History Main / PlanetSpaceship

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[[quoteright:350:[[Series/{{Andromeda}} https://static.tvtropes.org/pmwiki/pub/images/rsz_magogworldship1_7654.jpg]]]]
[[caption-width-right:350:Seldom has 'starship' been so literal... or insufficient.]]

* In ''Series/{{Andromeda}}'' the Magog come from worlds (yes, that's plural — twenty of them) locked together in some kind of structure. The whole thing is mobile, FTL capable, and even contains an artificial sun. [[spoiler: Oh, and it can survive a hit from a Nova Bomb, the largest weapon in the Commonwealth arsenal, normally capable of nuking entire solar systems.]]

* ''VisualNovel/MarcoAndTheGalaxyDragon'' has Astaroth’s Planet Crusher, a starship so enormous that it can ''literally'' [[EarthShatteringKaboom crush a planet]] in its grip.

* Spaceball One in the movie ''Film/{{Spaceballs}}'', a parody of ''Franchise/StarWars'', has a similar scale.

** One arc takes place on the [[http://www.rhjunior.com/quentyn-quinn-space-ranger-0045/ Sapphire Star]], a worldship of the Empire of the Seven Systems with a diameter in the tens of kilometers. It's used as a mid-range luxury cruise liner.
** The 40K bash arc has the "Hyooman Empiyah" come into the galaxy in a fleet of [[http://www.rhjunior.com/quentyn-quinn-space-ranger-17/ shipworlds]].

** A race of short-sighted robots packed their colonists onto a ColonyShip made from a gas giant. [[http://www.schlockmercenary.com/2003-08-03 It crashed]].

* ''WesternAnimation/SheRaAndThePrincessesOfPower'': During her research into the First Ones tech,[[spoiler: Entrapta finds out that Etheria is not a natural planet but in fact a planet-sized space ship.]]

* In ''Videogame/StarRuler'', the players can make ships anywhere from the size of a coke can to ships [[https://www.youtube.com/watch?v=IJJEMmzKzR4 larger than the galaxy]] . At around ship scale 1000, ships start to become larger than the planets that build them. Additionally, it's possible to turn entire ''planets'' into ships by researching the Planetary Thruster. Building a bunch of planetary thrusters, some shield generators, and planetary laser cannons essentially turns the planet into a [[StoneWall ridiculously durable, but relatively poorly armed ship]] with the capacity to store thousands of smaller ships, or [[MookMaker build]] [[MobileFactory more ships]] on the way to its destination by importing goods from the galactic bank.

* The closest RealLife equivalent to the fictional examples for this trope are [[https://en.wikipedia.org/wiki/Rogue_planet rogue planets]], which roam free across interstellar space, be they bodies that formed the same way stars do or planets ejected from a star system. Since we can detect just the largest and youngest ones, it's perfectly conceivable that there'd be ''a lot'' of them out there, down to Earth-sized ones or less.

* One of these serves as a toy-original form for [[{{God}} Primus]] of the ''Franchise/{{Transformers}}'' which can charitably be called a "Battle Station" and more accurately described as just [[https://www.tfarchive.com/toys/reviews/images/cyb_primus_station.jpg leaving him half-transformed creatively]]. Seeing as Primus's ''normal'' altmode is in fact, an actual Planet, being the [[YourSizeMayVary inconsistently-sized]] homeworld of the Transformers, Cybertron, this is a rather literalist example of the trope.

** The Attack Moons were hollow planetoid ships used by Orks during the War of the Beast. They were created by directly converting the matter of actual planets into the ships, with the same process allowing Attack Moons to repair by stripping planetoids.

Subtrope of MileLongShip. May be used as a BigDumbObject, TheBattlestar, or a GenerationShip. Commonly, though not exclusively, found in SpaceOpera. Compare DysonSphere and RingWorldPlanet. See also: UnnecessarilyLargeVessel, UnnecessarilyLargeInterior and AwesomeButImpractical.

** The Pa'anuri war ships are the size of planets; one is explicitly described as the size of Jupiter. They exert enough gravity to affect the orbits of natural planets.

* ''Anime/TransformersCybertron'': The planet Cybertron, the alternate mode of Primus (basically the transformers god), can transform into a spaceship of sorts.

* One of these serves as a toy-original form for [[{{God}} Primus]] in ''Franchise/Transformers'' which can charitably be called a "Battle Station" and more accurately described as just [[https://www.tfarchive.com/toys/reviews/images/cyb_primus_station.jpg leaving him half-transformed creatively]]. Seeing as Primus's ''normal'' altmode is in fact, an actual Planet, being the [[YourSizeMayVary inconsistently-sized]] homeworld of the Transformers, Cybertron, this is a rather literalist example of the trope.

* Unicron, the planet-sized, planet eating BigBad from the Transformers movie.

* ''Tenchi Muyo!'': All ships having a Royal Tree have a closed space with its own planet to house the crew. The Imperial flaghip Mikagami.
* ''Tenchi Muyo! GXP'': The Kamidake, Kamidake II, the Galaxy Police Academy etc.

* In Creator/LarryNiven's ''Literature/KnownSpace'' series, the Pierson's Puppeteers are a race of cowards, and the only Puppeteers humans have met are insane-- because no sane Puppeteer would trust his life to something so fragile as a spaceship. So when they discover a massive wave of radiation approaching their home system, they leave it behind... but take their planets with them. They put them in orbit around each other (see [[http://en.wikipedia.org/wiki/Klemperer_rosette Klemperer Rosette]] on Wiki/TheOtherWiki) and accelerated them to just under lightspeed, heading out of the galaxy. Because humans have faster than light starships (which Puppeteers are too sane to use), they expect humans to greet them at their destination, the Clouds of Magellan.

** On a smaller scale, ork roks are asteroids and other large celestial bodies that have been hollowed out, filled with orks, sealed against vacuum, and fitted with ginormous engines to be sent through the Warp. Once close to a planet, they then serve as one-time DropPods.

** Warworld, which frequently falls into the hands of {{ComicBook/Superman}}'s GalacticConqueror enemies.

* Megatron wanted to turn Cybertron into this in ''ComicBook/TheTransformers'', but never managed it.

** Abel's Ark is an EldritchStarship the size of an entire solar system. [[spoiler: When the Durandal is rammed into it in ''Episode III'', you can actually see what's left of it when you go inside the Ark.]]

* The ''Dammerung'' in ''VideoGame/{{Xenosaga}}'' is described in the accompanying Perfect Works manual as an artificial planet the size of Lebanon. It's the headquarters for {{Fiction 500}} company Vector, and contains at least one megalopolis in an area large enough to have a real weather system.

* ''Xenosaga'': The Kukai Foundation's home.
* ''Xenosaga Episode II: Jenseits von Gut und Böse'': Abel's Ark, a star system class ship.

* ''[[http://1d4chan.org/wiki/The_ship_moves The Ship Moves]]'' (Or ''Warhammer 50,000: Age of Exodus''), a variation setting based off of '''TabletopGame/{{Warhammer 40000}}'' crafted on the /tg/ board of Website/FourChan.

* ''Anime/Gundam00AWakeningOfTheTrailblazer'' shows the massive main ship of the ELS, a massive ship with the diameter of approximatelly 3000km made up of sentient living metal. Enhanced human tale: MAD WANG 1160 also mentions planet-sized ships but also claims their large size tend to make them a big target thus are relatively rare.

*** At some point in the past they took a moon of their homeworld and '' turned it into a [[CrazyAwesome spaceship]]''. [[AllThereInTheManual Never appeared on page and is only mentioned in the inserts]], but may have been destroyed off-screen by [[PhysicalGoddess Xadhoom]] (the flashback showing her destroying one such place shows one that doesn't exactly look like the one we saw her destroy on-page).

* The titular artificial RingWorldPlanet in ''Film/{{Elysium}}'' is a space habitat for wealthier classes after an apocalyptic overpopulation crisis on Earth. It is built in a ring like shape that rotates to maintain gravity and has a breathable Earth like surface. Elysium is built close to Earth to work as something of a ConvenientlyClosePlanet for poor people on Earth who manage to buy their way up.

* The titular artificial RingWorldPlanet in '' Film/Elysium'' is a space habitat for wealthier classes after an apocalyptic overpopulation crisis on Earth. It is built in a ring like shape that rotates to maintain gravity and has a breathable Earth like surface. Elysium is built close to Earth to work as something of a ConvenientlyClosePlanet for poor people on Earth who manage to buy their way up.

* The titular artificial RingWorldPlanet in ''Film/Elysium'' is a space habitat for wealthier classes after an apocalyptic overpopulation crisis on Earth. It is built in a ring like shape that rotates to maintain gravity and has a breathable Earth like surface. Elysium is built close to Earth to work as something of a ConvenientlyClosePlanet for poor people on Earth who manage to buy their way up.

* ''Literature/CradleSeries'': A necessity for the Vroshir. The void between universes is nothing but corrosive, horrific Chaos. The only thing that keeps it at bay is a healthy world with millions of living human souls. The Abidan control and watch over normal worlds, but the Vroshir are those who are criminals under Abidan law, so they can't find safety there. The solution is to kidnap people by the million and force them to live on nomadic planets, giving the individual Vroshir a mobile base of operations.