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* ''Eye of Terror'', an early Franchise/Warhammer40000ExpandedUniverse novel, describes the [[HyperspaceIsAScaryPlace Warp]] as an eight-dimensional space, none of which are the four dimensions of our home universe (three spatial and one temporal). As such, in the Eye of Terror, where the Warp bleeds into normal space, eight dimensions are overlaid onto four dimensions to become twelve-dimensional mayhem, very nearly impossible to navigate.

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Alphabetizing example(s)


* The goddesses and other heavenly beings in ''Anime/AhMyGoddess'' are 10-dimensional entities (in the "string theory" sense), not that it comes up very often. This means that, ostensibly, Keiichi can only perceive and interact with three dimensions of his ten-dimensional love interest.



* In ''[[Literature/HaruhiSuzumiya The Melancholy Of Haruhi Suzumiya]]'', Mikuru Asahina describes TimeTravel as moving in a four-dimensional direction across a series of stills, as in an animation.



* The goddesses and other heavenly beings in ''Anime/AhMyGoddess'' are 10-dimensional entities (in the "string theory" sense), not that it comes up very often. This means that, ostensibly, Keiichi can only perceive and interact with three dimensions of his ten-dimensional love interest.



* The ''ComicBook/{{Superman}}'' villain Mxyzptlk's realm has always been referred to as "the Fifth Dimension," but is usually depicted just as a typically weird comic bookity alternate universe (usually as a cartoon-style {{Wackyland}}). Occasionally, though, a writer will explore the [[AnotherDimension implications of the name.]]
** In ''ComicBook/WhateverHappenedToTheManOfTomorrow'', Mzy's reveals his true, five-dimensional form. Comicbook/LoisLane struggles to describe it afterwards:
--->''It had height, length, breadth, and a couple of other things. [...] [[BrownNoteBeing Looking at it made my head hurt.]]''

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%%* More than one story from old anthology comics dipped into early {{Cosmic Horror|Genre}} with a story about an encounter with a fourth dimensional being. It appeared as an amorphous, floating blob that absorbed whatever living thing it touched, could phase through obstacles or barriers and randomly disappeared. A savvy character would explain to the AudienceSurrogate that it's like someone sticking their finger through a two-dimensional plane, only visible to natives as an indistinct shape capable of freely disappearing from their perception or bypassing their lower dimension barriers by moving around them from its perspective.%%This example has been commented out for not identifying the work from which it originates. Do not uncomment it without adding the work.
* The ''ComicBook/{{Superman}}'' villain Mxyzptlk's realm has always been referred to as "the Fifth Dimension," but is usually depicted just as a typically weird comic bookity alternate universe (usually as a cartoon-style {{Wackyland}}). Occasionally, though, a writer will explore the [[AnotherDimension the implications of the name.]]
name]].
** In ''ComicBook/WhateverHappenedToTheManOfTomorrow'', Mzy's Mzy reveals his true, five-dimensional form. Comicbook/LoisLane Lois Lane struggles to describe it afterwards:
--->''It had height, length, breadth, and a couple of other things. [...] ''[...]'' [[BrownNoteBeing Looking at it made my head hurt.]]''hurt]].''



* More than one story from old anthology comics dipped into early CosmicHorror with a story about an encounter with a fourth dimensional being. It appeared as an amorphous, floating blob that absorbed whatever living thing it touched, could phase through obstacles or barriers and randomly disappeared. A savvy character would explain to the AudienceSurrogate that it's like someone sticking their finger through a two-dimensional plane, only visible to natives as an indistinct shape capable of freely disappearing from their perception or bypassing their lower dimension barriers by moving around them from its perspective.



[[folder:Fanworks]]
* ''Fanfic/ChildOfTheStorm'': The Spirit of the Fallen Fortress, being a minor EldritchAbomination, enjoys playing with physics [[DomainHolder in its domain]]. When it [[DemonicPossession possesses]] [[spoiler: Hermione]] and unleashes her full [[RealityWarper reality-warping]] potential as [[spoiler: a wielder of Chaos Magic and an Omega Class space-manipulating mutant]] filtered through its own sadism, the result is the kind of fractal based physics warping that requires either multiple [=PhD=]s or some serious drugs to understand. Then it goes [[WorldGoneMad full]] [[AlienGeometries Escher]].
* In ''Fanfic/EquestriaAcrossTheMultiverse'', the Mane Six find themselves at an InnBetweenTheWorlds run by a Pinkie Pie from a universe where they [[AscendToAHigherPlaneOfExistence ascended into 10th dimensional beings]]. While she looks like an Alicorn EnergyBeing, Pinkie finds poking her feels like you're 'poking the universe' and her voice sounds like it's coming from everywhere at once, showing there's much more to her than that. Her true form turns out to be larger than a ''universe'' and even an EldritchAbomination can't fully comprehend it.

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[[folder:Fanworks]]
[[folder:Fan Works]]
* ''Fanfic/ChildOfTheStorm'': The Spirit of the Fallen Fortress, being a minor EldritchAbomination, enjoys playing with physics [[DomainHolder in its domain]]. When it [[DemonicPossession possesses]] [[spoiler: Hermione]] and unleashes her full [[RealityWarper reality-warping]] potential as [[spoiler: a wielder of Chaos Magic and an Omega Class space-manipulating mutant]] filtered through its own sadism, the result is the kind of fractal based fractal-based physics warping that requires either multiple [=PhD=]s or some serious drugs to understand. Then it goes [[WorldGoneMad full]] [[AlienGeometries Escher]].
* In ''Fanfic/EquestriaAcrossTheMultiverse'', the Mane Six find themselves at an InnBetweenTheWorlds run by a Pinkie Pie from a universe where they [[AscendToAHigherPlaneOfExistence ascended into 10th dimensional 10th-dimensional beings]]. While she looks like an Alicorn EnergyBeing, {{Energy Being|s}}, Pinkie finds poking her feels like you're 'poking the universe' and her voice sounds like it's coming from everywhere at once, showing there's much more to her than that. Her true form turns out to be larger than a ''universe'' and even an EldritchAbomination can't fully comprehend it.



* ''Film/{{Interstellar}}'' features unseen higher dimensional entities going through a lot of trouble to provide higher dimensional travel for humans on a dying earth. One scene in particular has these entities attempt to illustrate their perception of time by mapping the timeline of a specific point of space three dimensionally as a tesseract that can be navigated ana and kata.

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* ''Film/{{Interstellar}}'' features unseen higher dimensional higher-dimensional entities going through a lot of trouble to provide higher dimensional travel for humans on a dying earth. One scene in particular has these entities attempt to illustrate their perception of time by mapping the timeline of a specific point of space three dimensionally as a tesseract that can be navigated ana and kata.



* In ''[[Literature/{{Animorphs}} The Andalite Chronicles]]'' Elfangor explains [[SubspaceOrHyperspace Z-space travel]] in an AsYouKnow speech that includes a mention that normal space has ten dimensions. However, for most lifeforms only the first four (length, width, depth, time) are actually visible; the other six are curled up inside themselves in ridiculous fashion and can't be perceived.
* Creator/RobertAHeinlein:
** Forms the plot of the short story "Literature/AndHeBuiltACrookedHouse". An architect builds a house that is a series of connected cubes, designed to mimic the shape of an "unfolded" tesseract (a four-dimensional cube). The night before the architect and his friends are to visit the house, an earthquake hits. They arrive and enter, only to find that the house has collapsed back into a four-dimensional shape. They have a lot of difficulties trying to get around the unpredictable geometry of the house.
** ''Literature/TheNumberOfTheBeast'' features six-dimensional travel, enabled by pushing on a gyroscope in just the right way.
** A plot point in ''Literature/StrangerInAStrangeLand''. Michael Smith, a human born on Mars and raised by Martians, has the ability to send objects to an unknown fourth dimension that is "ninety degrees away from everything else". He disappears two government {{Mooks}} by sending them to this mysterious dimension. Later, when he establishes a new religion with a FreeLoveFuture as one of its central tenets, he uses as part of his show a little stunt in which he makes people's clothes disappear, sent to the fourth dimension.

to:

* In ''[[Literature/{{Animorphs}} The Andalite Chronicles]]'' Elfangor explains [[SubspaceOrHyperspace Z-space travel]] in an AsYouKnow speech that includes a mention that normal space has ten dimensions. However, for most lifeforms only the first four (length, width, depth, time) are actually visible; the other six are curled up inside themselves in ridiculous fashion and can't be perceived.
* Creator/RobertAHeinlein:
** Forms
This forms the plot of the short story "Literature/AndHeBuiltACrookedHouse". An architect builds a house that is a series of connected cubes, designed to mimic the shape of an "unfolded" tesseract (a four-dimensional cube). The night before the architect and his friends are to visit the house, an earthquake hits. They arrive and enter, only to find that the house has collapsed back into a four-dimensional shape. They have a lot of difficulties trying to get around the unpredictable geometry of the house.
** ''Literature/TheNumberOfTheBeast'' features six-dimensional travel, enabled by pushing on a gyroscope * ''Literature/{{Animorphs}}'': In ''The Andalite Chronicles'', Elfangor explains [[SubspaceOrHyperspace Z-space travel]] in just the right way.
** A plot point in ''Literature/StrangerInAStrangeLand''. Michael Smith, a human born on Mars and raised by Martians, has the ability to send objects to
an unknown fourth dimension AsYouKnow speech that is "ninety degrees away from everything else". He disappears two government {{Mooks}} by sending them to this mysterious dimension. Later, when he establishes includes a new religion with a FreeLoveFuture as one of its central tenets, he uses as part of his show a little stunt in which he makes people's clothes disappear, sent to mention that normal space has ten dimensions. However, for most lifeforms only the fourth dimension.first four (length, width, depth, time) are actually visible; the other six are curled up inside themselves in ridiculous fashion and can't be perceived.



* This is all over the Franchise/CthulhuMythos. Most of its famous monstrosities exists in many more dimensions than we humans can perceive, so what we do see are just limited projections of their true multidimensional forms onto the 3D "reality".
* This is how hyperspace works in Iain M. Banks' [[Literature/TheCulture Culture]] series. Realspace is surrounded by two layers of hyperspace, known as infraspace and ultraspace, one 'above' and another 'below'. These can be used not only to travel faster than light, but to move in four spatial dimensions, allowing hyperspace technology (such as scanners, teleporters, and weapons) to bypass normal three-dimensional barriers. Each hyperspace layer is also bounded by an 'energy grid', a region of infinite energy separating one universe from the next, which can also be weaponized in a process known as a hypergridintrusion, or 'Gridfire', essentially submerging a section of space into a bath of destructive energy comparable to the Big Bang.
* In ''Literature/{{Diaspora}}'' by Creator/GregEgan, the protagonists discover that subatomic particles actually contain portals to a five-dimensional universe -- whose subatomic particles contain portals to another three-dimensional universe, and so on.
* Discussed in the satirical novel ''Literature/{{Flatland}}''. A. Square is a regular guy who happens to be a square, living in a two-dimensional universe. He is visited by a sphere who preaches to him the Gospel of Three Dimensions. The square is scornful of the idea initially, but eventually the sphere convinces him. When the square talks excitedly of the possibility of a ''fourth'' dimension, the sphere immediately dismisses the idea as ridiculous.
** And in Spaceland, Creator/RudyRucker's homage to ''Flatland''

to:

* This is all over the Franchise/CthulhuMythos.''Franchise/CthulhuMythos''. Most of its famous monstrosities exists in many more dimensions than we humans can perceive, so what we do see are just limited projections of their true multidimensional forms onto the 3D "reality".
* This is how hyperspace works in Iain M. Banks' [[Literature/TheCulture Culture]] series.''Literature/TheCulture''. Realspace is surrounded by two layers of hyperspace, known as infraspace and ultraspace, one 'above' and another 'below'. These can be used not only to travel faster than light, but to move in four spatial dimensions, allowing hyperspace technology (such as scanners, teleporters, and weapons) to bypass normal three-dimensional barriers. Each hyperspace layer is also bounded by an 'energy grid', a region of infinite energy separating one universe from the next, which can also be weaponized in a process known as a hypergridintrusion, or 'Gridfire', essentially submerging a section of space into a bath of destructive energy comparable to the Big Bang.
* In ''Literature/{{Diaspora}}'' by Creator/GregEgan, ''Literature/{{Diaspora}}'', the protagonists discover that subatomic particles actually contain portals to a five-dimensional universe -- whose subatomic particles contain portals to another three-dimensional universe, and so on.
* ''Literature/{{Dragaera}}'': The {{Necromancer}} is a veteran DimensionalTraveler who understands death as merely a restriction on one's access to certain planes of existence. Her quarters in Castle Black are roughly the size of a closet in the conventional three dimensions, but she finds them quite spacious indeed.
*
Discussed in the satirical novel ''Literature/{{Flatland}}''. A. Square is a regular guy who happens to be a square, living in a two-dimensional universe. He is visited by a sphere who preaches to him the Gospel of Three Dimensions. The square is scornful of the idea initially, but eventually the sphere convinces him. When the square talks excitedly of the possibility of a ''fourth'' dimension, the sphere immediately dismisses the idea as ridiculous.
** And * "Literature/GimmicksThree": Welby and Shapur, both having demonic powers, have the ability to travel in Spaceland, Creator/RudyRucker's homage any dimension, and that includes time.
* ''Literature/HaruhiSuzumiya'': In ''The Melancholy of Haruhi Suzumiya'', Mikuru Asahina describes TimeTravel as moving in a four-dimensional direction across a series of stills, as in an animation.
* According
to ''Flatland''''Literature/MostlyHarmless'', the Whole Sort of General Mish-Mash is the sum total of everything that could exist and all the different ways one could look at it. So-called parallel universes (which are neither) are "slices" through the Whole Sort of General Mish-Mash in various dimensions -- and since they're not parallel, these slices intersect.



* Creator/GregEgan's ''Literature/{{Orthogonal}}'' trilogy [[http://www.gregegan.net/ORTHOGONAL/ORTHOGONAL.html#CONTENTS rewrites the laws of physics]] to create an internally-consistent universe where there really ''are'' four spatial dimensions, one of which is perceived by the protagonists as time. An (oversimplified) explanation for why time seems so different from space is that the protagonist's momentum through the dimension of time is so great that it's impossible to change trajectory without technological assistance.

to:

* Creator/GregEgan's ''Literature/TheNumberOfTheBeast'' features six-dimensional travel, enabled by pushing on a gyroscope in just the right way.
*
''Literature/{{Orthogonal}}'' trilogy [[http://www.gregegan.net/ORTHOGONAL/ORTHOGONAL.html#CONTENTS rewrites the laws of physics]] to create an internally-consistent internally consistent universe where there really ''are'' four spatial dimensions, one of which is perceived by the protagonists as time. An (oversimplified) explanation for why time seems so different from space is that the protagonist's momentum through the dimension of time is so great that it's impossible to change trajectory without technological assistance.



* Creator/HGWells' classic, ''Literature/TheTimeMachine'', is probably the TropeCodifier, as it is one of the first works to suggest this idea. The [[NoNameGiven unnamed]] protagonist constructs the eponymous TimeMachine, which allows him to jump forward in time, then return to his own time to tell the story of his adventure. Interestingly, while traveling through time, the machine doesn't travel through space, but eons of continental drift drops him somewhere else entirely from his starting point.
* The Creator/ArthurCClarke novelization of ''Film/TwoThousandOneASpaceOdyssey'' explicates that the Monolith has sides in a proportion of 1:4:9, the squares of the first three integers. Then it suggests the Monolith extends in more dimensions, presumably by squares.
--> "And how naive to have imagined that the series ended at this point, in only three dimensions!"
* A Franchise/StarTrekExpandedUniverse novel has Picard encountering a four-dimensional joint Borg/Romulan station in subspace. The station appears to have a typical cube shape, except, as Picard circles it, he counts ''five'' sides instead of four. His brain is having trouble processing the information, as humans have a hard time thinking in four dimensions.
* According to ''Literature/MostlyHarmless'', the Whole Sort of General Mish-Mash is the sum total of everything that could exist and all the different ways one could look at it. So-called parallel universes (which are neither) are "slices" through the Whole Sort of General Mish-Mash in various dimensions -- and since they're not parallel, these slices intersect.
* ''Literature/{{Dragaera}}'': The {{Necromancer}} is a veteran DimensionalTraveler who understands death as merely a restriction on one's access to certain planes of existence. Her quarters in Castle Black are roughly the size of a closet in the conventional three dimensions, but she finds them quite spacious indeed.
* Creator/IsaacAsimov's "Literature/GimmicksThree": Welby and Shapur, both having demonic powers, have the ability to travel in any dimension, and that includes time.
* Appears several times in the ''[[Literature/TheThreeBodyProblem Remembrance of Earth's Past]]''. Notably, the Sophon is a proton-sized quantum supercomputer the Trisolarans created by unfolding two of its dimensions to the width of a planet and etching Strong Force-based circuitry into it before compressing it back down. This is further expanded on in ''Death's End'', where the crew of a human spaceship come across a "fragment" of fourth-dimensional space. [[spoiler: This proves to be a dire warning, as the Solar System is later struck by a devastating alien weapon that collapses it into two-dimensional space. Guan Yifan speculates that the universe used to be made of 10 macro-dimensions, but billions of years of warfare between unimaginably advanced civilizations collapsed it down to 3 and lowered the speed of light. This is expected to continue until the universe is only one-dimensional, with the perpetrators engineering themselves to survive while they wipe out all possible rivals.]]

to:

* Creator/HGWells' classic, ''Literature/TheTimeMachine'', is probably the TropeCodifier, as it is one of the first works to suggest this idea. The [[NoNameGiven unnamed]] protagonist constructs the eponymous TimeMachine, which allows him to jump forward in time, then return to his own time to tell the story of his adventure. Interestingly, while traveling through time, the machine doesn't travel through space, but eons of continental drift drops him somewhere else entirely from his starting point.
* The Creator/ArthurCClarke novelization of ''Film/TwoThousandOneASpaceOdyssey'' explicates that the Monolith has sides in a proportion of 1:4:9, the squares of the first three integers. Then it suggests the Monolith extends in more dimensions, presumably by squares.
--> "And how naive to have imagined that the series ended at this point, in only three dimensions!"
* A Franchise/StarTrekExpandedUniverse novel has Picard encountering a four-dimensional joint Borg/Romulan station in subspace. The station appears to have a typical cube shape, except, as Picard circles it, he counts ''five'' sides instead of four. His brain is having trouble processing the information, as humans have a hard time thinking in four dimensions.
* According to ''Literature/MostlyHarmless'', the Whole Sort of General Mish-Mash is the sum total of everything that could exist and all the different ways one could look at it. So-called parallel universes (which are neither) are "slices" through the Whole Sort of General Mish-Mash in various dimensions -- and since they're not parallel, these slices intersect.
* ''Literature/{{Dragaera}}'': The {{Necromancer}} is a veteran DimensionalTraveler who understands death as merely a restriction on one's access to certain planes of existence. Her quarters in Castle Black are roughly the size of a closet in the conventional three dimensions, but she finds them quite spacious indeed.
* Creator/IsaacAsimov's "Literature/GimmicksThree": Welby and Shapur, both having demonic powers, have the ability to travel in any dimension, and that includes time.
* Appears several times in the ''[[Literature/TheThreeBodyProblem Remembrance of Earth's Past]]''.''Literature/RemembranceOfEarthsPast''. Notably, the Sophon is a proton-sized quantum supercomputer the Trisolarans created by unfolding two of its dimensions to the width of a planet and etching Strong Force-based circuitry into it before compressing it back down. This is further expanded on in ''Death's End'', where ''Literature/DeathsEnd'' when the crew of a human spaceship come across a "fragment" of fourth-dimensional space. [[spoiler: This [[spoiler:This proves to be a dire warning, as the Solar System is later struck by a devastating alien weapon that collapses it into two-dimensional space. Guan Yifan speculates that the universe used to be made of 10 macro-dimensions, but billions of years of warfare between unimaginably advanced civilizations collapsed it down to 3 and lowered the speed of light. This is expected to continue until the universe is only one-dimensional, with the perpetrators engineering themselves to survive while they wipe out all possible rivals.]]]]
* ''Literature/TheSpaceOdysseySeries'' explicates that the Monolith has sides in a proportion of 1:4:9, the squares of the first three integers. Then it suggests the Monolith extends in more dimensions, presumably by squares.
-->And how naive to have imagined that the series ended at this point, in only three dimensions!
* A ''Franchise/StarTrekExpandedUniverse'' novel has Picard encountering a four-dimensional joint Borg/Romulan station in subspace. The station appears to have a typical cube shape, except, as Picard circles it, he counts ''five'' sides instead of four. His brain is having trouble processing the information, as humans have a hard time thinking in four dimensions.



* In the ''Literature/XeeleeSequence'', the Xeelee trap the solar system inside a 4-dimensional hypercube to stop humanity from being [[HumansAreBastards a constant genocidal pain in their ass.]]

to:

* In This is a plot point in ''Literature/StrangerInAStrangeLand''. Michael Smith, a human born on Mars and raised by Martians, has the ''Literature/XeeleeSequence'', the Xeelee trap the solar system inside a 4-dimensional hypercube ability to stop humanity send objects to an unknown fourth dimension that is "ninety degrees away from being [[HumansAreBastards everything else". He disappears two government {{Mooks}} by sending them to this mysterious dimension. Later, when he establishes a constant genocidal pain new religion with a FreeLoveFuture as one of its central tenets, he uses as part of his show a little stunt in their ass.]]which he makes people's clothes disappear, sent to the fourth dimension.
* ''Literature/TheTimeMachine'' is probably the TropeCodifier, as it is one of the first works to suggest this idea. The [[NoNameGiven unnamed]] protagonist constructs the eponymous TimeMachine, which allows him to jump forward in time, then return to his own time to tell the story of his adventure. Interestingly, while traveling through time, the machine doesn't travel through space, but eons of continental drift drop him somewhere else entirely from his starting point.



* In the ''Literature/XeeleeSequence'', the Xeelee trap the solar system inside a 4-dimensional hypercube to stop humanity from being [[HumansAreBastards a constant genocidal pain in their ass]].



* ''Series/DoctorWho'': Discussed briefly in the very first episode, [[Recap/DoctorWhoS1E1AnUnearthlyChild "An Unearthly Child"]], demonstrating how strange Susan Foreman is. Worth noting that she's supposedly a [[AdorablyPrecociousChild 15-year-old girl]] at this point.

to:

* An episode of ''Series/BlackHoleHigh'' features a tesseract.
* ''Series/DoctorWho'': Discussed briefly in the very first episode, [[Recap/DoctorWhoS1E1AnUnearthlyChild "An "[[Recap/DoctorWhoS1E1AnUnearthlyChild An Unearthly Child"]], Child]]", demonstrating how strange Susan Foreman is. Worth It's worth noting that she's supposedly a [[AdorablyPrecociousChild 15-year-old girl]] at this point.



* An episode of ''Series/StrangeDaysAtBlakeHolseyHigh'' featured a tesseract.
* The first season opening narration of ''Series/TheTwilightZone1959'' starts as follows: "There is a fifth dimension beyond that which is known to man."
%% ** The series episode "Little Girl Lost" deals with a girl who falls through a portal to the fourth dimension that pops into existence next to her bed.

to:

* An episode of ''Series/StrangeDaysAtBlakeHolseyHigh'' featured a tesseract.
*
''Series/TheTwilightZone1959'':
**
The first season opening narration of ''Series/TheTwilightZone1959'' starts as follows: "There is a fifth dimension beyond that which is known to man."
%% ** The series episode "Little "[[Recap/TheTwilightZone1959S3E26LittleGirlLost Little Girl Lost" Lost]]" deals with a girl who falls through a portal to the fourth dimension that pops into existence next to her bed.



* ''{{Magazine/Analog}}'': The [[Recap/Analog1941 February 1941 issue]] has an interior image on page 69, part of Creator/RobertAHeinlein's "Literature/AndHeBuiltACrookedHouse". The image includes two three dimensional models of a hypercube, which is incorporated as part of the titular house's design. Another model of the house's design appears on page 72, and the house itself collapses into itself on page 75.

to:

* ''{{Magazine/Analog}}'': ''Magazine/{{Analog}}'': The [[Recap/Analog1941 February 1941 issue]] has an interior image on page 69, part of Creator/RobertAHeinlein's "Literature/AndHeBuiltACrookedHouse". The image includes two three dimensional models of a hypercube, which is incorporated as part of the titular house's design. Another model of the house's design appears on page 72, and the house itself collapses into itself on page 75.



* ''TabletopGame/DungeonsAndDragons'', using "BD&D Immortals" rules. InUniverse, there are five known spatial dimensions. The first three are the standard ones (length, width and depth). The fourth is [[SubspaceOrHyperspace hyperspace]] (AKA the "shortcut dimension") and is used for teleportation. The fifth is a [[EldritchLocation horrid alien space]] called the [[HyperspaceIsAScaryPlace Nightmare Dimension]]. It is possible for an Immortal to see into or even enter the 4th and 5th dimensions. There are creatures that exist in the 3rd-5th dimensions: we view them as monsters (and vice versa).
* ''TabletopGame/Gurps'': Powers:The Weird has rules for 4 dimensional beings and 4D martial arts.

to:

* ''TabletopGame/DungeonsAndDragons'', using "BD&D Immortals" rules. InUniverse, there are five known spatial dimensions. The first three are the standard ones (length, width and depth). The fourth is [[SubspaceOrHyperspace hyperspace]] (AKA (a.k.a. the "shortcut dimension") and is used for teleportation. The fifth is a [[EldritchLocation horrid alien space]] called the [[HyperspaceIsAScaryPlace Nightmare Dimension]]. It is possible for an Immortal to see into or even enter the 4th and 5th dimensions. There are creatures that exist in the 3rd-5th dimensions: we view them as monsters (and vice versa).
* ''TabletopGame/Gurps'': Powers:The Weird ''TabletopGame/{{GURPS}}: Powers'' has rules for 4 dimensional 4-dimensional beings and 4D martial arts.



* ''VideoGame/HalfLife2'': In a very arcane (and [[FreezeFrameBonus Blink And You Miss It]]) GeniusBonus, Dr. Judith Mossman quips about the resistance's superior, if somewhat [[FlawedPrototype unstable and homebrew]], ExtradimensionalShortcut technology. Link to Website/{{Wikipedia}} article on [[https://en.wikipedia.org/wiki/Calabi-Yau_manifold Calabi–Yau manifold]]:
--> "If the Combine only knew what we were doing with the Calabi-Yau model..."
** While this moment is easy to write off as mere {{Technobabble}}, [[https://en.wikipedia.org/wiki/Calabi-Yau_manifold Calabi-Yau manifolds]] are a type of N-dimensional shape/coordinate system/mathematical model with...[[AlienGeometries strange]]...properties deeply related to the shape of space, time, and the curled up dimensions found in string theory. See Website/TheOtherWiki's article for more details, but for our purposes a Calabi-Yau manifold can be summed up as "a map of the TimeyWimeyBall".
* ''VideoGame/{{Magic Cube 4D}}'' is a fourth dimensional variation of the Rubick's Cube.
* ''VideoGame/{{Miegakure}}'' is an in-development (as of December 2014) PuzzlePlatformer in which the player explores a world that has four dimensions, but only three are visible at any given time.
** In the sister franchise ''VideoGame/{{Portal}}'', there is a related ShoutOut to this same model in the swirling particles seen when the portal gun is fired: their paths trace out a simple 3d cross-section of a Calabi-Yau manifold. This would seem to imply that either Aperture Science independently stumbled across the same trick, or that the resistance has been attempting to reverse engineer their research based on incomplete notes.



* ''4D Toys'' is an early demo using the same engine that was designed for ''Miegakure''.



* ''4D Toys'' is an early demo using the same engine that was designed for ''Miegakure'', below.
* ''VideoGame/HalfLife2'': In a very arcane (and [[FreezeFrameBonus blink-and-you-miss-it]]) GeniusBonus, Dr. Judith Mossman quips about the resistance's superior, if somewhat [[FlawedPrototype unstable and homebrew]], ExtradimensionalShortcut technology. "If the Combine only knew what we were doing with the Calabi-Yau model..." While this moment is easy to write off as mere {{Technobabble}}, [[https://en.wikipedia.org/wiki/Calabi-Yau_manifold Calabi-Yau manifolds]] are a type of N-dimensional shape/coordinate system/mathematical model with... [[AlienGeometries strange]]... properties deeply related to the shape of space, time, and the curled-up dimensions found in string theory. See Website/{{Wikipedia}}'s article for more details, but for our purposes a Calabi-Yau manifold can be summed up as "a map of the TimeyWimeyBall".
* ''VideoGame/MagicCube4D'' is a fourth-dimensional variation of the Rubick's Cube.
* ''VideoGame/{{Miegakure}}'' is an in-development (as of December 2014) PuzzlePlatformer in which the player explores a world that has four dimensions, but only three are visible at any given time.
* In ''VideoGame/{{Portal}}'', the sister franchise to ''''VideoGame/HalfLife'', there is a related ShoutOut to this same model in the swirling particles seen when the portal gun is fired: their paths trace out a simple 3d cross-section of a [[https://en.wikipedia.org/wiki/Calabi-Yau_manifold Calabi-Yau manifold]]. This would seem to imply that either Aperture Science independently stumbled across the same trick, or that the resistance has been attempting to reverse engineer their research based on incomplete notes.



* In ''WebComic/GirlGenius'' the Castle Heterodyne discusses time as a thing with complex dimensions a human would have a very hard time visualizing while [[http://www.girlgeniusonline.com/comic.php?date=20140613 talking to Gil.]]
-->''Just...accept that time, like space, has its planes and angles. [-It is not really a perfect analogy but it will suffice.-] [...] I believe you would have difficulty visualizing the complex dimensions of ''time.''''
* In ''Webcomic/{{xkcd}}'' strip #721, Cueball visits Literature/{{Flatland}} and apologizes to A. Square for having given him a hard time when he had trouble understanding three-dimensional space. Playing ''VideoGame/{{Miegakure}}'' has made Cueball more sympathetic to Square's situation.

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* In ''WebComic/GirlGenius'' ''WebComic/GirlGenius'', the Castle Heterodyne discusses time as a thing with complex dimensions a human would have a very hard time visualizing while [[http://www.girlgeniusonline.com/comic.php?date=20140613 talking to Gil.]]
-->''Just...-->''"Just...accept that time, like space, has its planes and angles. [-It is not really a perfect analogy but it will suffice.-] [...] ''[...]'' I believe you would have difficulty visualizing the complex dimensions of ''time.''''
* In ''Webcomic/{{xkcd}}'' strip #721, Cueball visits Literature/{{Flatland}} and apologizes to A. Square for having given him a hard time when he had trouble understanding three-dimensional space. Playing ''VideoGame/{{Miegakure}}'' has made Cueball more sympathetic to Square's situation.
''"''



* In ''Webcomic/{{xkcd}}'' [[https://xkcd.com/721/ strip #721]], Cueball visits Literature/{{Flatland}} and apologizes to A. Square for having given him a hard time when he had trouble understanding three-dimensional space. Playing ''VideoGame/{{Miegakure}}'' has made Cueball more sympathetic to Square's situation.



* The ''WesternAnimation/AdventureTime'' episode "The Real You" centers on Finn gaining super-intelligence. He invents a bubble blower that can create two-dimensional bubbles with one-dimensional shadows, three-dimensional bubbles with two-dimensional shadows, and fourth-dimensional bubbles with three-dimensional shadows. That last one just existing [[RealityBreakingParadox creates a black hole]].
* ''WesternAnimation/TheSimpsons'' parodies this trope in "Treehouse of Horror VI", where Homer ends up in a seeming EldritchLocation... one that renders everything, including himself, in computer-generated 3D graphics. When people try to rescue Homer and figure out what happened to him, Dr. Frink explains that Homer is trapped in "the third dimension", something baffling to the people of the two-dimensional Springfield.
* Also parodied in ''WesternAnimation/AquaTeenHungerForce'', where the Mooninites claim to have 5000 dimensions, although Frylock points out that he only sees [[PaperPeople 2 (due to the titular aliens being old computer sprites)]].

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* The ''WesternAnimation/AdventureTime'' episode "The "[[Recap/AdventureTimeS2E15TheRealYou The Real You" You]]" centers on Finn gaining super-intelligence. He invents a bubble blower that can create two-dimensional bubbles with one-dimensional shadows, three-dimensional bubbles with two-dimensional shadows, and fourth-dimensional bubbles with three-dimensional shadows. That last one just existing [[RealityBreakingParadox creates a black hole]].
* Parodied in ''WesternAnimation/AquaTeenHungerForce'' when the Mooninites claim to have 5000 dimensions, although Frylock points out that he only sees [[PaperPeople 2 (due to the titular aliens being old computer sprites)]].
* ''WesternAnimation/TheSimpsons'' parodies this trope in "Treehouse "[[Recap/TheSimpsonsS7E6TreehouseOfHorrorVI Treehouse of Horror VI", where VI]]" when Homer ends up in a seeming EldritchLocation... one that renders everything, including himself, in computer-generated 3D graphics. When people try to rescue Homer and figure out what happened to him, Dr. Frink explains that Homer is trapped in "the third dimension", something baffling to the people of the two-dimensional Springfield.
* Also parodied in ''WesternAnimation/AquaTeenHungerForce'', where the Mooninites claim to have 5000 dimensions, although Frylock points out that he only sees [[PaperPeople 2 (due to the titular aliens being old computer sprites)]].
Springfield.
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* In the ''Literature/XeeleeSequence'', the Xeelee trap the solar system inside a 4-dimensional hypercube to stop humanity from being [[HumansAreBastards a constant genocidal pain in their ass.]]

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* ''VideoGame/{{Magic Cube 4D}}'' is a fourth dimensional variation of the Rubick's Cube.
* ''VideoGame/{{Miegakure}}'' is an in-development (as of December 2014) PuzzlePlatformer in which the player explores a world that has four dimensions, but only three are visible at any given time.



* ''VideoGame/{{Miegakure}}'' is an in-development (as of December 2014) PuzzlePlatformer in which the player explores a world that has four dimensions, but only three are visible at any given time.

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* ''VideoGame/{{Miegakure}}'' is an in-development (as 4D and above variations of December 2014) PuzzlePlatformer in which the player explores a world that has four dimensions, but only three are visible at any given time.''VideoGame/TwoThousandAndFortyEight'' can also be found online.



* ''VideoGame/{{Magic Cube 4D}}'' is a fourth dimensional variation of the Rubick's Cube.
* 4D and above variations of ''VideoGame/TwoThousandAndFortyEight'' can also be found online.

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* ''VideoGame/{{Magic Cube 4D}}'' ''4D Miner'''s entire concept is a fourth dimensional variation of based around this. The game is very similar to ''VideoGame/{{Minecraft}}'', but you can scroll the Rubick's Cube.
*
mouse wheel to shift your orientation in 4D and above variations of ''VideoGame/TwoThousandAndFortyEight'' can also be found online.space.
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* In ''[[LightNovel/HaruhiSuzumiya The Melancholy Of Haruhi Suzumiya]]'', Mikuru Asahina describes TimeTravel as moving in a four-dimensional direction across a series of stills, as in an animation.

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* In ''[[LightNovel/HaruhiSuzumiya ''[[Literature/HaruhiSuzumiya The Melancholy Of Haruhi Suzumiya]]'', Mikuru Asahina describes TimeTravel as moving in a four-dimensional direction across a series of stills, as in an animation.
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A popular idea in fiction that features TimeTravel is the idea that time is not really any different from space--for whatever reason, [[YouCannotGraspTheTrueForm we just can't perceive it]] as a spatial dimension or travel through it without [[TimeMachine technological assistance]]. Varying explanations are given for this.

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A popular idea in fiction that features TimeTravel is the idea that time is not really any different from space--for whatever reason, [[YouCannotGraspTheTrueForm we just can't perceive it]] or even [[TooStrangeToShow show it]] as a spatial dimension or travel through it without [[TimeMachine technological assistance]]. Varying explanations are given for this.
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* [[https://en.wikipedia.org/wiki/Anthropic_principle#Spacetime Research shows]] the 3 spatial dimensions + 1 temporal dimension of our Universe is the only one where life -and technology- as we know it could exist[[note]]{{Eldritch Abomination}}s aside, that is[[/note]]. Mess with the number of dimensions and either complex systems will be impossible or orbits, either planetary or the ones of electrons around an atomic nucleus, will be unstable-. Conversely mess with the number of time dimensions and watch how you either cannot predict the behavior of physical systems (meaning no way to develop technology) or protons and electrons, unless at temperatures low enough, go unstable.

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* [[https://en.wikipedia.org/wiki/Anthropic_principle#Spacetime Research shows]] the 3 spatial dimensions + 1 temporal dimension of our Universe is the only one where life -and technology- as we know it could exist[[note]]{{Eldritch Abomination}}s aside, that is[[/note]]. Mess with the number of dimensions and either complex systems will be impossible or orbits, either planetary or the ones of electrons around an atomic nucleus, will be unstable-.unstable. Conversely mess with the number of time dimensions and watch how you either cannot predict the behavior of physical systems (meaning no way to develop technology) or protons and electrons, unless at temperatures low enough, go unstable.
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* Tesseracts are featured heavily as a plot device in ''Series/{{Andromeda}}'' . Specifically as tools of the Abyss and also used to help Harper.

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* Tesseracts are featured heavily as a plot device in ''Series/{{Andromeda}}'' .''Series/{{Andromeda}}''. Specifically as tools of the Abyss and also used to help Harper.
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* In "A Victim of Higher Space" by Creator/AlgernonBlackwood, a man keeps accidentally falling into higher-dimensional space.

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* In the 1914 short story "A Victim of Higher Space" by Creator/AlgernonBlackwood, a man keeps accidentally falling into higher-dimensional space.
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* ''VideoGame/HalfLife2'': In a very arcane (and [[FreezeFrameBonus Blink And You Miss It]]) GeniusBonus, Dr. Judith Mossman quips about the resistance's superior, if somewhat [[FlawedPrototype unstable and homebrew]], ExtradimensionalShortcut technology. Link to Website/{{Wikipedia}} article on [[https://en.wikipedia.org/wiki/Calabi%E2%80%93Yau_manifold Calabi–Yau manifold]]:

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* ''VideoGame/HalfLife2'': In a very arcane (and [[FreezeFrameBonus Blink And You Miss It]]) GeniusBonus, Dr. Judith Mossman quips about the resistance's superior, if somewhat [[FlawedPrototype unstable and homebrew]], ExtradimensionalShortcut technology. Link to Website/{{Wikipedia}} article on [[https://en.wikipedia.org/wiki/Calabi%E2%80%93Yau_manifold org/wiki/Calabi-Yau_manifold Calabi–Yau manifold]]:
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* ''VideoGame/HalfLife2'': In a very arcane (and [[FreezeFrameBonus Blink And You Miss It]]) GeniusBonus, Dr. Judith Mossman quips about the resistance's superior, if somewhat [[FlawedPrototype unstable and homebrew]], ExtradimensionalShortcut technology. Link to Wiki/{{Wikipedia}} article on [[https://en.wikipedia.org/wiki/Calabi%E2%80%93Yau_manifold Calabi–Yau manifold]]:

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* ''VideoGame/HalfLife2'': In a very arcane (and [[FreezeFrameBonus Blink And You Miss It]]) GeniusBonus, Dr. Judith Mossman quips about the resistance's superior, if somewhat [[FlawedPrototype unstable and homebrew]], ExtradimensionalShortcut technology. Link to Wiki/{{Wikipedia}} Website/{{Wikipedia}} article on [[https://en.wikipedia.org/wiki/Calabi%E2%80%93Yau_manifold Calabi–Yau manifold]]:
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Wiki/ namespace cleaning.


** While this moment is easy to write off as mere {{Technobabble}}, [[https://en.wikipedia.org/wiki/Calabi-Yau_manifold Calabi-Yau manifolds]] are a type of N-dimensional shape/coordinate system/mathematical model with...[[AlienGeometries strange]]...properties deeply related to the shape of space, time, and the curled up dimensions found in string theory. See Wiki/TheOtherWiki's article for more details, but for our purposes a Calabi-Yau manifold can be summed up as "a map of the TimeyWimeyBall".

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** While this moment is easy to write off as mere {{Technobabble}}, [[https://en.wikipedia.org/wiki/Calabi-Yau_manifold Calabi-Yau manifolds]] are a type of N-dimensional shape/coordinate system/mathematical model with...[[AlienGeometries strange]]...properties deeply related to the shape of space, time, and the curled up dimensions found in string theory. See Wiki/TheOtherWiki's Website/TheOtherWiki's article for more details, but for our purposes a Calabi-Yau manifold can be summed up as "a map of the TimeyWimeyBall".
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* More than one story from old anthology comics dipped into early CosmicHorror with a story about an encounter with a fourth dimensional being. It appeared as an amorphous, floating blob that absorbed whatever living thing it touched, could phase through obstacles or barriers and randomly disappeared. A savvy character would explain to the AudienceSurrogate that it's like someone sticking their finger through a two-dimensional plane, only visible to natives as an indistinct shape capable of freely disappearing from their perception or bypassing their lower dimension barriers by moving around them from its perspective.

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* In ''ComicBook/WhateverHappenedToTheManOfTomorrow'', Mxyzptlk, an inhabitant of the Fifth Dimension, reveals his true form. Comicbook/LoisLane struggles to describe it afterwards:
--> It had height, length, breadth, and a couple of other things. [...] Looking at it made my head hurt.
** Mxy's realm has always been referred to as "the Fifth Dimension," but is usually depicted just as a typically weird comic bookity alternate universe (usually as a cartoon-style {{Wackyland}}). Occasionally, though, a writer will explore the [[AnotherDimension implications of the name.]] One time, Superman has to rescue one of Mxy's people from a [[AlwaysABiggerFish cosmic threat]] that is reducing him to only three dimensions. The entity attacks Superman, stripping away one of his dimensions and briefly turning him into a flat, two-dimensional image.

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* In ''ComicBook/WhateverHappenedToTheManOfTomorrow'', Mxyzptlk, an inhabitant of the Fifth Dimension, reveals his true form. Comicbook/LoisLane struggles to describe it afterwards:
--> It had height, length, breadth, and a couple of other things. [...] Looking at it made my head hurt.
** Mxy's
The ''ComicBook/{{Superman}}'' villain Mxyzptlk's realm has always been referred to as "the Fifth Dimension," but is usually depicted just as a typically weird comic bookity alternate universe (usually as a cartoon-style {{Wackyland}}). Occasionally, though, a writer will explore the [[AnotherDimension implications of the name.]] ]]
** In ''ComicBook/WhateverHappenedToTheManOfTomorrow'', Mzy's reveals his true, five-dimensional form. Comicbook/LoisLane struggles to describe it afterwards:
--->''It had height, length, breadth, and a couple of other things. [...] [[BrownNoteBeing Looking at it made my head hurt.]]''
**
One time, Superman has to rescue one of Mxy's people from a [[AlwaysABiggerFish cosmic threat]] that is reducing him to only three dimensions. The entity attacks Superman, stripping away one of his dimensions and briefly turning him into a flat, two-dimensional image.
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* The goddesses and other heavenly beings in ''Anime/AhMyGoddess'' are 10-dimensional entities (in the "string theory" sense), not that it comes up very often. This means that, ostensibly, [[FridgeLogic Keiichi can only perceive and interact with three dimensions of his ten-dimensional love interest.]]

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* The goddesses and other heavenly beings in ''Anime/AhMyGoddess'' are 10-dimensional entities (in the "string theory" sense), not that it comes up very often. This means that, ostensibly, [[FridgeLogic Keiichi can only perceive and interact with three dimensions of his ten-dimensional love interest.]]
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In RealLife, it's (more or less) generally accepted that there are three spatial dimensions that we can perceive and interact with. This is backed up by basic physics, since if these higher spatial dimensions existed, then forces that follow an inverse-squared law for effectiveness across space (in other words, their effectiveness decreases by the square of the distance) such as gravity or electromagnetism would follow an inverse-cubed law, or inverse-higher power law. Time, or any number of other variables, can recognized as additional "dimensions", but with fundamental differences in how it works versus how space works; obviously, we can't just "turn around" and walk backward in time, or "turn around" and "remember" the future.

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In RealLife, it's (more or less) generally accepted that there are three spatial dimensions that we can perceive and interact with. This is backed up by basic physics, since if these higher spatial dimensions existed, then forces that follow an inverse-squared law for effectiveness across space (in other words, their effectiveness decreases by the square of the distance) such as gravity or electromagnetism would follow an inverse-cubed law, or inverse-higher power law. Time, or any number of other variables, can be recognized as additional "dimensions", but with fundamental differences in how it works versus how space works; obviously, we can't just "turn around" and walk backward in time, or "turn around" and "remember" the future.
Is there an issue? Send a MessageReason:
None


In RealLife, it's (more or less) generally accepted that there are three spatial dimensions that we can perceive and interact with. This is backed up by basic physics, since if these higher spatial dimensions existed, then forces that follow an inverse-squared law for effectiveness across space (in other words, their effectiveness decreases by the square of the distance) such as gravity or electromagnetism would follow an inverse-cubed law, or inverse-higher power law. Time is recognized as a fourth dimension, but with fundamental differences in how it works versus how space works; obviously, we can't just "turn around" and walk backward in time, or "turn around" and "remember" the future.

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In RealLife, it's (more or less) generally accepted that there are three spatial dimensions that we can perceive and interact with. This is backed up by basic physics, since if these higher spatial dimensions existed, then forces that follow an inverse-squared law for effectiveness across space (in other words, their effectiveness decreases by the square of the distance) such as gravity or electromagnetism would follow an inverse-cubed law, or inverse-higher power law. Time is Time, or any number of other variables, can recognized as a fourth dimension, additional "dimensions", but with fundamental differences in how it works versus how space works; obviously, we can't just "turn around" and walk backward in time, or "turn around" and "remember" the future.
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* Also parodied in ''WesternAnimation/AquaTeenHungerForce'', where the Mooninites claim to have 5000 dimensions, although Frylock points out that he only sees 2 (due to the titular aliens being old computer sprites).

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* Also parodied in ''WesternAnimation/AquaTeenHungerForce'', where the Mooninites claim to have 5000 dimensions, although Frylock points out that he only sees [[PaperPeople 2 (due to the titular aliens being old computer sprites).sprites)]].
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* In "A Victim of Higher Space" by Creator/AlgernonBlackwood, a man keeps accidentally falling into higher-dimensional space.
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* The aliens in ''Literature/StolenSkies'' exist in multiple dimensions, and UFO phenomena are the effects of them dipping into our perceivable universe. One character says it's like ripples in the surface of the pond when something falls in, if the surface was all you could perceive, and another explicitly compares it to the situations in ''Literature/{{Flatland}}''.
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* Appears several times in the ''[[Literature/TheThreeBodyProblem Remembrance of Earth's Past]]''. Notably, the Sophon is a proton-sized quantum supercomputer the Trisolarans created by unfolding two of its dimensions to the width of a planet and etching Strong Force-based circuitry into it before compressing it back down. This is further expanded on in ''Death's End'', where the crew of a human spaceship come across a "fragment" of fourth-dimensional space. [[spoiler: This proves to be a dire warning, as the Solar System is later struck by a devastating alien weapon that collapses it into two-dimensional space. Guan Yifan speculates that the universe used to be made of 10 macro-dimensions, but billions of years of warfare between unimaginably advanced civilizations collapsed it down to 3 and lowered the speed of light. This is expected to continue until the universe is only one-dimensional, with the perpetrators engineering themselves to survive while they wipe out all possible rivals.]]
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* The first season opening narration of ''Series/TheTwilightZone'' starts as follows: "There is a fifth dimension beyond that which is known to man."

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* The first season opening narration of ''Series/TheTwilightZone'' ''Series/TheTwilightZone1959'' starts as follows: "There is a fifth dimension beyond that which is known to man."
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In RealLife, it's (more or less) generally accepted that there are three spatial dimensions that we can perceive and interact with. Time is recognized as a fourth dimension, but with fundamental differences in how it works versus how space works; obviously, we can't just "turn around" and walk backward in time, or "turn around" and "remember" the future.

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In RealLife, it's (more or less) generally accepted that there are three spatial dimensions that we can perceive and interact with. This is backed up by basic physics, since if these higher spatial dimensions existed, then forces that follow an inverse-squared law for effectiveness across space (in other words, their effectiveness decreases by the square of the distance) such as gravity or electromagnetism would follow an inverse-cubed law, or inverse-higher power law. Time is recognized as a fourth dimension, but with fundamental differences in how it works versus how space works; obviously, we can't just "turn around" and walk backward in time, or "turn around" and "remember" the future.
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* Also parodied in ''WesternAnimation/AquaTeenHungerForce'', where the Mooninites claim to have 5000 dimensions, although Frylock points out that he only sees 2 (due to the titular aliens being old computer sprites).
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* This is how hyperspace works in Iain M. Banks' [[Literature/TheCulture Culture]] series. Realspace is surrounded by two layers of hyperspace, known as infraspace and ultraspace, one 'above' and another 'below'. These can be used not only to travel faster than light, but to move in four spatial dimensions, allowing hyperspace technology (such as scanners, teleporters, and weapons) to bypass normal three-dimensional barriers. Each hyperspace layer is also bounded by an 'energy grid', a region of infinite energy separating one universe from the next, which can also be weaponized in a process known as a hypergridintrusion, or 'Gridfire', essentially submerging a section of space into a bath of destructive energy comparable to the Big Bang.
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Frequently found overlapping with AlienGeometries. The distinction between the two is that under normal circumstances (well, as normal as this sort of thing can be anyway) an object occupying more than four dimensions will still follow all standard rules of normal euclidian geometry.[[note]]Perpendicular angles are 90 degrees, parallel lines never intersect, squares have straight edges, the angles of a triangle add to 180 degrees, ect.[[/note]] If the additional dimensions are ''curved'', however, normal geometry points to Creator/MCEscher and [[PassThePopcorn grabs a bucket of popcorn]].

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Frequently found overlapping with AlienGeometries. The distinction between the two is that under normal circumstances (well, as normal as this sort of thing can be anyway) an object occupying more than four dimensions will still follow all standard rules of normal euclidian geometry.[[note]]Perpendicular angles are 90 degrees, parallel lines never intersect, squares have straight edges, the angles of a triangle add to 180 degrees, ect.etc.[[/note]] If the additional dimensions are ''curved'', however, normal geometry points to Creator/MCEscher and [[PassThePopcorn grabs a bucket of popcorn]].
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Not So Different has been renamed, and it needs to be dewicked/moved


* Discussed in the satirical novel ''Literature/{{Flatland}}''. A. Square is a regular guy who happens to be a square, living in a two-dimensional universe. He is visited by a sphere who preaches to him the Gospel of Three Dimensions. The square is scornful of the idea initially, but eventually the sphere convinces him. When the square talks excitedly of the possibility of a ''fourth'' dimension, the sphere [[NotSoDifferent immediately dismisses the idea as ridiculous]].

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* Discussed in the satirical novel ''Literature/{{Flatland}}''. A. Square is a regular guy who happens to be a square, living in a two-dimensional universe. He is visited by a sphere who preaches to him the Gospel of Three Dimensions. The square is scornful of the idea initially, but eventually the sphere convinces him. When the square talks excitedly of the possibility of a ''fourth'' dimension, the sphere [[NotSoDifferent immediately dismisses the idea as ridiculous]].ridiculous.



* ''TabletopGame/DungeonsAndDragons'', using "BD&D Immortals" rules. InUniverse, there are five known spatial dimensions. The first three are the standard ones (length, width and depth). The fourth is [[SubspaceOrHyperspace hyperspace]] (AKA the "shortcut dimension") and is used for teleportation. The fifth is a [[EldritchLocation horrid alien space]] called the [[HyperspaceIsAScaryPlace Nightmare Dimension]]. It is possible for an Immortal to see into or even enter the 4th and 5th dimensions. There are creatures that exist in the 3rd-5th dimensions: we view them as monsters ([[NotSoDifferent and vice versa]]).

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* ''TabletopGame/DungeonsAndDragons'', using "BD&D Immortals" rules. InUniverse, there are five known spatial dimensions. The first three are the standard ones (length, width and depth). The fourth is [[SubspaceOrHyperspace hyperspace]] (AKA the "shortcut dimension") and is used for teleportation. The fifth is a [[EldritchLocation horrid alien space]] called the [[HyperspaceIsAScaryPlace Nightmare Dimension]]. It is possible for an Immortal to see into or even enter the 4th and 5th dimensions. There are creatures that exist in the 3rd-5th dimensions: we view them as monsters ([[NotSoDifferent and (and vice versa]]).versa).
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Crazy Awesome is a disambig now.


* ''TabletopGame/Gurps'': Powers:The Weird has rules for 4 dimensional beings and [[CrazyAwesome 4D martial arts]].

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* ''TabletopGame/Gurps'': Powers:The Weird has rules for 4 dimensional beings and [[CrazyAwesome 4D martial arts]].arts.
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restoring to original page


The next two dimensions are usually interpreted as being associated with AnotherDimension, hence the misnomer. Free movement in the fifth dimension, or "time squared", is usually seen as jumping sideways from branch to branch within the tree of choices and alternate events that make up {{the multiverse}} — so called {{alternate universe}}s. The sixth dimension, or "time cubed", is where things get ''really'' weird — we tend to see the sixth dimension as home to wildly alien places with [[EldritchLocation their own laws of physics]] where [[AcidTripDimension literally anything can happen]].
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* ''Anime/{{Doraemon}}'': There are at least four dimensions in existence, as the titular Doraemon's BagOfHolding is referred to as a "Fourth-Dimensional Pocket".

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* ''Anime/{{Doraemon}}'': ''Manga/{{Doraemon}}'': There are at least four dimensions in existence, as the titular Doraemon's BagOfHolding is referred to as a "Fourth-Dimensional Pocket".

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