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[[quoteright:250:[[VideoGame/MarioAndLuigiBowsersInsideStory http://static.tvtropes.org/pmwiki/pub/images/SweetsbasketMovedToTheRight_6774.jpg]]]]
[[caption-width-right:250:Luigi's years of hard [[VideoGame/MarioParty partying]] finally caught up with him.]]

* Creator/DataEast's ''Diet Go Go'' has food-based enemies that throw food at our exercise outfit-clad hero and heroine. One hit with projectile food makes you fat, two makes you obese, leading to instant death. Averted if the enemies touch you directly, which is also instant death. To boot, the entire game's premise is about an evil scientist who's spreading junk food around the world, making people obese.
* ''VideoGame/FatPrincess'' is a downloadable real time strategy/action hybrid that has this as a strategic element. Fattening the princess up will make it harder for the opposing army to move her. Seriously.
** The game received criticism on its announcement, as people thought it was mocking the obese.
* VideoGame/{{Karnov}}'s [[http://www.youtube.com/watch?v=aVxpFZurSCs balloooooooooon]] attack in ''VideoGame/FightersHistory''.
* The Kooma Panda, Hebby Repp, Sudo Neku, and Toximander dream eaters in ''VideoGame/KingdomHearts3D'' get a brief case of this whenever you feed them one of the various oversized portions of RareCandy. Evidently, their HyperactiveMetabolism doesn't kick in instantly like it does for the rest of the dream eaters.
* BigEater Li Xiangfei gained a huge balloon belly in [[https://www.youtube.com/watch?v=VG1cJu1btQs her team's ending]] for ''VideoGame/TheKingOfFighters 2001''. Rather surprising since it was averted in the similar ending for ''The King of Fighters '99''. It seems the artist in charge for 2001, Nona (known for drawing {{Gonk}} versions of every character), has no problem subverting the BeautyIsNeverTarnished trope.
* Though it's hard to tell thanks to his anatomy (or lack thereof), ''Franchise/{{Kirby}}'' presents an especially absurd example. His size quite literally ''doubles'' when he inhales an enemy. (However, it swiftly returns to normal once he decides to swallow.)
** King Dedede is prone to this, too. When he swallows Kirby, his belly gets so big it forces his head all the way back until he spits him out. He also displays it if you let him beat you in Gourmet Race.
** All doubt is removed in the Wii installment, in which Kirby's belly wiggle is lovingly animated.
* ''VideoGame/TheLostVikings'' includes an air pump which balloonizes the three characters and make them float.
* Nabnut the squirrel gets so bloated that he cannot move after eating too many acorns in ''VideoGame/BanjoKazooie''.
* In ''[[VideoGame/MarioAndLuigiBowsersInsideStory Mario & Luigi: Bowser's Inside Story]]'', one of the Mario brothers' attacks, Snack Basket, involves stuffing Luigi with treats until he balloons up, followed by Mario tossing him at the ground to create a shock wave, as depicted on this page's image.
** Also in ''Bowser's Inside Story'' is [[http://www.youtube.com/watch?v=43O59LqAhzM&feature=related this]] little plot point. Guess all those fat jokes turned true, Bowser.
** Come to think of it, ''[[VideoGame/MarioAndLuigiSuperstarSaga Superstar Saga]]'' often did it with water or Chuckola Cola.
* In the ''VideoGame/MetalSlug'' game series, if you collect enough dropped food items, you transform into an obese version of yourself. This affects not only your movement, but also your attacks: They're all increased in size and power, and the homing missiles home in on enemies better. It also changes your standing melee attack into a fork stab and crouching melee attack into a belt whip.
** [[GratuitousEnglish "UH-OH, BIG!"]]
* The [[EverythingsBetterWithMonkeys Congalala]] in the ''VideoGame/MonsterHunter'' series uses this defensively, puffing out its stomach to deflect your attacks (Which may also trigger [[{{Fartillery}} a retaliatory fart]] if you keep hitting it there).
** The [[ThreateningShark Zamtrios]] uses this offensively, puffing out its belly if it manages to swallow you, afterwhich it'll start hitting it against the ground to cause damage to you and anyone else in the vicinity. Further, if you provoke it by breaking its ice armor, it'll temporarily inflate itself to point of looking more like a BlobMonster then a shark, switching to bouncing and rolling attacks instead of its usual biting and clawing as long as it remains in that state.
* In the ''Anime/OsomatsuSan'' video game ''Hesokuri Wars'', [[http://hanaxsan.tumblr.com/post/154387990886/ichimatsu-christmas-ichimatsu-as-santa-rides this happens to]] Christmas Ichimatsu after eating way too much cake ([[VomitIndiscretionShot results]] are rather {{Squick}}y).
* Hilde from ''VideoGame/ShadowHeartsFromTheNewWorld'' has two forms. Curvy Hilde is the trope. Slim Hilde is the opposite. Oddly enough, she gains ''and'' loses weight via feeding (she drinks calories, not blood--some enemies have "negative" calories).
* This happens to Sims in ''VideoGame/TheSims2'', in both directions: Immediately after getting up from a meal or getting off the treadmill, they may balloon to tubbyness or shrink to svelteness with a cheery sound effect. Contrast with ''VideoGame/TheSims3'', where fat and muscle are tracked separately, and gained or lost at a gradual rate.
* In ''VideoGame/StreetFighter'', Dhalsim gets this just before [[BreathWeapon breathing fire]].
* Wario in the "Super Smash Brothers Brawl" [[http://www.youtube.com/watch?v=6WBFw-wLQr4 Trailer]]
** He also [[GassHole gains one]] over time during fights.
** In fact, this happened to Wario in [[VideoGame/WarioLand most games]] [[VideoGame/WarioWorld that feature him]]. For example, in ''Wario Land 3'', eating a single donut would cause him to balloon to sumo proportions, which would then be useful for crushing weight-related blocks.
** ''VideoGame/WarioWare DIY Showcase'' takes this UpToEleven, as one of the minigames has Wario's belly inflating to deflect rockets. Yes, you read that right.
* In ''[[VideoGame/{{Scribblenauts}} Super Scribblenauts]]'', fattening foods will turn anyone who eats them ''instantly'' into "Fat", "Chubby", and "Obese" versions of themselves, which involves simply stretching the body portion of the sprite to be wider. Using a potion with one of those adjectives will achieve the same effect.
* During the Arizona chapter of the fourth ''VideoGame/TengaiMakyou'' game, a cinematic shows an obese cowboy sneaking into a woman's room and force-feeding her cookies that cause her to instantly fatten up. ItMakesSenseInContext (though not much, since the ''Tengai Makyou'' series is full of [[WidgetSeries very Japanese humor]]).
* This happened in ''VideoGame/UmJammerLammy'' after the title character gets free pizza after putting out a fire at a pizza shop. She gorges herself so much that she looks pregnant, but she just as quickly digests it.
* The Pakkun Lizards in the ''VideoGame/WorldOfMana'' games typically get a case of this if they succeed in catching someone with [[SwallowedWhole their signature move]], thanks to them being diminutive in size compared to their victims. It's a case of tactical suicide, as they can't move or fight back while in this state, leaving them at your mercy (Plus the devoured character only takes damage when spat out, if at all).
* ''Yume Penguin Monogatari'' ("Dream Penguin Story"), a Creator/{{Konami}} PlatformGame where you play a penguin trying to lose weight to impress his girlfriend. Falling in water will instantly make you as fat as you can get, and all the enemies throw food at you which will quickly fatten you up. One level is set in a giant cake. A [[DigitalPiracyIsEvil piracy check]], when failed, will cause you to instantly bulk up as soon as you're hit.
* [[http://images1.wikia.nocookie.net/__cb20100514003413/megamitensei/images/0/02/Tzitzimitl.png Tzitzimitl]], from ''Franchise/ShinMegamiTensei'', or at least her appearance in ''Videogame/{{Persona 4}}'', has a subtle one of these. As her Compendium lore states, she's swollen-bellied because she eats ''stars''.
* Any time [[{{Franchise/Super Mario Bros}} Petey Piranha]] appears in a game where the player [[{{ElementalPowers}} uses]] [[{{WeaksauceWeakness}} water]] [[{{VideoGame/SuperPrincessPeach}} as a]] [[{{VideoGame/SuperMarioSunshine}} weapon]] you can guarantee you'll have to utilize his ballooniness to inflate him until his [[{{AttackItsWeakPoint}} belly button]] pops out, allowing you to ground pound it.
* In ''VideoGame/SidAndAlsIncredibleToons'', Chow-Man's torso turns spherical after eating food that happens to fall into his tray. He quickly deflates as he walks it off on his treadmill.
* In the original ''VideoGame/KillerInstinct'', Riptor has a [[{{Fatality}} "No Mercy"]] finisher that combines this trope with ToServeMan: [[https://www.youtube.com/watch?v=I2vlL5ehjQc After the correct button code is input]], she screeches and makes a diving kick at her victim, then there is a FadeToBlack GoryDiscretionShot. The scene then returns to display Riptor laying on her back, cradling an enormously distended belly. She burps loudly, farts once, and then immediately returns to her normal figure to make a triumphant roar.
* It's never shown but during the Miss Tenku contest DLC in ''VideoGame/SuperRobotWarsV'', [[Anime/CrossAnge Salia]] states that [[HardDrinkingPartyGirl Ma]][[LightNovel/FullMetalPanic o]] apparently drinks so much at night that she gets this. It's not out-of-character for [[GreenEyedMonster Salia]] to exaggerate about something like this when she's talking trash in a contest, but Mao's reaction seems to indicate that it's true.
-->'''Mao:''' You truly are pathetic. Could it be all the stress of the captain role you don't deserve?
-->'''Salia:''' I may be stressed, but that's better then you, drinking away your cares every night until you've got the figure of a beer keg!
-->'''Mao:''' [[LetsGetDangerous Now you've said it, kiddie!]]
-->'''Salia:''' [[JerkassHasAPoint You started it!]]
** Even funnier when you realize that Salia is taking to another character who's seiyu also voices her former captain Zola Axeberg.
* In Spooky's Jump Scare Mansion, [[StringyHairedGhostGirl Specimen 4]] develops one after [[ToServeMan eating the player]] in her kill screen.
* In Overwatch, [[FatBastard Roadhog]]'s stomach inflates greatly whenever he inhales from his [[FantasticDrug Hogdrogen gas]] can via his ''Take a Breather'' ability.
* ''UsefulNotes/GameAndWatch'': In ''Chef'' you control a chef who juggles food with a frying pan. If one hits the ground, it gets eaten by a mouse who becomes larger upon eating it. Misses are also represented by fat mice.