[[RumbleRoses http://tvtropes.org/pmwiki/pub/images/929261_20060328_screen001.jpg]]
[[caption-width:1024:[-Take a wild guess where the graphics power went.-] ]]

A lot of breakthroughs have been made in making 3D animated scenes realistic, from lighting effects, to cloth modeling, to wind, water, hair movement, and relevant to this trope, soft body physics simulation of flesh and muscles. The one that [[EverybodyRemembersTheStripper stands out]] in the [[MostGamersAreMale minds of gamers]] is the programming breakthrough that gives female characters' anatomy real-time bounce. This is entirely intentional.

It becomes vaguely disturbing to think that such a small ([[MostCommonSuperpower or not so small]]) thing probably required a team of programmers weeks of hard work to figure out.

Common in tournament-style {{Fighting Game}}s, and {{Third Person Shooter}}s featuring a ThirdPersonSeductress.

Note that although most of the time JigglePhysics usually refers to breast JigglePhysics, this trope is also about, say, ass JigglePhysics. Or [[{{Squick}} fat]] JigglePhysics. Or [[BrainBleach male boob]] JigglePhysics. (Perhaps now you understand why this term usually only refers to boobs.)

!!Examples:

* In the recently released ''ResidentEvil 5'', Excella jiggles. [[spoiler:This is rather disturbing at one part as she is on all fours gasping in pain as her cells get ready to turn into giant leech-slugs.]]
* Seen in ''DragonQuestVIII'' with the character Jessica. She has enormous boobs, which jiggle and bounce, several different character models of her in skimpy clothing, and even a skill set called "Sex Appeal".
** Lampshaded in the game, when her mother chastises her for her choice of revealing traveling apparel.
* The ''DeadOrAlive'' series is known for having it, playing with it, and selling the game with it. An age input on the first title actually determined how much the female fighters could bounce. A later SpinOff would bring it further to the forefront by transforming the game into a beach volleyball title and eliminating the male competitors.
** Essentially this is one of Tomonobu Itagaki's defining traits of his games and is also highly prevalent in NinjaGaiden.
**[[http://www.ctrlaltdel-online.com/comic.php?d=20061025 Logic rears its ugly head?]]
**[[http://www.megatokyo.com/index.php?strip_id=626 They want to be free!]]
**Ultimate proof: [[http://www.gametrailers.com/player/14281.html Consider this series of animations]] from Dead or Alive Xtreme 2. [[CompletelyMissingThePoint Pity there isn't any gameplay preview, though.]]
*** Even while standing still they tend to bounce. I guess the normal laws of physics weren't sexy enough?
*** Oh dear God...DOA Xtreme 2...reviewers said it made them SEASICK.
** The way those things bounce around throws this right into UncannyValley territory for me
*** Uncanny Valley pertains to being almost but not quite human. Considering how unrealistic the bounce is, it's more like Valley of the WTF.
** [[MemeticMutation They're filled with Antigravity Water]]!
* ''{{BloodRayne}}'' has it, and even has a cheat code to enable ''increased'' boob bouncing. The cheat code is ''Juggy Dance Squad''.
* ''RumbleRoses'', the all-woman pro-wrestling title, of course.
** Although, they move as much as breasts in bras should move, not freely.
***Do multiple dashes (double taps on the control pad) and then try saying that with a straight face again.
* {{SNK}} may have been the first to do it, but in 2D: Mai Shiranui from ''FatalFury'' was bouncing long before the DOA girls.
* The ''SoulCalibur'' series displays this, but it is very much downplayed and almost, dare say, "realistic." The lone exception is the ninja Taki, whose breast movements, while they don't bounce ''too'' much, appear to be timed one full second behind the rest of her body.
** Xianghua, though, has buttock jiggle physics.
*** So does Talim, and maybe others.
** Disturbingly enough, ''Astaroth'' has a chest that jiggles noticeably whenever his onscreen model moves quickly enough. Eeewww....
*** Even more disturbing, [[NightmareFuel Voldo's ass]] jiggles in ''Soul Calibur 2''. Feel free to [[BrainBleach introduce your mind's eye to a knife]].
** Of course this was all thrown out in ''SoulCalibur 3'', in which all female character with the exception of the underaged Talim have been given larger breasts and costumes that allow these to bounce around in a ridiculous manner, such as when you SELECT them in the character selection bit. Astaroth's chest jiggle is still intact.
**Just a hint, in ''SoulCalibur III'', if you leave the shop while one of the storekeepers is gesturing, their boobs jiggle up at a ridiculous height, and then go back to normal. (I like the item-shop lady ;) )
***Try hitting the exit button (Triangle or Square) multiple times to "attempt" to exit.
**If SoulCalibur III is bad, the latest game in the series, Soulcalibur IV, [[http://www.gamesradar.com/video/v-20080804102923795039 is even worse.]] Seriously, not even the two underage girls, Talim and Amy, are exempt...
* The game ''VampireTheMasqueradeBloodlines'' has numerous female models for the player to control, depending on what type of vampire she (or, more likely, he) chooses. Oddly, only some of these have jiggle physics - others appear to have breasts made of solid metal.
**This makes sense, once you consider that the game is set in L.A.
** And that some of those characters have very tight dresses/tops, whereas others([[FetishFuel Malkavian]]) are more like a loose band of cloth.
* ''MetalGearAcid 2'' had exceptionally hilarious and out-of-place JigglePhysics for two main reasons - first of all, that it was a non-canon {{Spinoff}} of the ''MetalGearSolid'' series which tended to treat breasts with the respect they deserved (i.e. jiggling realistically, subliminally and not in their own antigravity fields), and second of all that the game came with a pair of 3D goggles allowing you to see the breasts' undulatory movements in gropeable solidarity. This editor is a straight female, so is biased, but distinctly remembers feeling physically ''seasick'' at the constant, rhythmic, three-dimensional lurching of Dr. Takiyama's chest.
** To save time, the developers used the same physics set on the [[RummageSaleReject ludicrous ammo pouch]] Snake wore on his own chest. The effect was...well.
** Not to mention that Venus, when, getting bored or some else, would hop up and down. ''WHY, [[HelloNurse HELLO, THERE]].''
** When a new area or section of a cutscene loaded up, everyone's breasts/ammo pouches would simultaneously, spontaniously boing up and down. It's hysterical.
* For some really, really well-done JigglePhysics, look at EVA from ''MetalGearSolid 3''. Unless you're paying attention, you won't notice - her breasts move exactly like a real person's. Particularly of note is the scene where, clad in her underwear, she crawls hands and knees towards Snake as part of an attempted seduction, and her breasts actually change shape - again, exactly like a real person's. The irony kicks in when it turns out that the woman has had bust enhancement surgery, which, using the techniques from the timeline she's in, would leave her rock solid.
** Those Philosophers really know their stuff apparently.
* ''MetalGearSolid 4'' takes this to its logical conclusion with ''interactive'' jiggle physics. Shaking the motion-sensitive controller while communicating with a female support character or fighting a female boss outside of her suit causes their breasts to bounce.
** Let it never be said that Kojima doesn't understand his audience.
* The latest of the ''TombRaider'' games have it, as would seem obvious. The early games show exactly what is wrong with its absence; Lara's chest is literally Barbie-esque in its steely inflexibility, as if she were smuggling a pair of cannonballs in her bodysuit.
* The Crystal Dynamics ''TombRaider'' games have this. It was only in the cutscenes for ''Legend'' and ''Anniversary''; ''Underworld'' has it in the gameplay itself. It's very subtle, but it is there.
* Several cutscenes from ''[[JamesBond 007: Agent Under Fire]]'' featured a lot of breast jiggling.
* ''NinjaGaiden Sigma'' features the female demon-hunter, Rachel, who fights the hordes of hell armed with a ludicrously {{Stripperiffic}} black leather outfit, a huge poleaxe and boobs that are just about big enough to each contain their own anti-gravity generator. In High Definition.
** Particularly odd (and hilarious) is one scene where Rachel is knocked out by a powerful enemy. A few seconds after she hits the ground, the camera pans to her still body, and her breasts are still shaking side to side.
** Considering it's by the same company that does ''{{Dead or Alive}}'', it would be more surprising if they ''didn't'' borrow some effects.
** The sequel has Rachel return, and this time around, you can force her breasts to jiggle [[http://www.destructoid.com/ninja-gaiden-sigma-2-features-sixaxis-controlled-breasts-147413.phtml by shaking your controller.]]
* In ''FinalFantasyX'', busty gothic lolita-styled mage Lulu had breasts that moved as if they were filled with water. If you ended a battle with her hasted, they appeared to jump like a prodded frog.
* In ''FinalFantasyXII'', Fran's buttocks do this at several points, most notably when she walks away from other Viera in Eryut Village.
* There are a few cutscenes where Tifa does this in ''FinalFantasyVII''. Justified example - Tifa's infamous knockers were caused by rendering limitations on the {{Playstation}}. The original character was supposed to have average-sized breasts (as seen in concept art), but when the graphics programmers realized the issues at hand, it boiled down to GagBoobs or {{Pettanko}}. The team chose the former.
* The adventure game ''{{Policenauts}}'' was quite interesting in that it named a 'Breast Jiggle Supervision Unit' in the credits. Every member of the unit was female.
* Ironically, the Bioware RPG game ''NeverwinterNights'' had only a single character model with jiggle physics - a female wearing a bare-shouldered BreastPlate. The armour was solid, but apparently the breasts behind it weren't attached to the woman, ''or'' snug against the armour. When fan-content added jiggle physics to other character models, even the most rigid steel full plate armour jiggled like a jelly castle.
* Was pretty much the point of the ''{{Playboy}}'' game, which was basically ''TheSims'' mixed with ''ThemePark'' mixed with... Playboy. You get to have sex with a lot of girls. [[AmateurPhotographer And take pictures of them]].
* "Bob" in the ''FightClub'' video game. He has an estrogen imbalance from taking steroids; as the narrator of the film puts it: "This is Bob. Bob has bitch tits."
* Judy Nails, in the [=XBox 360=], [=PC=] and [=PS3=] versions of ''GuitarHero III: Legends of Rock''. (She's relatively flat-chested in the [=PS2=] and Wii versions - well, not quite, but at least she certainly isn't springy...)
* In ''{{Haunting Ground}}'', whenever Fiona so much as stops ''walking'' her breasts give a celebratory boing.
* Averted in ''{{Drakengard}}''. This editor can't remember a single female character in that game who had anything above a B-cup. Of course, there are only three major females, one of which is a [[CreepyChild child]], so maybe that's to be expected.
* In ''DevilMayCry 4'', Trish's [[spoiler: and thus, Gloria's]] bust alternates between jiggling and producing a particularly strange wave effect.
** Lady, in her two appearances in the same game, was no different. Interestingly, Kyrie, who is characterised as more 'pure' than the others, apparently wears a bra [[strike:with better support]].
* Adrianna, the female player character in ''BaldursGate: Dark Alliance'', features some pretty impressive bouncing - even while armored - but is overshadowed a bit by Alyth the bartender (in typical barmaid garb), who leans forward most helpfully while she discusses your quest.
* 3D-rendered movie example: ''Film/{{Beowulf}}''. Particularity the table-scrubbing scene near the beginning.
* In ''TalesOfTheAbyss'', if you pay attention, you can see Tear´s breasts jiggle a bit in some game sequences, which supports the fact that the other characters see her as being well endowed.
** Sheena in ''TalesOfSymphonia'' has a bit of bounce to her bust as well, if you pay attention and look closely enough.
* Judith from ''TalesOfVesperia'' also has this.
** Then there's her Mystic Arte from the [[http://www.youtube.com/watch?v=7Zy8LUZ1kzM PS3 version]]
* [[strike:Even]] Naturally, ''{{Bleach}}'' games can't escape this trope, as seen with Orihime in ''Shattered Blade''.
**It's not just Orihime, almost all female characters have some degree of bounce, even the more flat chested ones.
**This even exists in the DS fighting games. On characters about the size of a ''house key''. They don't call him ''[[FanNickname Titty]]'' Kubo for nothing...
* Surprisingly, ''GuildWars'' has jiggle physics, it's just somewhat more realistic than pretty much all of the above examples and surprisingly missable. Different armor sets will offer better levels of support. That said, party hero Livia's, ahem, ''physics'' are decidedly noticeable in one infamous cutscene in ''Eye of the North''. This was probably the first time that most players actually ''realized'' that there were jiggle physics in the game. The rest probably rolled female elementalists on their first day.
**It's only ''really'' noticable during the female elementalist dance, or when a female ranger fires her bow. Not counting Livia, of course.
* In ''[[SonicTheHedgehog Sonic]] [[SonicAdventureSeries Adventure 2]]'', Rouge the Bat seemed to have no support for that wave action there. It wasn't even realistic.
** Averted in the next 3D games to feature her. [[YourMileageMayVary Your Mileage May Vary]], depending on whether or not [[FurryFandom you miss it]].
* In a non-video game example, the manufacturers of the "Shock Absorber" jog bra have a (NSFW) [[http://www.shockabsorber.co.uk/bounceometer/shock.html Flash-based 3D bounce simulator]], tunable by breast size and level of activity. The jiggling becomes hypnotic after a while.
* Jenny and Uranus (and to a lesser extent, Shina and Alice) from ''BloodyRoar: Primal Fury'' all have a considerable amount of bounce to the pixellated ounce.
* The NPC Nao of ''Mabinogi'' has very large breasts that are arguably the most mobile parts of her body.
* If your character in ''FinalFantasyCrystalChronicles'' is a Selkie female, you're going to experience a lot of this. It's not very noticeable at all once you're running around in-game, but as soon as you highlight her on the character selection screen... it's bamboozling. It's also worth mentioning that Selkies show up more often as females than males (including on the game's cover). Probably because they're {{Stripperiffic}} to boot.
** I think it's supposed to be the fur on her clothes.
*** No, it's her chest for sure. I ({{Dark}}) have been replaying the game with a friend, and it is most certainly the chest that's bouncing, not just the fur. It's kinda creepy...aren't they supposed to be, like, 13 or something?
* Subtly lampshaded in ''BatenKaitos Origins.'' On Sagi's home island, the shop is tended to by a female shopkeeper who demonstrates this trope. Right across the street, you'll find an old man ogling her.
* Briefly parodied in [[http://www.creativeworlds.net/Gifs/SSBBRina.gif this]] ''SuperSmashBros'' fan-work, with Nidorina's ''ears.''
* [[http://www.youtube.com/watch?v=clgGbP4Ep7U Enough said]].
*In ''ResidentEvil 4'', Ashley's breasts do a bit of jiggling, but it's most noticeable while on the elevator. [[strike:Bizarrely]] Not surprisingly, they're bouncier in the US version than in the Japanese version.
* Seems to have been subverted in ''StreetFighter IV'', where the most jiggly anatomy on any of the characters is [[{{FanDisservice}} the big gut on the male fighter Rufus]].
** Oh, it's there for other characters. See the opening cutscene for Chun Li's rival battle with C. Viper.
* Honorable mention must go to ''SuperRobotWars'', which although, normally being a 2-D series, doesn't have actual physics, models the bountiful bouncing of so many of its female protagonists in Pilot cut-ins that it might as well.
** Even Latooni has her moments and she's like 14? Though hers is small-medium at best.
*** Mention must also go to the GaidenGame EndlessFrontier, where every female with the exception of Suzuka and Kyon (no, not [[HaruhiSuzumiya that]] one) bounces. And the only reason these two don't bounce is because they're so flat, you could swear they haven't gone through puberty yet.
* ''Spore''. Oh god... http://www.youtube.com/watch?v=qqYbqI3Zz6k&feature=fvw
* ''MagicalBattleArena'' includes Naga the White Serpent from ''{{Slayers}}''. Naturally, her [[GagBoobs infamous breasts]] jiggle even when you're not moving her.
* In ''{{Killer7}}'', the female members of The Handsome Men jiggle quite a bit during their intro poses. And the fat man does as well.
* Three variations in ''[[FateStayNight Fate/Unlimited Codes]]''. Most of the female characters are rather modestly dressed to begin with, but Rin's normal clothes skirt the boundary just enough for noticable movement (she's clearly wearing appropriate underwear). Rider, on the other hand, jiggles ''very'' noticably...which considering her outfit and general endowment, makes perfect sense. Then, there's Dark Sakura, who's breasts [[http://www.youtube.com/watch?v=IQ36ZDL6A9I&feature=related apparently have their own gravity]].
**Leysritt, Ilyasviel's [[AnAxeToGrind axe-wielding]] {{Ninja Maid}}, combines her [[BoobsOfSteel formidable endowment]] with a [[{{Meido}} maid uniform]] that would appear to be a recoloured Anna Miller's uniform.
*In the original RatchetAndClank game there are few female characters. One, however, is a green Xenomorph in Blackwater City. She has regular sized boobs which seem to be made of plastic, seeing as they don't move at all on her chest. However, there is a very child-unfriendly easter egg which allows you to, by doing sideflips in front of the alien, grow her boobs to a ridiculous size. During and after the transformation, they jiggle like there's no tommorow.
* Arin and, to a lesser extent, Cecilia in the Korean MMO golf game ''{{Pangya}}''. Interestingly, the amount (or at least the obviousness) of Arin's jiggle physics tends to vary depending on what outfit you have equipped--she seems to jiggle twice as much while wearing overalls as when she's wearing a two-piece bathing suit. Go figure.
* The PS2 game ''Rise of the Kasai'' (sequel to ''The Mark of Kri'') was a fairly serious game with brutal violence...and featured Tati, a {{stripperiffic}} heroine whose breasts bounced about a foot every time she stopped moving.
* The only reason Naughty Dog's character designers thought it was a good idea to include Papu Papu as a boss in the original ''CrashBandicoot'' was because the animators loved to animate jiggling fat.
* Every single female character / enemy in the ''{{Castlevania}}'' series, even if they're just a heap of pixels, has jiggling boobs.
* Mei-Fang of ''ArcanaHeart'' has BoobsOfSteel that jiggle when she's in her standing position and in her victory poses. Now, why a RobotGirl needs to jiggle is a question only her eccentric creator knows.
* ''{{Lineage}} 2'' Dark Elven females jiggle... a lot.
* Mocked by ''{{The Onion}}'': [[http://www.theonion.com/content/news_briefs/new_video_game_technology?utm_source=a-section "New Video Game Technology Finally Allows Rendering of Smaller Breasts."]]
* There's a GameMod or two that allows this for ''TheSims 2''.
** The [[http://www.youtube.com/watch?v=t9u1zMCos8w&feature=PlayList&p=E984C2220CBC5EC8&playnext=1&playnext_from=PL&index=17 official trailer]] for the game actually featured jiggle physics, as well as a number of other things that didn't make it to the retail version.
* Valve recently added 'jiggle bones' to their Source Engine. Guess what modders commonly use them for?
** Replacing [[TeamFortress The Scout's]] bat with [[GagPenis Thor the Giant Horse Dong of Death]]? [[http://www.youtube.com/watch?v=QFoWccK3GjM (NSFW.) ]]
*** Or making [[http://www.facepunch.com/showthread.php?t=816805 the scout's head use jiggle physics?]]
* Priestess Rao from ''{{Okami}}'', nicknamed "Busty Babe" by Issun.
* [[http://www.youtube.com/watch?v=9ojqxFGFBSs&fmt=18 SiN Episodes]]. Oh, [[http://www.youtube.com/watch?v=kNqk2nuyQLo hello Elexis]]. I guess Ritual wanted to make the most of their Havok physics license.
* ''WorldOfWarcraft'' has some noticeable JigglePhysics, most infamously displayed with the night elf female idle animation, but common to all females, even while wearing full plate armor. It also has jiggling ogre bellies, among other things, so Blizzard doesn't discriminate.
**Though if you look at orc, tauren, troll, and gnome females you'll notice their breasts don't jiggle at all. Undead ones do, but this is more FanDisservice than anything.
** If you pick up a specific quest you can get yourself an ogre costume. If you wear it and do the "/dance" emote ... One description just put it as "experience for yourself the awe and majesty of the ogre dance."
** The Ogre dance is, incidentally, based on [[http://www.youtube.com/watch?v=qgEVUWIwNLw Chris Farley's Chippendale dance]] from SaturdayNightLive.
* Many games from Japanese {{hentai}} game company "Illusion" are essentially [[IncrediblyLamePun stripped-down]] dating sims on a 3D engine that supports JigglePhysics and sex.
* [[ValkyriaChronicles Selvaria]]... just, Selvaria. For the most part it's not too terrible, but there are a few scenes where her breasts bounce around in ''different directions''. In one scene, where she falls to her knees in shock, it's particularly jarring.
* The {{DarkCloud}} games on PS2 have this as well, though only for a few characters; the genie Ruby, one of the party members in the first game, and a circus performer (and, presumably, any female who uses that model) in the sequel.
* Vanessa in ''PN 03'' has butt jiggle physics.
* The bartender in the Elfsong Tavern in ''[[BaldursGate Baldur's Gate]]'', according to my father, has UncannyValley jiggling boobs.
* One beautiful example of how not to do this- one 3D hentai movie that featured slow-mo managed not to apply the slow-mo to the jiggle physics. So you got the character suddenly slowing down to BulletTime, with her breasts wobbling around like jello. It was... informative.
* The old Sierra AdventureGame ''PoliceQuest'' has jiggling in the EGA version. That's right, a 160x160 pixel 16-color game has a very obvious (not to mention very weird) bounce on Marie's boobs and ass.
* Cleopatra in ''Dante's Inferno'' has noticeable JigglePhysics to her bare breasts. [[FanDisservice That are gigantic and spout mooks from their nipples]]. SoYeah.
* Added to SecondLife as an option in a popular 3rd party client. Like everything in SL, the amount of jiggle is hugely customizable.
* The unbelievably epic game B.C, which was sadly (Like put that noose in the corner to good use sad) cancelled involved Cavemen and Cavewomen fighting huge dinosaurs and leading their tribe to victory over the beasts. From what the trailer suggests, a special attack of our female heroes could well have been Jiggle Power.
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