follows the movie The Dead Zone, which is supposed to take place before the start of Dragon Ball Z. If Dead Zone was canon, then there's no reason Krillin and the others don't know about Gohan in the first episode of Dragon Ball Z and are surprised when he unleashes his power on Radditz.
    • In one filler episode of Dragon Ball, Master Roshi tells a story of the creation of the Dragon Balls, which not only contradicts the later canon (which is forgivable because he introduces it as a story he heard, not necessarily claiming it as the truth) but is also out of place because he didn't know what dragon balls were in the first place.
    • Similarly, an episode of Z has King Kai tell the story of how the Saiyans were wiped out, and attributes it to the "Kami-sama" of their galaxy summoning a meteor to strike Planet Vegeta in order to rid the galaxy of the Saiyans and their evil ways. As it turns out, this is far from the truth, as Freeza was the one who destroyed the planet, and for less than noble reasons.
    • One of the most egregious examples is the filler scenes after everybody on Namek has been transported to Earth. Vegeta starts acting like a dick, which is typical of him, but behaves in a way completely contradictory of his character motivations. He brags about Goku and Frieza's potential deaths making him the strongest by default, antagonizes the Namekians, and then claims in a flashback during his time working for Frieza that he knew he blew up his home planet all along, even though he was shocked when Dodoria told him this and said he would have revolted if he knew. And then he laughs at Gohan when the news breaks of Goku's "death" and pummels him in a fight before flying off. And then in the next episode he's standing under a tree as if nothing happened, Gohan has no scratches or bruises, and he suggests a method of wishing Goku back to life so he can find out how to become a Super Saiyan and defeat him.
    • Dragon Ball Kai fixes some plotholes (like the Vegeta-dickery from the previous point), but creates some new ones thanks to the fact that it retains some filler while excising others. For example, the Buu Saga retained a scene in Hell where the previous villains watch the final battle on a giant crystal ball. Two of the Oni present recognize Goku as "that fellow who fell off Snake Way a while back", referring to a Saiyan Saga filler episode that didn't make the cut.
      • Dragon Ball Z: Resurrection ‘F’ messes up this previous scene in another way by saying Freeza spent 15 years in Hell being put through a Sugar Bowl punishment (suspended from a tree while fairies sing happy songs), while in the filler he was free to move around. Of course, the entire depiction of Hell as a somewhat pleasant park originated in Filler in the first place...
    • When Vegeta is about to self-destruct himself to destroy Majin Buu, he asked Piccolo where he would be in the afterlife. Piccolo retorts that since Vegeta has been a ruthless Saiyan for most of his life, he would be sent to hell where not only he would lose his body but his soul would also be purified until he is reborn without any memories. While it makes sense in the manga as we never saw what hell looks like at the time, it doesn't explain why many villains such as Frieza, Cell and others in fillers, movie and GT keep their body and did not even lift a finger in an attempt to purify them.
  • Plot Holes seriously tarnish what is an otherwise excellent series in Flights of Fancy, the second season of the Ah! My Goddess TV series— Skuld is seen using her stamp power in one late episode, but there's no episode in which we see it developed, and Chihiro, and her shop, Whirl Wind, show up, but Chihiro is never formally introduced, and the fact that she wanted to start a shop is never even mentioned.
    • Flights of Fancy also inverts this Trope: Keiichi and Belldandy are an Official Couple by Episode 24 of Ah! My Goddess; at the end of the Lord of Terror arc, they share a Crowning Moment of Heartwarming when they confess their love for each other. In the 24th (and last) episode of Flights of Fancy, Keiichi spends the entire episode trying to confess his love for Belldandy, but Cannot Spit It Out— even though Belldandy flat-out says she's ready for him to say it!
  • Hellsing: In his fight with Alucard, Luke Valentine is shown to have a strong Healing Factor, surviving after getting shot in the head by Alucard's specialized gun. However he is unable to regenerate his legs. In the manga there was no headshot. He was instead shot in the stomach by the Casull, while his legs were shot off by Jackal. In the OVA, Jackal was the cause of all three wounds. This was rectified in the Blu-ray re-release, where Luke's initial injuries are now caused by the Casull.
  • In Ranma ½, Ranma (as a girl) competes with Tsubasa (whose disguise had yet to be revealed) in who can sell more food to the boys at school, but since all of them knew that Ranma wasn't a real girl they didn't buy any from her until she started wearing a disguise. However, in the anime Ranma's curse wasn't revealed by this point, so the boys bought them only from the disguised Ranma for no apparent reason.
  • Saint Seiya had one when they showed Scorpio Milo killing Shun's Master. Then the manga came out and it was Pisces Aphrodite. A number of Ass Pulls had to be done to fix the problem of Shun swearing revenge against someone who didn't apply the coup de grace against his teacher.
  • Dr. Slump had a story where Akane dressed up as Miss Yamabuki to play some pranks on Senbei. This took advantage of their faces looking the same. The second anime made their faces more different (And gave them different hair colors), yet they adapted this story even though it didn't make sense any more.
  • The TV anime adaptation of Berserk ends with Guts facing certain doom, but then skips to him still alive in The Stinger (looking as he did in the Action Prologue). As Skull Knight, the guy who saved him in the manga, was Adapted Out, this just seems blatantly nonsensical.
  • Elfen Lied:
    • The anime begins with a violent demonstration of Lucy's immunity to bullets, despite the fact that the guards are supposed to have special bullets designed to penetrate her vectors. In the manga, she grabs a Human Shield before any of the heavily armed guards can get a shot off.
    • The anime also gave Lucy only four vectors, as opposed to the seemingly unlimited number she had in the original, while allowing her to do things she did in the manga that would be impossible with only four vectors, such as simultaneously holding a few hundred bullets in mid-air.
  • Yu-Gi-Oh! had quite a few examples in the anime, particularly with the size of the dueling arenas in Duelist Kingdom.
    • Jonouchi discovering Mai's perfume-trick makes less sense in the anime. In the manga, they were sitting relatively close to each other, so it would make sense for Jonouchi to pick up on the scents. In the anime, there's quite a distance between them, not to mention that they're outside, so it should be impossible for Jonouchi to smell the perfume.
    • In the manga, Kaiba's dueling rings were exclusive to himself and his company, and Pegasus was only able to produce the smaller Battle Boxes, creating a need for him to want Kaiba's technology to make a lifelike, real-size copy of his wife. In the anime, Pegasus's dueling rings were nearly identical to Kaiba's, making one wonder why he needed Kaiba's technology if he already had an equivalent. The dub fixes this by having him need both the technology and the Millennium Items to bring his wife back to life, which he could only get through beating Yugi and acquiring KaibaCorp.
    • Some of the Millennium Items are given one-time-only powers that they never had in the manga, such as the Puzzle being used to swap the Bakuras' souls, though this is phased out post-Duelist Kingdom.
  • The anime adaptation of the video game Tales of the Abyss suffers from its Compressed Adaptation status. Sometimes it's only Adaptation Explanation Extrications, but other times are full blown plot holes. The most obvious example is Ion's death, which it's explained in the game, but in the anime comes practically out of nowhere and without any tangible reason.
  • Fullmetal Alchemist:
    • Brotherhood has a pretty noticeable plothole. Roughly about 2/5ths through the manga, all hell breaks loose and sees Alphonse, Mustang's group, Barry the Chopper, and Ling and Lan Fan get caught up in a battle with the Homunculi. Ling and Lan Fan fight Gluttony and Ling manages to cut Gluttony in half. Gluttony immediately heals up from this, which causes Ling and Lan Fan to learn about the Homunculi's regenerative abilities. When Ed returns from Xerxes later on and reveals his plan to capture a Homunculus, Ling and Lan Fan want to get in on the action because of their knowledge of the Homunculi's regeneration since it relates to their own quest to find immortality. In Brotherhood, the two's fight with Gluttony is completely cut, but they still want to join on Ed and Al's plan to capture a Homunculus for the same reasons, making one wonder how they know about the Homunculi and their power to regenerate.
    • In the first anime, Greed's plan to bind his soul to an inanimate object was a failure before it even began, since homunculi in the first series had no souls to begin with. He was aware he had no soul, too.
  • Periodically in Sailor Moon:
    • At the end of the first act of the manga, Innocent Bystander Naru is insistent that morning that she and her mother were attacked by "robbers" the previous night (which fits somewhat with the fact that her mother was found taped up and locked in the basement of her jewelry store), who were stopped by Magical Girl Warrior Sailor Moon (she has mercifully forgotten they were a shapeshifting monster). In first episode of The '90s anime, rather than operating under a Weirdness Censor, Naru believes the full incident was All Just a Dream, which raises questions as to whether she remembers that the "dream" monster told her that her mother was Bound and Gagged in the basement.
    • In the Sailor Moon S season, the then-currently condescending Outer Senshi have an oddly polite conversation with Tuxedo Mask (despite him being one of the weakest senshi) and refer to him respectfully as Endymion, despite no other indications that they know much about the existing cast (barring Pluto). This was lifted almost directly from the manga, where the Outer Senshi are implied to already know who most of the senshi are/were but are avoiding working with them out of a sense of duty and penance rather than dislike and skepticism.
    • The anime never explains how Mamoru is able to keep Chibi-Usa alive at the end of Sailor Moon S when her heart crystal is stolen. This is a plot point that is lifted directly from the manga, but by this point the story had already established that he has the power to pass on energy to another person and even heal wounds several times. The anime never establishes him as possessing such a power, but it acts as though he's been able to do this all along.
    • The anime short film Ami's First Love (accompanying the Super S movie) is a straight up adaptation of one of the Exam Battle short stories in the manga, which is about Ami getting a love letter from a secret admirer and freaking out so much she breaks out into hives. The problem? In the anime's timeline, Ami has already had a brief relationship with a Canon Foreigner fellow student, Urawa Ryou (thus this isn't even her first love) and she was shown handling his shy affection for her with grace and maturity. The short film also has the problem of showing Ami using an attack that she only used in the manga without explanation of where she got it. The films already create so many continuity problems that they're generally considered non-canon anyway, but it's still jarring when a story from the manga is adapted straight into a timeline that proceeded so differently as to contradict it.
    • A minor issue is with Uranus being mistaken as a boy. In the original manga, she is intentionally disguising herself as a male student to investigate the Mugen academy. She even poses as a new Tuxedo Kamen in one scene. Sailor Moon only realizes that she is a girl by recognizing her as Sailor Uranus. In the anime, she is simply a tomboy. It never gets explained exactly why Minako and Usagi initially mistake her as a boy, or even why Minako realizes that she is a girl in the end.
      • The same episode where the girls mistake Uranus as a boy also has Neptune deny that they are a couple, even though it was just as obvious.
    • A minor plot hole happens in SuperS in regards to the Amazons Quartet. At the very end of the series, they make a comment about possibly meeting Chibimoon again, and it is also never explained why they're named after goddesses/celestial bodies (a Theme Naming pattern common for the Solar System Sailor Senshi) rather than minerals or metals (a Theme Naming pattern common for the antagonists) — the implication is that they used to live in the asteroid belt, which only raises questions as to their true origins. In the manga, the four of them were actually dormant Sailor Senshi meant to be Chibimoon's guardians, who were forcibly awakened before their time and brainwashed into working for Nehellenia; their names come from the four asteroids that grant them their powers. Because the anime deviated from the manga in handling these characters, and ended up having Chibimoon herself Put on a Bus following the first arc of Stars, this development never happened in this version, leaving the hints that there was more to the Quartet with no outcome.
    • In the Sailor StarS season, many characters remark that Chibi Chibi looks exactly like Usagi. Not just like her little sister, more like her daughter. Well, in the manga, this did make sense as Chibi Chibi is actually Sailor Cosmos, a future form of Sailor Moon herself, and thus they are essentially the same person. In the anime, however, her origin is completely independent of Sailor Moon entirely and it's never explained why they look the same.
    • In episode six of Sailor Moon Crystal Usagi freaks out that she can't transform in front of Tuxedo Mask and reveal she's Sailor Moon, a few minutes after telling him she feels powerless as a leader. She's then surprised to learn he already knows about her secret identity. In the manga, he tells her he knows before she starts worrying about her inadequacies as a Guardian, so her reaction makes perfect sense. (Out of context, her words could be interpreted in a more general sense since she doesn't specifically mention the Sailor Guardians but talking about having to protect everyone while there's clearly a fight going on not too far away doesn't leave much room for interpretation.)
      • Near the end of the same episode, Tuxedo Mask carries an unconscious Sailor Moon to his home so she can rest after overusing her powers. When she subsequently wakes up in Mamoru's room, she is detransformed, with no explanation why this happened. In the manga, she detransforms at will upon waking up, and in general it is shown that simply being unconscious doesn't make a Guardian spontaneously revert to the civilian form, so it's unclear why her transformation was undone in this case.
    • Another episode of Crystal recreated the scene from the manga which reveals that Mamoru survived being stabbed by Sailor Moon because the stones the Shitennou transformed into blocked the blade, preventing him from receiving a fatal wound. In the manga, the possessed Mamoru was explicitly shown carrying the Kunzite stone after the Shitennou's human bodies decayed. In Crystal, however, the Shitennou didn't die until shortly before Mamoru was stabbed, which happened in a different place, so there's no explanation why he had their stones at that moment.
    • Another problem that occurs with the alterations to the Shitennou's plotline is occurs when a brainwashed Mamoru brainwashes Motoki to hold off the Guardians. Any viewer who hasn't read the manga will likely be scratching their heads as to why he doesn't just use the Shitennou, who have been proven to be more than a match for the girls before.
  • The first episodes of Detective Conan anime removed several references to Dark Organization and its members that existed in the manga, causing two examples of this trope:
    • In Shinkansen Bomb case (animated as episode 4), originally it was the Those Two Bad Guys who gave Shinichi that fateful Fountain of Youth that planted a bomb on the train, and during the case Conan (i.e. the alias Shinichi took after being shrunk) overheard their code names: Gin and Vodka. In the anime the criminals were no longer members members of Dark Organization but some random criminals, so this left a plot hole in the anime that was never adequately resolved— when these names were needed in the third season, Conan just mentioned that without any explanation on how he knew that in the first place.
    • The Billion-yen Robbery Case involves the death of Akemi Miyano, a Dark Organization mook, in the hands of the same Gin and Vodka. In the anime (Episode 12), the Dark Organization aspects of this case were completely removed— the said mook did not die, and she wasn't injured by Gin and Vodka either. This caused a case of Schrödinger's Cast as the said mook's death under the hands of the Dark Organization is essential to the plot, and she became the focal point of many, many backstories. An anime original episode was thus made right before one of those important backstories unravel, where the said mook was killed by Gin.
  • Little Busters!: In the Visual Novel, Kud's reluctance to return to Tevua stemmed partially from her relationship with Riki and partially from her fear of the dangerous conditions there, and only lasted for a couple of scenes. The anime drew this out, instead using this plot point to show Kud's backstory and how she felt unable to become a cosmonaut like her mother and was ashamed of herself, and claiming that she came to Japan to 'escape' from this. Nicely dramatic...but then why does Kud speak fluent Japanese? In the visual novel, it's made clear that Kud was always meant to go to high school in Japan and so had been taught Japanese as her dual first language with Russian. But in the anime, her moving to Japan was treated as a sudden whim outside of her mother's knowledge.
  • A few exist in Robotech thanks to its origins as a Cut-and-Paste Translation:
    • Why does Dana Sterling have green hair as a baby but is a blonde by the time she grows up? Dye job? Or because she was originally two different characters (Komilia Maria Fallyna Jenius in Super Dimension Fortress Macross and Jeanne Francaix in Super Dimension Cavalry Southern Cross)?
    • Why, when humanity come across Zor Prime, do they act surprised when they analyze him and find out he's basically human (never mind the shoehorned-in "and not just a micronized Zentraedi" statement pointing out their alleged familiarity with Human Aliens - surely the races are so similar as to be practically the same species, as they can interbreed)? Maybe the fact that the original Super Dimension Cavalry Southern Cross character actually was a (brainwashed) human, Seifriet Weisse.
    • Why cities such as New York (complete with famous Real Life theatres) exist in The New Generation series when the Earth got nuked by the Zentraedi and they barely managed to rebuild before being invaded again by the Invid? Maybe because there were no Zentraedi in Genesis Climber MOSPEADA to begin with.
  • In the manga adaptation of Puella Magi Madoka Magica, due to its nature, they had to cut out some scenes from the final stretch of the anime. One of those scenes was a Meaningful Funeral, which had its purpose be that Sayaka's body, which was left in the apartment by Kyouko, was found. Cutting out that scene just suggests that the corpse is still rotting in the apartment.
  • Shinji's reluctance to pilot the Eva in the Rebuild of Evangelion series makes far, far less sense than in the original Neon Genesis Evangelion, in which he made sure to ask what would happen if he were gone, and Misato assured him Rei would replace him. In 1.0, she egged him into leaving despite knowing full well the fate of humanity rests on his shoulders, and in 1.11, he realizes only seconds before starting the final decisive battle of the film that other people’s lives depend on him, despite having seen what an Angel can do.
  • The anime of Umineko: When They Cry contains so many of these (either by misinterpreting scenes from the visual novel, going for Rule of Cool or because of Compressed Adaptation) that the mystery becomes impossible to solve on one's own:
    • The first two are in episode 5 alone, where Battler shoots a bullet at the portrait even though the gun he picked up is supposed to be unloaded and sees gold butterflies (while in the VN Beatrice appears in person) which are supposed to indicate we are watching a fantasy scene. So the detective shouldn't see them, the only exception being the end of Episode 2, where Battler had surrendered.
    • Another one is in episode 10, where Shannon's corpse is found with the stake in her forehead; while in the VN the fact that the stake is beside her corpse is an important clue that she committed suicide in Episode 2 and 4.
    • Yet another is how in the anime, Shannon and Kanon would appear together in front of other people, such as the cousins, in scenes that weren't fantasy. In the visual novel, the fact that Shannon and Kanon never appear together in front of the other members of the family outside fantasy scenes is meant to be foreshadowing for how they're actually one and the same.
    • And of course, the entire first half of the Episode 4 Tea Party is axed, along with several important bits of information.
  • BlazBlue: Alter Memory has Ragna leave a nearly dead Hazama alive to go find Rachel and Noel. While the game establishes this by saying that Hazama has a lifelink active (which requires one to kill both members of the lifelink at the same time in order to have them die), the anime doesn't bother stating it and makes Ragna look like an idiot.
  • In I Can't Understand What My Husband is Saying, one of the main characters is shown to be a smoker in the manga, but not the anime. This becomes a problem when she's told that she needs to quit in episode 6.
  • At the end of the Gunslinger Girl anime Angelica dies. This is all perfectly fine since it's the last episode, but four years later they created a new anime called Gunslinger Girl Il Teatrino. It's closer to the manga and Angelica was revived, as she doesn't die until halfway through the manga. The problem is Teatrino tries to act as a sequel to the first anime, and her falling asleep instead of dying ruins the impact of the original ending.
  • The first episode of Wandering Son has Yuki buying Takatsuki a gakuran. In the manga Takatsuki already has a gakuran. She wore a gakuran frequently while out as a boy, and the gakuran is a hand-me-down from her brother.
  • In Ooku The Inner Chambers, the shogunate bypasses the closest heir, Tokugawa Harusada, in favor of her son Toyochiyo (Shogun Ienari). In real life, the reason Ienari became shogun was because he had been adopted by his predecessor Ieharu to become his heir. In Ooku, though, no such adoption ever took place, and everyone had expected Harusada to become the next shogun, making her abdication one of these, especially since no explanation's been given so far as to why she turned it down.
  • The Sick Episode from Monthly Girls' Nozaki-kun revolves around Sakura, Hori, and Waka having to guess how Mamiko, the heroine in Nozaki's manga, would act after Nozaki gets sick and is unable finish his current chapter. They never even think to call their friend Mikoshiba for help, despite the fact that Mamiko's personality is explicitly said to be based off his, meaning he would likely have some insight into how to write her. The manga chapter this episode was adapted from contained a line stating that they would be unable to reach Mikoshiba since he was either buying or playing a newly-released Dating Sim, but for some reason this scene was omitted from the anime.
  • A large amount occur in the anime adaptation of Tokyo Ghoul, due its severely compressed nature. One of the more notable ones is with Tsukiyama. In the manga, Tsukiyama becomes a major ally of Kaneki's in the latter half and goes through significant Character Development, culminating in a confrontation with Kaneki where he attempts to prevent Kaneki from going on a suicide mission, which causes Tsukiyama to eventually have a mental breakdown. In the anime, the plot is altered so his Character Development doesn't happen, but the confrontation plays out pretty much the exact same way, which makes his reaction come off as completely overblown and random, considering he and Kaneki have barely got know each other. Another example is that in the manga, it is revealed that Dr Kanou was intentionally creating One-Eyed-Ghouls for Aogiri and Kaneki was a successful experiment. This (along with Kanou's character) is cut from the anime, so the existence of the twins Kurona and Nashiro go completely unexplained.
  • The anime of Karneval drops a sub-plot early in the story in which Nai is framed for murdering a policeman, leaving it unexplained why Gareki needs to keep him hidden from the police in subsequent scenes.
  • Attack on Titan:
    • In the anime, the Titan eating Eren's mother is shown intentionally breaking her spine beforehand, which makes little sense for a mindless Titan to do. Though Eren's mother was struggling against the Titan's hold, it's possible the Titan was at least smart enough to know that crushing her would make her stop squirming.
    • Episode 25 shows Levi, getting Eren out of his Titan form in his 3D Maneuver Gear after defeating Annie, despite that he had an injured leg back in Episode 22, which was emphasized several times. In the manga, he wasn't able to participate in capturing Annie because of his injury.
    • In the manga, titan!Annie was scaling the Wall so quickly that titan!Eren had to throw Mikasa in order to reach her. In the anime, Mikasa was somehow able to reach her all on her own (though it would appear that titan!Annie was climbing the Wall much slower than in the manga).
  • Fairy Tail: While the anime will often make little corrections to Mashima's consistency errors, coming close to the manga has caused it to create a few of its own. The shadowy figure that Jellal is kept from pursuing is changed from a spiky haired silhouette to the hooded girl, for instance. While that was generally assumed to have been Mashima not knowing how the figure should look until later, a manga chapter that came out at almost exactly the same time as the episode revealed that it actually had been Silver, not F!Lucy.
    • The anime also had the Trinity Raven guild escape the Tower of Heaven before it collapsed, whereas they are implied to die in it in the manga. Along comes chapter 482 and 483, and it's revealed that they actually did die in the Tower.
  • While Gintama is mostly consistent (helped by two breaks), it suffered this when The Movie included a flashback scene that strongly implied that Gintoki was taken in later by Shouyo after Takasugi and Katsura, only for it to be established later on that it was the other way around. Unsurprisingly, when the anime finally adapted those chapters, it lampshaded the problem two episodes later were Gintoki answered fanmail and promptly made up a deliberately nonsense explanation.
  • The manga adaptation of The Legend of Zelda: Ocarina of Time skips the Temple of Shadows, meaning that we see Link collecting only five medallions... but when he haves to break the barrier around Hyrule Castle, the sixth medallion appears out of nowhere, along with Impa in the group shot with the other sages.
  • The first episode to Your Lie in April has Kousei mention that he has brown eyes. This is despite him very clearly having blue eyes.
  • Ace Attorney: A major part of Phoenix's backstory involves "class trial" when he was accused of stealing Edgeworth's lunch money. He was sick the day the money was stolen and didn't attend PE class, so when he was only one without alibi everyone assumed it was him. Anime-only episode "Turnabout Promise" extended the scene by showing Pheonix taking envelope in which money was supposed to be and being seen by a girl from his class. However despite being seemingly caught red-handed the trial goes the same way it did in the game with Edgeworth claiming they accuse him with no evidence, and the fact that he was seen isn't brought up at all.

    Comic Books 
  • The comic version of Tintin and the Lake of Sharks (the one made to look like a Film Comic) misses a plot-critical line of Prof. Calculus: In the animated film, Calculus said the miniature duplicator machine was "a very special version", meaning Tintin actually did try to outsmart Rastapopoulos. In the comic, without this line, it looks like an accident.
  • When Epic Mickey was adapted into a roughly sixty-pages long graphical novel, many things had to be left out. Most notably: 1° Mickey never comes across Small Pete and Big Bad Pete in the scenes where, in the game version, he does; 2° Mickey's adventure when searching for the rocket pieces are reduced to one single splash panel per quest. As long as it was standalone, alright. However, when Epic Mickey 2 got its own graphic novel, it was adapted back from the second game, without checking what had been changed for the first graphic novel; Small Pete and Big Bad Pete are just casually recognized by Mickey who acknowledges having fought them before; same goes for Pete Pan, who was met by Mickey in the Ventureland quest of the game, one of those that had gotten reduced to one panel. But, most important, the single-panel summary of the fight between Mickey and the Mad Doctor in the first installment left out The Reveal that the Doctor turned himself into a cyborg to be immune to the Blot's attack. The whole plot of Epic Mickey 2 is the Mad Doctor wanting to be human again as the Blot no longer exists and his too-quickly-made animatronic parts are starting to break down. And yet, readers who knew the first story only from the graphic novel and had not played the first game itself did not have a clue what the whole "Mad Doctor is a robot" plot point was about.

    Fanworks 
  • In Cibus Esculentus Madoka Magica, Homura and Kyoko come off as nothing but arrogant when the former seeks to protect Madoka without the others' help and the latter fights for territory. The person that SeaRover1986 (formerly McKnight) commissioned skipped over a lot of details (such as most of Sayaka's interactions with Kyousuke) assuming them redundant. However, the reason Homura originally shunned everyone's help except Kyoko's was because they brushed her off when she tried to warn them about their fates to turn into Witches and then broke down after having to kill Sayaka's Witch form. As for Kyoko, Grief Seeds which could only be obtained from Witches, were the sole reason Puellae Magi fought for territory in the first place. Both issues should be moot due to a lack of Soul Gems, Grief Seeds, and Witches; Cibi don't wield Soul Gems, because instead of succumbing to despair and becoming Witches, their purpose is to get eaten by Esurientes after keeping their numbers down for a bit, in order to help them reproduce by spawning. This trope is exactly one of two reasons why the author seeks to reboot the story (the other, more importantly, to write it in his own words for reasons explained here).

    Films — Animated 

    Films — Live-Action 
  • The Wizard of Oz famously combined the roles of the two Good Witches (of the North and the South), creating the plot hole where Glinda doesn't tell Dorothy what the slippers do on their first meeting, which would have saved her a lot of trouble. Originally the Good Witch of the North (not Glinda) gave her the shoes, but only Glinda knew they could bring her home. In the film, Glinda defends her withholding of this crucial information by explaining "You wouldn't have believed me!" despite the fact that being in a magical land with talking trees and animals she would have been willing to try anything.
  • The film version of V for Vendetta:
    • Inverted. In the original graphic novel, the disaster that allowed Norsefire to come to power was a nuclear war between the US and USSR in the 60's, and that nuclear fallout caused Britain to be shut off from the rest of the world and most of their food supply to become irradiated. Of course, this begs the question of why the fallout didn't kill everyone in Britain as well, since they're fairly close (as far as radiation is concerned) to the major population centers of Russia. The film fixed this, however, by changing the nuclear war to a simple collapse of many of the world's governments, and a massive plague secretly created by Norsefire.
    • But played straight in having the government's supercomputer Fate cut out of the movie; V having completely subverted the computer that controlled everything for Norsefire was a major plot point. Without it, his ability to never show up on any of Norsefire's omnipresent surveillance becomes strangely inexplicable.
  • On Her Majesty's Secret Service is one of the more faithful adaptations of a James Bond novel to film—which, ironically, leads to problems. In the previous novels, Bond had never met Ernst Stavro Blofeld directly, so naturally they did not recognize each other on sight in the OHMSS book. But in the previous Bond movie, Bond and Blofeld had met face-to-face. However, they still do not recognize each other in the OHMSS movie, because they didn't recognize each other in the book! The fan theory is that Bond's plastic surgery to appear more Japanese in the movie You Only Live Twice meant Blofeld didn't recognise him.
  • In the book of Sleeping with the Enemy the heroine has to live on oatmeal and beans for months after escaping her abusive husband. The film instead has Laura inexplicably affording a large and spacious house, complete with luxuries like brand name goods. Despite having only a part-time library job before her escape and not working for ages after she does settle into town.
  • The Lord of the Rings
    • The movies leave numerous questions about Aragorn to people who haven't read the books. If everyone knows him to be the rightful heir of Isildur and King of Gondor, why isn't he already? Why is Aragorn a 'Ranger from the North' if his homeland is Gondor? In the book, Aragorn's ancestry is not nearly so well known, and he has to go to considerable lengths to prove he's the rightful heir to the throne, though even the book left most of this backstory to the appendices.
    • Frodo ends up face to eye with Sauron when he just puts on the Ring in Bree — a very dramatic and special-effecty scene that's totally absent from the book. If Sauron is capable of linking his mind to the Ring so strongly, even if that's only when it is worn, that leaves questions about why he has no idea where it's moving and being used later on. Also related to the next point.
    • Near the end of the second film, Frodo clearly displays to one of the Ringwraiths at Osgiliath that he has the Ring. So in the third film, why is Sauron using all his forces to attack Minas Tirith rather than looking for Frodo? In the books, the scene at Osgiliath never happens; Sauron is never totally certain of who exactly has the Ring, but his hunch is Aragorn. This also explains why Sauron's forces fight the Armies of Men outside the Black Gate, whereas in the film Sauron seems to be doing out of a need to defend his reputation rather than any material incentive.
    • In the Return of the King movie, Aragorn, Legolas and Gimli somehow sail a ship up the Anduin to Minas Tirith all by themselves — never mind that none of them have ever sailed a ship before (lampshaded in DM of the Rings), and they'd need a larger crew anyway. Also, somehow the entire ghost army fits on that one ship while the rest are left behind. In the book, they also had thirty-something Rangers with them, plus thousands of soldiers from Lebennin who were free to come to Minas Tirith as reinforcements after the ghosts took care of the Corsairs of Umbar.
  • The Harry Potter movies:
    • In Harry Potter and the Prisoner of Azkaban, the authors of the Marauder's Map - "Moony, Wormtail, Padfoot and Prongs" - are never revealed to be Remus Lupin, Peter Pettigrew, Sirius Black and James Potter, respectively. This causes problems in the later movies when the nicknames are used with no explanation. Though attentive viewers could learn this with the fact that Pettigrew is referred as Wormtail constantly and Harry does make a vague reference to Sirius being Padfoot. Though this requires viewers to heavily put two and two together to figure that James is Prongs and Lupin Moony. Also, it leaves anyone who hasn't read the book scratching their heads as to how Lupin knew what the map was. In turn, his worry about Sirius using the map to find Harry makes no sense for the same reason.
    • The same movie is inconsistent with effects of "expeliarmus" spell. When Lupin entered Shrieking Shack he used it on Harry which removed his wand without causing him any harm, while the same spell used by Harry on Snape had him Blown Across the Room instead of disarming him. In the book Harry, Ron and Hermione used the spell at the same time and it was combined effect which threw Snape on the wall, but in the movie Harry did it alone to the same effect.
    • The sequence where the Map insults Snape is a bit weird. Snape catches Harry out of his dorm at night, which is enough to get him in trouble by itself. There's no reason for Snape to force Harry to empty his pockets, and no reason to suspect the map is anything but a blank parchmentnote . After Lupin confiscates the map, Harry somehow avoids further trouble. In the book, Snape catches Harry coming back from Hogsmeade, and has him empty his pockets and tries to reveal the Map's secret to prove Harry's been in Hogsmeade; when he can't, Harry barely escapes trouble.
    • In the fourth book, Barty Crouch Jr. receiving the Dementor's kiss is what prevents him from giving evidence about Voldemort's return (it's implied that the Dementor does this on Voldemort's orders); Harry Potter and the Goblet of Fire omits this, and simply has him sent back to Azkaban, but a) all of the fallout from the book version of events is still present in the fifth film and b) one wonders why he's not freed from Azkaban along with Bellatrix Lestrange if he's still there in movie continuity.
    • The mirror in Harry Potter and the Order of the Phoenix never makes an appearance, but a shard from it is still inexplicably a plot device in the Harry Potter and the Deathly Hallows movies. It's said to have belonged to Sirius but it's still never stated when or where Harry got it or why there is only a shard instead of a full mirror.
    • The Fidelius Charm, a magical means of protecting secrets, is used twice and prominently in the books. It never shows up in the movie, leading to a lot of baffling questions about Sirius Black and Number Twelve, Grimmauld Place.
    • A minor one from Harry Potter and the Philosopher's Stone is how the kids get caught out of bed. For some reason they decide to go to Hagrid's house at night despite finding out about the Philosopher's Stone during the day. They have no reason to sneak out, and why would Malfoy have any reason to follow them? Does he skulk around outside the Gryffindor common room waiting for them to make a move? It's just giving them one big Idiot Ball so they can be caught and have to do detention in the forest. In the book, they were out of bed at night because they were trying to smuggle Hagrid's dragon (who had hatched weeks earlier) out of the school. Malfoy knew about this because he'd read a letter in Ron's book about the time and date of when they'd be out and about to get rid of the dragon.
    • In Harry Potter and the Deathly Hallows Part 1, the kids steal Bellatrix's wand. In Deathly Hallows Part 2, Hermione heads to Gringotts while impersonating Bellatrix and is told she needs to hand them her wand as confirmation of her identity. This very nearly blows the entire plan. What's gone is the fact that, in the book, the goblins knew Lestrange's wand had been stolen and were hoping to trap Harry's friends. Movie-only viewers wonder why Hermione didn't just hand them the wand, seeing as she had it anyway.
    • The scene explaining the taboo on Voldemort's name in DH is deleted, so it just looks like the trio either have incredibly bad luck, or the Death Eaters are fantastic trackers who don't tell Voldemort where to find Harry and inexplicably go after him themselves; and Xenophilius Lovegood is insane, but happens to have incredibly good timing. This also results in an incredibly out of character moment in part 2 where Harry refers to Voldemort as "You-Know-Who" despite spending the entire series insisting on using his name.
      • The way the movie focuses on Xenophilius says "Voldemort" implies that his name can alert Death Eaters and Snatchers to an exact location, but the explanation is still gone.
    • In Harry Potter and the Chamber of Secrets after Harry finds the diary, as soon as he realises it can talk back he immediately asks it about the Chamber, even though he would have no reason to suspect the diary is connected in any way to those events. A deleted scene shows (as in the novel) a conversation the boys have with Hermione regarding the diary.
      • A much more baffling plot hole occurs immediately after, after Harry is shown the memory of Hagrid being caught with Aragog the very next scene is where the diary is stolen back. Harry meets nor speaks to anyone this entire time and no explanation is given later when it is revealed that Ginny stole the diary back. In the novel, the Valentine's Day scene fills in this gap.
    • The Thestrals can only be seen by people who have seen death. In both the books and the movies, it is Cedric's death that causes Harry to start seeing them. However, he actually witnesses two deaths in the films prior to Cedric's. The first was his mother — in the books, he was laying in his crib and only saw the flash of light from Voldemort's wand, but in the films Harry is sitting up and clearly sees the murder in the flashback in Harry Potter and the Deathly Hallows Part 2. The second is Professor Quirrell, who Harry incinerates with The Power of Love. In the books Harry passes out before Quirrell dies, however in the movie he kills Quirrell himself and only passes out when Voldemort attacks him afterward. Despite both of these, the Thestrals remain invisible to Harry until Harry Potter and the Order of the Phoenix. JK Rowling herself had to address this considering the Thestrals didn't appear at the end of the fourth book. They don't appear visible until the person in question has processed the death and come to accept it.
    • Dobby's appearances in the fourth, fifth and sixth books were cut out of the corresponding movies, meaning Harry was the only main character apart from Dumbledore to have met him. This makes Ron and Hermoine's happy reactions to his reappearance in ''The Deathly Hallows Part 1" make little to no sense at all.
    • A minor one in the first movie comes during the flying lesson. In the book, Madam Hooch tells the students to start flying on the count of three; Neville, who's terrified of flying, accidentally jumps into the air on "two". In the movie, they're supposed to start flying when Madam Hooch blows her whistle, but when she does, Neville is the only one to start flying and everyone starts telling him to come down immediately.
    • The films omit the entirety of Percy Wesley's minor-but-existent character arc, leaving it totally unexplained why he's suddenly working for Umbridge in the fifth movie, then just as suddenly back with the good guys in the finale.
  • In Infernal Affairs, only Superintendent Wong knows the identity of the undercover cop. When he's murdered, the cop has no one in the police department to turn to. In The Departed, both Captain Queenan and his assistant Sergeant Dignam know who the undercover cop is. When Queenan is murdered, the cop acts like he has no one to turn to, but Dignam is simply away on suspension. Why no one bothers to look him up is never explained. Dignam's sudden reappearance at the end is treated as a surprise, but fans of the original would be waiting for that dangling thread to resolve for half the film.
  • In The Last Airbender
    • Earthbenders are kept on land, yet do no earthbending at all. In the original show the Fire Nation keeps Earthbenders it captures on a metal platform at sea, far away from the rock and ground they could use to help escape. Both versions explain that the earthbenders have "broken spirits," but in the show, their spirits are broken from being defenseless for so long, while in the film, the earthbenders have always been right beside their weapons for escape.
    • The film adds the idea that firebenders can only manipulate pre-existing fire, yet nobody ever tries to put out the firebenders' fires beforehand to effectively disarm them.
  • In ''Before I Go To Sleep", it is stated that Mike abducted Christine four months earlier, and since then has taken advantage of her amnesia to pretend to be her ex-husband Ben. In the book, the real Ben (who despite their divorce, still deeply cares for Christine) has not been aware of this because he has been working abroad for several months. The film, however, makes no reference to Ben having been away, but maintains the situation of him not having been in contact with Christine for a long time.
    • In the book, Christine's friend Claire does not realise and tell Christine that Mike is not Ben due to having been out of contact with Ben for years, and so hadn't spoken to him to realise something was wrong. In the film, Claire is easily able to contact Ben, and their lack of contact is instead explained purely out of Claire's embarrassment about her affair with Ben.
    • The book makes it very clear that Mike is psychotic, which explains the considerable flaws in his efforts at deceiving Christine. The film does not really follow this portrayal of Mike, which leaves the view wondering why his actions are so obviously irrational and badly thought out.
  • The short story turned short film Paul's Case has an example of this, although it's not so much a plot hole as a moment of characterization kept in when it didn't fit with the other changes. In the original story, Paul is portrayed in a way that makes it easy to assume he has mental problems. In the film he's turned much more sympathetic, and is shown to be a victim of circumstances, yet the film keeps in a scene where Paul creepily fantasizes about his father shooting him when he crawls through his basement window.
  • The Chronicles of Narnia:
    • In the film of The Voyage of the Dawn Treader, a search for seven swords is superimposed over the novel's search for seven missing Telmarine lords. The claim that at least one of these swords was given to Caspian's father by Aslan is an Adaptation-Induced Plot Hole: Aslan hadn't been seen in Narnia for centuries prior to the events of Prince Caspian, and as a Telmarine, Caspian's dad would've been brought up to believe "Aslan" was either a myth or a monstrous lion-demon, not a benefactor.
    • The same film otherwise narrowly avoids another Plot Hole. On the Dufflepuds' island, Lucy gets kidnapped because only a girl can read the spell to break the enchantment. The film adds another girl, Gael, to the cast. However the Plot Hole is avoided when one of the Dufflepuds notes that Gael is also a girl — but they decide to kidnap Lucy because she has a book next to her, indicating she knows how to read.
  • In Flowers in the Attic after the husband dies, Corrine has to go back to her rich family and hope for an inheritance or else her children will have no money. The book is set in the 1950s but the film takes place in the 80s (when it was made). Corrine not attempting to work or not having a pre-existing job already is odd since there were less housewives that stayed exclusively at home in the 80s than there were in the 50s. Another one relates to the Age Lift. Chris and Cathy are fourteen and twelve respectively in the book but the movie ages them up to at least sixteen or seventeen. One wonders why they didn't try to find jobs either. Also as they're older, them being afraid of their grandmother is a little less believable - Chris would easily be able to overpower her.
  • Sin City:
    • The movie moves Dwight's "Most people think Marv is crazy" monologue from A Dame to Kill For to The Hard Goodbye. This works fine in a standalone movie, but in the comics the chronology of that night is very well fleshed out. Its revealed that while Marv was drinking at Kadie's after Goldie's murder two cops were questioning Shellie about Dwight's whereabouts. At that point in the story Dwight is recovering from events in his own story, so he couldn't be anywhere near Kadie's that night. Furthermore, he underwent plastic surgery which gave Dwight his appearance in the movie but that only happened months after the events of The Hard Goodbye, at which point Marv was on Death Row. Since Sin City 2 is slated to use A Dame to Kill For as its lead story they'll have to break from their own continuity or alter the timeline and make the entirety of Dame to Kill For take place before Hard Goodbye.
    • There's also The Salesman, the assassin from "The Customer is Always Right," who later becomes The Colonel, the Big Bad of Hell and Back. Since The Colonel is dead by Boom, Headshot (and quite deservedly so) at the end of Hell and Back and the events of The Big Fat Kill take place after that story (Manute shows up alive in the former and is killed in the latter), the Salesman doing to Becky what he did to his "customer" in the other story at the very end of the film adaptation can't exactly happen in Sin City canon unless someone else is the Colonel in the film adaptation of Hell and Back.
  • In the original Total Recall (1990), there was a perfectly legitimate explanation why Hauser had to have his memory erased and take on the Quaid persona, because Quato, the leader of the resistance was a mutant who could read minds, and could easily detect an undercover spy therefore. But in the remake, the leader is just some standard normal guy without any mind reading ability, thus eliminating the need to erase his memory, and making the whole premise of the film rather faulty.
  • Watchmen gives a rather weak explanation as to why The Comedian was killed. In the comic it's laid out that it's because he discovered the secret island where Veight/Ozymandias was conducting genetic experiments allowing for the creation of the giant squid in the climax but since this part is removed from the film and the ending is changed, it doesn't appear. Rather the reason given is simply that he discovered Veight/Ozymandias's plan after being ordered by the government watchlist to investigate him, and that's all the explanation we get.
  • While the original Battlefield Earth novel isn't exactly regarded as a masterpiece of plotting, the film still introduces various plot holes and problems of its own. Perhaps the most glaring is that the Psychlos somehow missed Fort Knox altogether in the film, whereas in the novel it was one of the first locations they hit. In the novel, the rebels acquire gold from an armored car stocked with bricks. The Psychlo sensors didn't notice the gold 1,000 years prior due to the car's frame blocking the scan.
  • In the 2012 adaptation of Les Miserables, there are several minor ones that crop up. In the "Who Am I" number, Valjean simply tells the judge who he is to clear the falsely-accused man's name, providing no more evidence than saying that Javert will recognize him (and given that Javert just spent the last scene saying he now believes that Valjean is not the convict he was looking for, it comes across as Javert having rather bad judgement). In the musical, the script specifies that Valjean proves his identity by showing the tattoo of "24601" branded on his chest. Another takes place when Thenardier and his gang try to rob Valjean's house. In the play, after Eponine gets rid of them, Cosette pretends she saw a mysterious shadow outside which caused her to scream, thus causing Valjean to think that the "shadow" was Javert lurking outside. In the movie, Cosette has already gone to bed and thus Valjean only hears Eponine screaming and... somehow comes to the conclusion that this means that Javert is nearby.
    • Eponine still crossdresses in this version, but for unclear reasons as there are women openly staying on the barricades.
  • In City of Bones, Simon was abducted by vampires because he'd been turned into a rat, and they mistook him for one of them. In The Mortal Instruments: City of Bones, they took him as a hostage because they wanted the Mortal Cup. The movie failed to give us any possible use Vampires could have for the Cup.
  • Full Circle completely leaves out the connection between its main character and antagonist, which was detailed in the original book.
  • Dawn of the Dead (1978) was reworked into the very different film Zombi for European audiences, with a faster pace than the American version at the cost of a new plot hole. Originally, Roger and Peter succeed at their first round of barricading the mall doors with trucks, causing Roger to start celebrating while they're getting more trucks, get too cocky, and then get bitten by a zombie. Zombi skips over the first part so Roger's careless behavior comes out of nowhere before they've accomplished anything and is completely out of character.
  • Troy attempts a Demythtification of The Iliad, telling the story of the Trojan War with no mythic or supernatural elements whatsoever. While most of the story works fine, the finale with the Trojan Horse stretches Willing Suspension of Disbelief quite a bit. Sure, everyone in the audience likely knows that the Trojans are going to take the horse with the Achaean army concealed inside, but more skeptical viewers might wonder just why the hell they never think to wonder if it's a trap, or even inspect the horse before taking it into the city. Well, in most mythical accounts of the Trojan War, they did. The Trojan priest Sinon pointed out that it was probably a trap...and was promptly strangled to death by a sea serpent sent by Poseidon, who was on the Achaeans' side. After that, they understandably got scared, and came to the conclusion that they'd risk the Gods' wrath if they refused to take it. In Troy, there are no sea serpents, and none of the Trojans even question the wisdom of taking a giant wooden horse into their city walls after the enemy Achaeans all mysteriously disappear.
  • Minor one in Into the Woods. Rapunzel is actually the Baker's long lost sister, having been taken by the witch when he was a toddler. The Baker never finds this out in the stage show, and it's the same case in the film. The Plot Hole comes from the fact that the Narrator is a separate character in the stage show. For convenience purposes the Baker also serves as the Narrator in the film. And the film ends with the Baker narrating the story to his newborn son. But since he never finds out Rapunzel is his sister, it begs the question of how he knows this in narration.note 

    Live-Action TV 
  • Game of Thrones:
    • In the intro to the novel A Game of Thrones, the last surviving Night's Watchman is Gared, who stays with the horses during the Others' attack and flees when he hears fighting. In the series, the sole survivor is Will, who we see come face-to-face with the White Walkers. How or why he survived is never explained.
    • A similar event occurs in the Season 2 Finale: The White Walkers are shown looking at and walking past Sam, despite having no explained reason to leave him alive. In the prologue to A Storm of Swords (the chapter which this scene is drawn from), Sam is with the rest of the Night's Watch and doesn't explicitly come face to face with the Others.
    • In "Mother's Mercy", the Night's Watch, led by Alliser Thorne, declare Jon Snow a traitor and seemingly kill him for letting the Wildlings, the Night's Watch's long-time enemies, through the wall in exchange for their aid against the White Walkers. However, one episode prior, Thorne was in the perfect position to stop this from happening when the Wildlings showed up while Thorne was in command of Castle Black. If he thought letting the Wildlings through was such a terrible thing he could have just refused to open the gates and there'd be nothing Jon or them could do about it, but instead he lets them through only to turn on Jon for it in the next episode. In the books, Jon's decision to help the Wildlings wasn't the cause of the other watchmen betraying him, but rather his decision to aid Stannis against the Boltons, thereby compromising the Night's Watch's neutrality, a plot point that is dropped in the show.
    • While they're following Sansa north in the entirely show-invented plotline, Brienne tells Pod that they won't be able to go through Moat Cailin, and so will have to go around it. However, Moat Cailin is such a valuable castle to hold precisely because there is no way around it - it is impassable swamp which only House Reed know how to navigate. This is made clear in the previous season, when the Boltons place huge importance on taking Moat Cailin from the Greyjoys for precisely this reason - Roose Bolton even notes that he had to smuggle himself back into the North by sea due to Moat Cailin being blocked to him.
    • The show adds the fact that Cersei had a child from Robert that died in infancy. However, they keep the same prophesy that Cersei will have three children.
    • In the books, Balon Greyjoy dies shortly after Melisandre and Stannis cast a spell to kill Stannis's many enemies, Balon included. This helps convince Stannis to trust Melisandre's power. In the show, Balon outlives Stannis, but Stannis still has the same confidence in Melisandre's magic.
    • Speaking of Melisandre, in the books it is implied that Melisandre merely foresaw the deaths of Robb Stark, Joffrey Baratheon and Balon Greyjoy, and tricked Stannis into thinking she'd caused them through magic. The show drops this little detail, making it look like she actually did kill them. This can leave a viewer wondering why Melisandre doesn't just use her magic to kill all of Stannis' enemies. Sure, they'd need more kingsblood and/or sex, but it's not like they had no way of getting that....
  • Mystery Science Theater 3000 had on-and-off trouble with this, due to the format of the show: they had to trim out questionable content and pare down the films they riffed so that, in combination with the host segments, the show would only fill roughly 90 minutes of run time (in a two-hour time slot). The show's staff stressed that they tried not to artificially add to a film's poor quality with their edits, but it occasionally happens.
    • The catastrophic Joe Don Baker vehicle Mitchell was 97 minutes long, but was cut down to 70-75 minutes. One of the things cut out was the death of John Saxon's character Mr. Deaney, one of the film's primary antagonists. Despite what some MSTies have mistakenly assumed, though, Best Brains was not responsible for this one; the scene was already trimmed from the Lorimar TV print of the film they chose for riffing (explaining why they joked about Saxon's absence, as they don't pick on a movie for cuts they themselves made to it).
    • This was actually averted in Sidehackers. One of the scene that had to cut out due to content involved the hero's girlfriend being brutally gang raped and killed by the antagonist and his lackeys. In order to explain why the main heroine suddenly disappears halfway through the film, one of the bots makes the following remark.
      Crow: "For those of you following at home, Rita is dead."
    • The Movie also cuts some exposition from This Island Earth. And by some, we mean "MST3K: The Movie is 12 minutes shorter than the film it's riffing" (though that's mainly due to the studio believing average movie audiences wouldn't sit through a full 90 minutes.)
    • The deletion of Neville Brand's character from Angels Revenge causes a number of plot holes to crop up — namely, why the female officer is part of the group, why the police never appear involved, and what did the girls do with all the cocaine they snagged at the beach.
  • The TV adaptation of Going Postal skips the subplot about what happened to the previous postmasters by revealing they were killed by Reacher Gilt's banshee assassin. However, the only reason the Post Office is standing in the book is that Gilt doesn't see it as a threat; as soon as he does, he doesn't mess around killing postmasters, he burns the place to the ground. In addition, a rearrangement of scenes means that TV Gilt has to kill Horsefry personally, when the man is visiting his office, rather than employing the hard-to-track Mr Gryle to swoop down and kill him in his own home Despite the TV version retaining Ankh-Morpork's capable and determined Watch (and its bloodhound-like werewolf), this crime apparently goes unsolved.
    • Talking of the Watch, Angua twice arrests Moist for breaking his parole by leaving the city, but for some reason there was no problem earlier when he took a horse to Sto Lat. (In the book, it's made clear he can leave the city as long as he's on Post Office business, which applies all three times.) It's also not clear why this is even Angua's job; Mr Pump is still his parole officer, and collects him when he actually tries to escape.
    • The adaptation also completely removes the board of directors and makes Gilt the sole owner of the company. That means that his main objective is now to drive his own business into the ground for no apparent reason instead of it being a massive scam.
  • In The Worst Witch
    • Cackles Academy has a fair share of teachers that aren't seen and don't come into the story that much but the TV series shows that there are only four teachers at the school - Miss Cackle, Miss Hardbroom, Miss Bat and Miss Drill - yet in the second season a Miss Gimlett is mentioned as being the Year Head for the 2nd year girls but has moved away over the summer. Miss Gimlett was never mentioned or referred to before that episode and apparently never used the staff room. In the books we didn't know what Miss Gimlett taught since the only lessons the girls were ever shown having were potions and chanting but the TV show has Miss Cackle teaching spells and no other subjects, apart from PE so that begs the question what did this elusive Miss Gimlett teach before she left?
    • Similarly the second season follows the third book's plot of having Mildred and Ethel banned from the Halloween celebrations after what happened last year. When the Grand Wizard sees Mildred he says straight from the book "are you not the girl who ruined the Halloween celebrations last year!" which creates a Plot Hole. In the previous season, the episode "Sweet Talking Guys" added an original plot where the Grand Wizard visits the school with some apprentice wizards and ends up impressed by Mildred during a public speaking contest. So why would he have a problem with her being at the Halloween celebrations? Especially when he doesn't reference them at all in "Sweet Talking Guys".
    • The same episode otherwise abverts this. Griselda Blackwood's only appearance in the books was Mildred tying her up and going to the Halloween celebrations in her place. In the TV series however, Griselda is expanded into one of Mildred's friends so keeping this intact would have created a Plot Hole. So this role is given to Drucilla instead.
    • The Halloween Episode keeps the book's plot point of having Miss Cackle and Miss Hardbroom not believing Mildred's story about the wicked witches' attempted invasion. They only start to believe her when Mildred mentions a woman that looks like Miss Cackle - and the latter reveals she has a twin sister. This works in the book because Mildred had turned the witches into snails and thus couldn't prove herself. But in the TV show, she just shrinks them - so you have to wonder why she doesn't open the box immediately so that the two believe her. Additionally Miss Drill has been involved in the TV series, rescuing Mildred from the woods. So the other teachers should have no reason not to believe Mildred with a member of staff vouching for her. What's more is that the witches got inside the school in the TV show and Miss Cackle got turned into a frog.
    • Similar to the Miss Gimlett example above, the Two-Teacher School element creates minor plot holes in various episodes. With Miss Cackle, Hardbroom, Bat and Drill as the only teachers - there are plenty of instances of one teacher taking Mildred's class, and the other three wandering freely around the school. So who is taking the classes for the other years?
    • Inverted in one case where the book had a Plot Hole that the TV series fixed. In the first book Ethel is turned into a pig by Mildred but can still speak and so rats her out to Miss Hardbroom. The Plot Hole comes in the third book when Ethel turns Mildred into a frog and Mildred can't speak to humans. In the TV series Ethel can't speak at all when she is turned into a pig, fixing the plot hole.
  • The 1985 Alice in Wonderland tv miniseries:
    • In the book, Alice tells the Blue Caterpillar that she was attempting to recite a poem earlier, but the words came out wrong (she does this while she's in the hall of doors). But in the movie, Alice didn't do this, making nonsense out of the line where she tells the caterpillar she did this.
    • In the book, Alice first sees the Cheshire Cat in the Duchess's house. In the movie she first sees him after she's left the house. Later when the Cat appears in the sky at The Queen of Hearts's croquet ground, Alice tells everyone that she thinks the Cat belongs to the Duchess. But Alice didn't see the cat at the Duchess's house, so how would she know?
    • When Alice starts growing at the Queen's court, she protests that she hasn't eaten a piece of mushroom or drunk anything. The problem is that in the movie's scene with the Caterpillar, Alice didn't learn what it was that would make her shorter or larger and just walked off without any mushroom after the caterpillar vanished.
  • The Walking Dead accidentally created a Plot Hole in the Governor's motivations due to the way Woodbury was depicted. In the comics, Woodbury was not well equipped to handle the Zombie Apocalypse and the Governor desired to move his people to the much safer prison. The TV series reversed this, making Woodbury a sanctuary and the prison less secure. This makes the Governor's vendetta against Rick's group seem rather pointless, especially given that he was fairly reasonable in his first encounter with Michonne and Andrea. He did eventually get a more plausible reason for his hatred -Revenge on Michonne for stabbing him in the eye and killing his zombified daughter- but this was only after the conflict between their groups was well underway, and it's also made clear that even if Rick handed Michonne over to him as a peace offering, he'd destroy the prison anyway For the Evulz.
    • Season 4 has attempted to fix this, after the first assault on the prison fails the Governor kills most of his followers and burns down Woodbury in a rage. However, after he meets Lilly Chambler and her family and bonds with them, he once again begins seeking a safer home, and with Woodbury gone he's set his sights on the prison.
    • The initially disproportionate personal vendetta goes for Michonne too. In both versions of the story, Michonne waits, sword ready, in the Governor's quarters with the intention of settling a personal vendetta alone and where she could take her time with him. In the TV series this seems a bit unwarranted for a man that she knows as an affable leader she herself does not trust, who may or may not have been behind Merle's orders to follow her unsuccessfully and coerce strangers back to Woodbury. In the comics, Michonne's personal vendetta stems from the Governor having restrained and repeatedly raped her, and tortured and maimed her companions. While her destruction of the Governor's eye was not done through torture in the show, it was clearly along the lines of her intentions when she waited for him in his room, despite her not having nearly as much cause for such brutality as her comics counterpart.
  • Power Rangers:
    • In the Power Rangers Turbo episode "Rally Ranger", the Rangers fight a giant-size Porto with just their Turbo Weapons. Not once does the thought occur to them to summon their Turbo Zords. That's because the Carranger episode this fight was taken from was the one before they gain their Mecha.
    • Some series of Power Rangers have it as a result of being more or less straight adaptations of their Super Sentai source material. Power Rangers Megaforce is a stand-out example, since the Rangers were Expies of the original Mighty Morphin' Power Rangers, even when Super Megaforce tried to adapt stories from Kaizoku Sentai Gokaiger beat-for-beat. In particular, one episode has the Blue Ranger losing to a sword-wielding Monster of the Week, suffering a major hit to his pride, and undergoing Training from Hell to defeat the monster. This makes perfect sense in Gokaiger, since its Blue Ranger is a swordsman with a lot of pride in his skill, but since Megaforce's Blue is a Hollywood Nerd, he ended up adopting Gokai Blue's personality for the duration of that episode just to make the plot work, then reverting back to normal for the rest of the series.
    • Mighty Morphin' Power Rangers might leave some older viewers scratching their heads at the fact that the Rangers all have Zords and costume emblems based on dinosaurs, even though they got their powers and equipment from Zordon—a wise alien trapped in a time warp, who has no logical reason to be interested in extinct creatures from Earth's past. For that matter, how the hell does Zordon even know what dinosaurs look like? And if he's from another planet, why does he have a Command Center on Earth with a stasis tube to contain his consciousness? Well, in Kyoryu Sentai Zyuranger, all of those things made perfect sense. The Rangers' mentor was an immortal human wizard named Barza, the Rangers themselves were warriors from an idyllic past when humans and dinosaurs lived in perfect harmony, and their vehicles were gifts from a race of godlike beings who took the forms of animals. The American redub replaced Barza with Zordon and cut out the prehistoric backstory, but forgot to explain why the Rangers and their mentor were obsessed with dinosaurs.
  • The Age Lift done to Richard in the miniseries adaptation of The Pillars of the Earth causes a few problems. In the book, he's only a child and dependent on his older sister Aliena when they're orphaned and lose their home, which causes them a few problems due to the misogynistic 12th century society they're thrown into, like a wool trader who refuses to do business with her. In the series Richard seems to be the same age as her, making one wonder why he doesn't step in during situations like this. Then again, Richard doing something actually useful would be a huge Out-of-Character Moment compared to his portrayal in the books.
  • The 1980s adaptation of The Day of the Triffids has a very mild one in the very last episode. The mysterious "comet debris" that caused mass blindness and a mysterious and deadly disease that almost wipes out the survivors were attributed to malfunctioning Kill Sats in the original book, which would have been quite plausible in the early 1960s, but the Outer Space Treaty banned the placing of weapons of mass-destruction in orbit even if anyone had wanted to do so.note  But when the BBC adapted the show in 1981 they decided to do a straight Setting Update, without changing this plot element. They get away with it because in both versions the viewpoint character is only speculating from the point of view of a somewhat informed layman, and what actually happened is left ambiguous.
  • Doctor Who Novelisations:
    • Doctor Who and the Space War, the novelisation of "Frontier in Space", removes the twist Cliffhanger ending of the Doctor getting shot, but both Doctor Who and the Planet of the Daleks and "Planet of the Daleks" start with the Doctor near-fatally wounded.
    • The adaptation of "The Robots of Death" has an utter howler when a character shows up to watch the Doctor being tortured, who was last encountered having been strangled to death.

    Radio 
  • In the radio version of New Dynamic English, Max said that he's born in Useful Notes/Portland and moved to San Francisco when he's in college, despite that in the software he said that he lived in San Francisco "all his life".
    • Max also has a son, while in the software's Module 2 Matrix Vocabulary, he said he has a daughter, and later children in Module 4. One can wonder about his daughter's fate.
    • Max said that his full name is "Max Wilson", despite that in Module 1, he said that "Max" is short for "Maxwell".
    • Richard Chin/Chen from Module 1 is the same as the one in Module 6; an elementary school teacher who's married to a fashion model. The illustrations from the software differs, however.

    Tabletop Games 
  • Dungeons & Dragons has this happen between editions.
    • In the 3.5 player's handbook, a priest of Pelor, the quintessentially good deity of Greyhawk, is seen using a Symbol of Pain spell, which good aligned gods cannot grant. What happened was that they reused some artwork from the 3.0 PHB of the priest using the pain aspect of the Symbol spell, which was originally an unaligned spell.
    • Drow society in Forgotten Realms is based off of infravision, but 3.5 removed infravision.
    • The original CD&D supplement for the Mystara setting's nation of Karameikos included a three-paragraph summary of the content of an epic poem, roughly equivalent to the real-world Iliad, that underpins much of the native Traladaran culture's history and religion. When Karameikos was re-packaged for an AD&D audience, the three-paragraph summary was presented as the actual saga, meaning it was no longer a poem, no longer exciting, and no longer appealing enough to justify the Traladarans' having revered it for hundreds of years.

    Video Games 
  • The Warriors:
    • One scene has Masai demand to know who The Warriors are and none of the other Riffs can answer him. This makes sense in the film, since we have no reason to believe the Warriors ever did anything to stand out. In the game however, the missions involve fighting their way through several gangs (trashing dozens of members with only four, at most, of their own), beating up or killing several other gang leaders and overthrowing the rival gang of Coney Island who they split from. While the Riffs ARE the biggest gang in the city, and presumably don't follow everything that happens with the small-time gangs, it is strange to think that none of them would've heard about the Warriors given all the havoc they cause.
    • In the movie, Sully has never heard of the Warriors, and is somewhat open (if reluctant) to them passing through his territory. In the game, there's an earlier mission in which Sully starts telling everyone that he and the Orphans wrecked the Warriors, leading the Warriors to invade Orphans territory to wreck them, and culminating in them trashing Sully's car. This would make Sully far less likely to let them go during the events of the final mission/movie, and far more likely to immediately start a fight. The only real difference between the two versions of the scene is that in the game, Mercy reminds Sully that they wrecked his car (like he'd forget).
  • In Metroid Prime Trilogy, the help for the combat visor in the first game notes that the visors you possess are indicated in the lower left of the screen. This is not true for the trilogy version where they are in a separate menu accessed by holding - and selecting the visor from a menu, and only the current visor remains listed on the HUD.
    • Another example, from the same game (also from the North American re-release of Metroid Prime). In the original release of Prime, Metroid Prime had been captured by the Space Pirates and studied for a while. Then, it broke out, merged with some Pirate gear, and escaped back to where it came from. The problem is that where it came from was supposed to be behind an impenetrable barrier that you spend most of the game getting the key to. So this was changed in the re-releases to fix the plot hole; it was never captured by Pirates and so forth. However, in so doing, they introduced another plot hole: if the Metroid Prime never was captured by the Space Pirates, where did it get all that fancy Pirate gear that it uses on you in the first battle? And why is it even called "Metroid Prime" since it was the Pirates who gave it that name?
  • Advanced V.G. II: The opening story mode cutscene features a flashback to Yuka's televised match with Jun, using the exact same footage from the OVA. This suggests that the game takes place sometime afterward, except it creates two problems:
  • The second stage of Turtles in Time, "Alleycat Blues", takes place in a back alley in broad daylight. This isn't a problem for the '80s Turtles, who moved around freely during the daytime, but their Mirage comic and 2003 incarnations generally stick to nighttime activity - so when the game was remade as Turtles in Time Re-Shelled, using designs from the 2003 cartoon...
  • A plot hole created between platforms of The Fancy Pants Adventure: World 3 appears in the Canopy Forest level. There is a squirrel on a balloon who gives a minigame challenge, and reward the player with "a squirrel-y prize". In the console versions of the game, that prize is an acorn-shaped hat, while in the online Flash version, it's a rather nebulously relative pair of green pants.
  • The first world in Rayman involved fighting a tribe of "Moskitos", one of whom (Bzzit) became your ally after you beat him. In the GBA and PC versions, the lead Moskito, who was red in the PSX version, had the exact same colors as his underlings, leaving several players scratching their heads as to why the guy whose Heel–Face Turn they made such a big deal a few levels ago is suddenly out for your blood again.
  • The Bourne Conspiracy video game follows the plot of the first Bourne movie pretty accurately except for some added flashback missions and a runup to the hit on Wombosi at the start. However this actually hurts the premise since it makes the Treadstone program look not so bad, and Bourne more like a coward than someone with principles. The game doesn't allow you to use lethal force against civilians or police, something the movie implied that Treadstone was quite lax about, it creates an odd moral issue when Bourne gets a burst of conscience and can't kill Wombosi, despite that he slaughtered dozens of his mooks to get to him and also killed Wombosi's Dragon, (a character that doesn't appear in the film), and depicts the flashback missions as quite noble and just despite the film implying that they often consisted of killing innocent people who happened to inconvenience the CIA, involving things like fighting off a terrorist assault on an airport and stopping a terrorist from obtaining a dirty bomb. Pre-amnesia Bourne and Conklin come across more like ruthless Anti-Heroes rather than the immoral killers as portrayed in the movie.
  • The obscure NES game Menace Beach revolves around rescuing your girlfriend from a villain. The enemies who attack you are his henchmen sent to impede your progress. The game was later rereleased under the title Sunday Funday as a Christian edutainment game. Problem? To make the game more Christian, the plot was changed to be about you trying to get to Sunday school. With this change however, there is now no explicable reason for all these ninjas and criminals to be trying to violently murder your character. The Angry Video Game Nerd said it best in his review:
    "Who are these raging atheists trying to stop you from going to Sunday school?"

    Web Original 
  • In Dragon Ball Z Abridged, Vegeta kills Ginyu rather than sparing him like he did in the source material. This eventually brings up a plot hole when the Ginyu Forces gather together at King Kai's planet yet Captain Ginyu himself is not present as he doesn't die in the canon. This will also produce an even bigger plothole should Team Four Star decide to adapt Dragon Ball Super, since its version of Dragon Ball Z: Resurrection ‘F’ has Ginyu make a grand return by body-jacking one of Freeza's new minions.

    Western Animation 
  • Mocked in Mission Hill when Kevin and his friends go to see the movie adaptation of "Feminoid", a comic series they like. Kevin spends the entire movie screaming what is wrong with the movie at the screen, including this:
    Kevin: NOOOOO! She can't talk! Dr. Klaveus removed her voice adapter in issue 213! READ ISSUE 213!!!
  • Batman: The Brave and the Bold followed the comic book Retcon that established that the scarab that empowered the Golden Age Blue Beetle was actually an alien robot. No effort was made to explain why the original Blue Beetle's costume still looked like spandex tights when Jaime, the current Beetle, had a suit of Powered Armor.
    • Young Justice, however, did take steps to fix this discrepancy. When the original Blue Beetle was shown in a Flashback, his outfit was a cross between his Silver Age tights and Jaime's scarab armor.
  • In the Ellipse-Nelvana Animated Adaptation of Tintin, part of the dialogue shows that The Calculus Affair took place before the moon stories (Destination Moon and Explorers on the Moon) instead of the other way around like in the original comics. However, in The Calculus Affair we see Tintin and Haddock fought off both Syldavians and Bordurians to rescue Professor Calculus. Yet in the moon stories, we see Calculus happily working for the government of the country who kidnapped him (Syldavia).
  • The X-Men episode "Cold Comfort" contained a Flashback Mythology Gag referencing the original Stan Lee /Jack Kirby series by featuring a battle between the teenage founding X-Men and Magneto. The problem? In the show's continuity, it's established that Angel was never a member of the X-Men, and that the team didn't encounter Magneto until years later when they were all adults.
  • Wolverine and the X-Men features a similar Plot Hole during a Whole Episode Flashback which shows the Silver Age X-Men battling Magneto. Iceman is a teenager and significantly younger than the founding X-Men in the show, so it makes no sense for him to have been part of the team when they were all teens themselves. He'd have to have been a child when Xavier recruited him for any of that to make a lick of sense. What's worse, in the flashback he actually looked older.
    • Theoretically, it could be that this Iceman is an entirely separate character, explaining the "snowman" look and age discrepancy - after all, it's incredibly common for mutants to have similar powers/themes across all X-Men media. This, however, raises the question of why we never learn what happened to the original Iceman and no one ever mentions him.
  • In The Smurfs original comic books, it has been established that Grouchy Smurf was the Smurf who was bitten by the Bzz Fly in "The Black Smurfs", and his current moody behavior was caused by this (either due to having been more time as a Black Smurf as the others, or because he was directly stung by the fly, while the others were bitten by their infected peers). The Hanna-Barbera Animated Adaptation had several episodes that included Grouchy Smurf (as grouchy as ever) before adapting this story into "The Purple Smurfs", so his behavior is unexplained. It cannot even be excused by Anachronic Order, since Lazy Smurf is the one bitten by the Purple Fly, and it's shown later when Grouchy Smurf is bitten by a Purple Smurf, even telling at mid-transformation "I hate... GNAP!"
  • In episode 7 of Truckers, Gurder claims he's never wanted to lead anyone because he sometimes has doubts about things. In the original book, this refers to an earlier scene (which appears in episode 5) where the Abbott tells Masklin that, "The most important thing about being a leader isn't being right or wrong, but being certain. Though, being right usually helps." This line of dialogue is omitted from the TV adaptation, removing the reason for Gurder's worry.
  • Avengers Assemble
    • In the original Infinity Gauntlet storyline, one of the things that led to Thanos' downfall was his decision to purposefully hold back against the heroes so that he could impress Death. The cartoon adapts this plot point but removes Death from the equation, meaning Thanos basically holds back against the heroes either because of his own arrogance or a random case of Bond Villain Stupidity.
    • Season 3 adapts the original Thunderbolts story arc from the comics, which involves the Masters of Evil, a team of super-villains, posing as a new super-hero team in order to get people to trust them. In the comic, it actually made sense that nobody recognized them despite the fact they were still using the same powers, since the Masters of Evil had been through several line-up over the course of their career, and the members they used for the impersonation all had super-powers and abilities that were, for the most part, pretty common in the Marvel Universe (Baron Zemo/Citizen V was a Badass Normal like The Punisher, Hawkeye or Black Widow; Beetle/MACH-1 had a Powered Armor like Iron Man, War Machine or nearly everyone in Iron Man's Rogues Gallery; Goliath/Atlas had Size Shifting like any hero using Pym particles; Moonstone/Meteorite was a Flying Firepower like Ms. Marvel and plenty of other characters, and so on). Plus, they showed up at a time where most heroes in the Marvel Universe had gone missing, making it easier for them to get accepted with no question, since people were all too happy to have a new team serving as their protectors. In the cartoon, the Avengers have only met the Masters of Evil a few episodes before they show up disguised as the Thunderbolts, the only line-up they have displayed is the one they use while in disguise, very few of the characters with similar super-powers have been introduced, and every Marvel hero is still alive and well, so you are left wondering how the Avengers don't put two and two together when this mysterious new superhero team with the same powers than a super-villain group they recently fought shows up.

http://tvtropes.org/pmwiki/pmwiki.php/Main/AdaptationInducedPlothole