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Single-Biome Planet

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Imperial Officer: Lord Vader, the rebels have fled the ice planet of Hoth. After going to the swamp planet of Dagobah, Skywalker has rejoined his friends on the desert world of Tatooine. And now the rebel fleet is massing for an attack on the forest moon of Endor.
Darth Vader: I sense a great disturbance in the Force.
Imperial Officer: My lord?
Darth Vader: How else can so many worlds be totally covered with only one terrain type without regard to latitudinal variations?

Earth is a wonderfully varied place with an amazingly diverse biosphere. On this single planet, you can find jungles, mountains, forests, deserts, prairies... we must be the most varied planet in the universe. Or you'd think so after seeing so many alien worlds trapped in solitary, homogeneous landscapes.

Many other planets and natural satellites will often be defined by a single setting. It doesn't matter if the events of the story only take place on a small portion of the planet — we are still told the entire planet has one climate; specifically, the same climate as where the story takes place. Very rarely does any planet have the same level of environmental diversity as Earth, despite being as large and having a normal orbit. In addition, beyond having simply uniform surface biomes, these planets often have a single ecological community over their entire surfaces — a swamp planet, for instance, isn't just covered by swamps, it's covered by the exact same swamp everywhere, with precisely the same native plants and creatures. For this reason, alien creatures are often simply described as being native to Planet Such-and-Such, rather than to any specific location on it, with the assumption that you'd find them regardless of what spot you landed on.

This is an ecological equivalent to the Planet of Hats, and the locals will often have a hat that resembles the human cultures that inhabit similar environments.

A creature well-suited to the local environment may be upgraded to horse status, if it's big enough.

Note that a Single Biome Planet is not necessarily a single climate planet. Even on planets and moons lacking atmospheres, there are bound to be variations in temperature due to latitude if the planet or moon receives a significant amount of radiant heat from a star. A planet or moon with atmosphere will of course have much more complex weather patterns due to wind and precipitation.

Notable classifications (subtropes):

  • City Planets (Ecumenopolis) — Urban sprawl has taken over the entire surface of a world. Theoretically possible, but only with extreme technology and/or a constant inflow of resources from off-world. May serve as home base to a culture of Planet Looters. Often has a population in the trillions. The concept supposedly first appeared in the writings of 19th century spiritualist Thomas Lake Harris. The first recognized usage in science fiction would be Trantor in Isaac Asimov's Foundation. The planet Coruscant in the Star Wars movies would probably be the most familiar to modern audiences. The logistics of such worlds — how they get food, dissipate excess heat and so forth — can be a subject of geeky speculation, as shown in multiple Irregular Webcomics.note  May also be a machine planet (Cybertron from Transformers) where a single biome is plausible due to the planet possibly being programmed as such. Conversely, such a planet may not be bothered with having an atmosphere hospitable to organic life anyway. See also Planetville.
  • Cloud Planets — The land is not where Newton wants it. If something or someone lives here, either the ground floats through the sky in chunks, or there are hover-cities — unless the natives are Living Gasbags. Either way, watch that first step. Sometimes explained by by making them Jovian planets: although no known gas giants are anywhere near habitable, there is nothing theoretically preventing the possibility of a gas giant having a layer (gas giants tend to be highly stratified) with Earth-normal atmosphere, pressure and temperature — it's unlikely, but so is finding a habitable Earth-like world. Venus, again, is another prime example; some levels of its upper atmosphere would be pretty nice and potentially habitable — if not for those pesky sulfuric acid clouds around — and there is serious research into the possibility of floating missions or even colonies to Venus where Earth atmosphere would be used as the lifting gas and therefore settle at the layer of the Venusian atmosphere that matches Earth-normal temperature and pressure..
  • Dark Planets — Like the Desert, but owe their lack of plant life to perpetual night; usually due to constant opaque cloud cover or spooky ominous fog. If inhabited, this might be the product of industrialization run amok, with the clouds being clouds of pollution. Home of the Big Bad, look for the Evil Tower of Ominousness with the perpetual lightning storm. It's like Planet Mordor. This is kind of like the real-life Venus, which even comes complete with the lightning storms. However, such planets in fiction are invariably described as "barely habitable", whereas the real version is of course completely uninhabitable. Dark Planets could also be Rogue Planets that do not orbit any star, although then there is the issue of what is keeping the atmosphere warm enough and replenishing the oxygennote . Some of these planets could be tidally locked to their star with one side permanently facing it, rendering the facing side uninhabitable due to temperature and the dark side extremely cold, usually with a small habitable strip on the divide. These worlds also generate extreme weather, which can add to this atmosphere. A dark planet can also orbit a brown dwarf star, which radiates infrared heating radiation but barely any visible light, and the entirety of the latter is deep red. The appearance of the planet's sun, namely an ominous, huge black and red stripy circle in the sky, adds bonus points to the gloominess and doominess of the planet, as does the local flora, colored pitch black in a desperate attempt to catch any and all scarce photons available for photosynthesis.
  • Desert Planets — These look like the cheaper parts of California or gravel quarries in Wales, and are thus very common. May have aliens that act like Bedouin or Touareg, and a thriving black market on water. Multiple suns are common. Mars is sort of a desert planet, but with no breathable atmosphere, although recent discoveries pretty reliably show that it's an Ice Planet as well — it's just that all that ice is under the desert. Desert Planets are fairly realistic as these sorts of planets go, as long as there is some water. Any place that is sufficiently arid becomes a desert, but some ocean (say, 20% of the planet's surface), or underground water would be needed to support the plant life needed to create a breathable atmosphere.
  • Farm Planets — If a Planet City is lucky, there will be another planet in the same system which is dedicated entirely for food production. Most of these are like a giant version of an American Midwest wheat farm. Complete with hicks. Technology level may range from highly advanced (in which case they are often largely automated with a population as low as hundreds or thousands) to feudal.
  • Forest Planets — A planet whose land surface is mostly or entirely covered by forest. While Jungle Planets tend to be tropical in nature, a Forest Planet tends to have a more temperate climate with trees similar to oak, birch, redwoods and so on. Sometimes found in the form of a Forest Moon orbiting a large planet. Earth several million years ago could be considered a Forest Planet, since the warmer atmosphere and higher atmospheric humidity levels meant much more of the planet was covered in lush, tropical landscape.
  • Garbage Planets — The entire planet is being used as a dumping ground for useless waste. Likely to act as home for scavengers looking to make a quick buck, treasure hunters seeking some long-lost treasure, and large numbers of mercenaries and criminals. The actual surface conditions can range from desert-like to incredibly hostile if the Phlebotinum is leaking out of ships.
  • Ice Planets — Planets whose entire surfaces look like Greenland glaciers. This is a fairly plausible kind, as there actually are frozen-over planets and moons (for example, several moons of Jupiter and Saturn). Planets that normally have large oceans (like Earth) can look like this during a really deep Ice Age, and paleontologists believe that this may have happened to Earth in the past in a controversial scenario known as "Snowball Earth". The obvious question on an Ice planet is how it sustains life if there are so few plants to provide oxygen and a food chain; this paradox can be somewhat solved by allowing for a narrow equatorial band warm enough to support plant life, or by limiting life to the sea and having the food chain be based on geothermal energy/chemosynthesis (i.e. how we think life on Europa would work). It's interesting to note that the Saturn's Moon Titan, while being an "Ice Planet" of −179.2 °C, seems to be in every way just as dynamic and varied a planet as the Earthnote .
  • Jungle Planets — Mind the bugs, they are positively enormous. Often home to the Cargo Cult and vulnerable to a God Guise. Expect most things that crop up in Hungry Jungle stories. Equivalent in video games is the Jungle Japes.
  • Mountain Planets — A planet covered in mountains to a notable percentage of its dry land. Sometimes it's simple as that, but perhaps even more often, the planet is depicted capable of maintaining human life only on high elevation. Usually it means the planet's gravity is high enough that the atmosphere downhill is too dense and toxic for humans. Which kind of biome is actually to be encountered at high elevation differs, but you can expect either Tibet or Tyrol. Lots of rope bridges/ziplines and ace pilots to let you move around the place.
  • Ocean Planets — These tend to have just a few, if any, mountains tall enough to breach the surface and make islands; if there are, they're prime beachfront vacation spots. These worlds are often home to aquatic aliens of various sorts, alongside various Sea Monsters; air-breathers usually hang around on whatever islands may be present or in floating cities. In some cases, these worlds started out with a lot more dry land and became flooded at a later date.
  • Swamp Planets — Like the Jungle, but easier to lose your shoe. (Or your ship. Just ask Luke Skywalker.)
  • Twilight Worlds, a.k.a. Tidally-Locked Planets — While not truly single-biome, they traditionally have only about three: blazing hot desert on the day side, temperate zone of perpetual twilight at the day/night terminator, and sub-freezing wasteland on the night side. Expect some extremely windy weather and horrendous ocean currents, if the place follows Laws similar enough to Newton's and having a vapour-rich atmosphere worth speaking of. Also, the temperature differences are often unrealistically high, since authors tend not to include the aforementioned winds and currents (and the transfer of heat by winds and currents).
  • Vancouver Planets — Planets noted for a striking similarity to the pine-covered, mountainous oceanfront regions around the Canadian city of Vancouver (which, by an odd coincidence, is the filming location of many sci-fi television series).
  • Volcano Planets — Defined by earthquakes, smoke, rivers of lava, and lots and lots of unchained mountains you don't want to climb. Featured in Revenge of the Sith; the Y-class planet in the Star Trek: Voyager episode "Demon" is also similar to this. Equivalent in video games is Lethal Lava Land. In the real-life solar system, this is a fair description of Jupiter's moon Io. Earth used to look a bit like this, too. Planetologists expect that any rocky planet will look like this in the first few hundred million years of its formation, so expect to see a lot of them. The air almost certainly won't be breathable, though, so bring your ventilator mask.

Contrast Patchwork Map. Near the polar opposite of All Planets Are Earthlike. May overlap with One-Product Planet. See also Planetville. Works in which Venus Is Wet frequently depict it as a Jungle Planet, an Ocean Planet, or a Swamp Planet.


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    Anime and Manga 
  • In the original Bakugan series, the six elemental attributes Bakugan can have are explained as being adaptations to (and named after) the six planets they hail from: Pyrus is a fire planet, Aquos is a water planet, Subterra is an earth planet, Ventus is an air planet, Darkus is a darkness planet, and Haos is a light planet.
  • Doraemon: Nobita's Great Battle of the Mermaid King mostly plays this trope straight with the alien mermaid Sophia's home world, Planet Aquadia, whose surface is almost entirely covered in water. When Sophia gets stranded in Tokyo due to one of Doraemon's faulty gadgets and meets the gang, she admits she never left the waters her entire life and it's the first time she saw the surface world. However, the final battle of Aquadia reveals there are small islets of land on it's surface, with the gang defeating the Big Bad, Lord Bulkin, by tricking him to land on a beach (a plot point, as Bulkin wields a weapon with Making a Splash abilities that's useless on dry land).
  • Galaxy Express 999 visited a Dark Planet, subverted in that it's actually a rather pleasant place with lush forests, pretty flowers, low crime rates, and genial people— lovely to visit apart from the difficulty of finding your way around. At least it was...until a native Mad Scientist, having decided that her people's way of life was archaic and hopelessly out of step with the rest of the galaxy, shut off the planet's natural light-dampening field and shot an artificial light source into orbit. Everyone and everything on the planet (herself included) promptly dropped dead from photosensitivity.
  • Justified on Outlaw Star with the explanation that since the planet in question is a resort planet, they terraformed it that way on purpose. Heck, it's not even a Single Biome Planet, given the existence of snow-capped mountains.
  • The Five Star Stories has only two of these, out of the half-dozen or so habitable planets that orbit the eponymous stars. There's Juno, which is a relatively young planet currently in a jungle-covered phase & Pestako, a tiny, clapped out mining planet that has no natural atmosphere & is slowly being terraformed into a city planet, complete with roads so big you can see them from space. The rest are Earthlike, with some minor variations in their average temperature & terrain.
  • Terraformed planets and moons in Cowboy Bebop (e.g. Ganymede seems to be a water moon, Europa a kind of Western Prairie Moon, Titan a Desert Moon...) Earth has also become one of these. As a result of being constantly bombarded by asteroids, almost all of the planet is a dry, craggy wasteland.
  • Trigun is set on the planet Gunsmoke, which appears to be nothing but desert. Like Mars (or, more to the point, Arizona), it does have canyons that suggest more plentiful water in the past.
  • Dragon Ball: When we are first introduced to Namek, the characters land on a set of large islands in green-colored seas, with fields of blue grass and trees with straight trunks and circular crowns. Over the entire lengthy run of the Namek Saga, which features characters regularly flying huge distances across the planet, we never see anything aside from this. For bonus points, since the planet has three suns, even the time of day is unchanging across the entire trip.
  • Armored Trooper VOTOMS averted this with planet Melkia, of which we see deserts, a barren wasteland ravaged by acid rain (the outskirts of Uoodo) and a Vietnam-esque lanscape of lush tropical jungles (Kingdom of Kummen). Played straight, however, with wasteland planet Sunsa (whose current inhospitality is said to have been solely caused by the devastating wars humans waged there) and desert planet Quent (which is implied to have been a much livelier place millenia ago when the precursors still lived).
  • In Gargantia on the Verdurous Planet, Earth experienced an ice age a while back, and once it ended the world became a gigantic ocean. All the remaining humans live in ships that sail around in massive fleets; they power their ships by seeking out "ocean galaxies", huge swarms of bioelectric creatures that are actually solar-powered nanomachines.
  • Space☆Dandy
    • Planet Machinia, the galaxy's designated dumping spot for junk. The entire planet is one giant junkyard, and QT geeks out at the possibilities of what he can find.
    • Planet Legato is a single gigantic library.
  • Transformers Zone has Wall, a water planet.
  • The racetrack for the space race in GO-GO Tamagotchi! episode 34 goes through a few single-biome planets. The biomes represented by the planets are, in order of appearance, a desert, a snow/ice world, and a forest.

  • In almost every drawing or painting of Earth created prior to the famous Blue Marble photos, the Earth was apparently a single-weather-system planet, with not a cloud to be seen anywhere.

    Comic Books 
  • The 1980s British science fiction comic Starblazer had a variety of such planets.
    • City Planets:
      • Issue 29 "The Moonstealers": The planet Joaphat is covered entirely by a gigantic city with no areas of countryside.
      • Issue 59 "Starseeker Squad": The planet Bessel has an Earth city/colony that covers the entire planet.
      • Issue 64 "The Exterminator": Vanderdecken is a vast, ancient city-planet. Although this mysterious world is millions of years old, everything on it is in perfect operating condition.
      • Issue 208 "Planet of the Dead": The planet Vegas Prime is entirely covered in all manner of vice dens.
    • Cloud Planets: Pelion (issue 167). The factories of Cybeset industries are suspended above the poisonous acidic atmosphere.
    • Dark Planets: Largos (issue 56). It lost its sun long ago and is in an almost permanent state of darkness.
    • Desert Planets: Astalia (issue 9), Delta (issue 63), Glan (issue 103), Silicon IV (issue 50)
    • Farm Planets: Colonia (issue 161), Spiros IV (issue 53), Oprel (fish farming, issue 132), Vesta (issue 38)
    • Ice Planets: DB/907 (issue 179), Keeron (issue 33), Mongros (issue 43), Pax Ultima (issue 166), Sartog (issue 228), Thrymheim (issue 127), Vardy (issue 87)
    • Jungle Planets: Alterus (issue 71), Arenal (issue 146), Darga (issue 27), Eptiran (issue 106), Kreel (issue 144), Persephone (issue 269), Sygma 334 (issue 235), V8-Nam (issue 273), Veta (issue 5), Vloorg homeworld (issue 262), Zorg (issue 3)
    • Ocean Planets: Hera (issue 90), Monta (issue 161), Oceania (issue 102), Samor (issue 34)
    • Swamp Planets: Havena (issue 268), Holci (issue 161), Icon (issue 163)
  • In The DCU:
    • Green Lantern:
      • The planet Oa (headquarters of the GL Corps) is a Desert Planet.
      • The presence of The Entity, a massive Winged Humanoid that is the manifestation of the White light that creates life, within Earth is the reason that Earth is not a Single Biome Planet, but rather has such a diverse array of life and environments.
    • In the Omega Men comics, the Vega system alone has multiple examples.
      • Dredfahl has a great deal of volcanic activity (Volcano Planet) and was a dumping ground for toxic materials from the rest of the system (Garbage Planet).
      • Euphorix is a lush tree-covered world (Forest Planet).
      • The planet Hnyxx is more than 90% covered by water and has several water-dwelling races (Ocean Planet).
      • Karna is a warm, humid planet covered by jungles and swamps (Jungle Planet + Swamp Planet).
    • Legends of the Dead Earth:
      • In The Flash Annual #9, Bryan and Tristan Mallory's planet is a frozen wasteland. However, it was a lush and green planet before the devastation resulting from the destruction of a planet in a nearby solar system (presumably Earth) caused numerous volcanoes to erupt, sending tons of ash into the atmosphere and blocking out the planet's Binary Suns.
      • In Aquaman Annual #2, the first storyteller believes that Earth was a desert planet, as is the case with his own planet.
    • Wonder Woman
      • Wonder Woman (1942): The Golden Age of Comic Books treats every planet in the solar system outside of the earth itself as planets with a single biome; Mars and Mercury are desert planets, Neptune an ocean planet, Pluto a dark ice planet, Venus a lush forest and Saturn's moons dry cities. Amusingly the moon doesn't get this treatment and is instead depicted with forests, grasslands and volcanoes that spew glass instead of lava.
      • In Wonder Woman (1987) "Hope's End" is an apparent desert planet that's used as a deadly prison planet. "Hope's End" has multiple moons rather than suns, and part of its hellish nature is that the atmosphere has a much lower oxygen level than is comfortable for humans. A prisoner notes that they've only seen a fraction of the place and it's possible it's not all desert.
    • New Krypton is the planet where Post-Crisis Kryptonians relocated his capital city Kandor to. The Who is Superwoman? storyline reveals it's a frozen world, which is justified because it's an artificial planet made from ice.
  • White Sand: Subverted. The day side of Taldain appears to be a desert planet, but it has many unique biomes—it's just that they're all covered in sand. When some Nightsiders complain about being trapped in the desert, Kenton laughs and says they're nowhere near the desert. To prove it, he dribbles some water on the sand, which causes vines to burst out of the ground that they can then harvest for food and water. The main setting is actually a port city on the ocean.
  • Star Trek: Early Voyages:
    • In "Flesh of My Flesh", it is mentioned that the Masai, from whom Moves-With-Burning-Grace is descended, settled on the desert planet Eristas during the first phase of humanity's expansion from Earth.
    • In the two-part story "Cloak and Dagger", Darien 224 appears to be a desert planetoid due to the high degree of radiation emitted by the system's sun.
    • In "The Flat, Gold Forever", the Federation colony Prairie is an agrarian planet.
  • The Worlds of Aldebaran: Aldebaran-4 is mostly ocean with a few scattered islands, Betelgeuse-6 is a desert world with most of the vegetation confined to deep river canyons. Averted with Antares-5 which has a varied biosphere.
  • In Mickey Mouse Frontier Chronicles an ocean planet is mentioned, but never shown.
  • Several of them in Valérian. The most unpleasant one is definitely Zomuk, which is essentially a giant garbage dump for the rest of the galaxy.

    Comic Strips 
  • Although Jerry Pournelle famously parodied this trope with the phrase "It was raining on Mongo that morning", the original planet Mongo in the old Flash Gordon comics is actually an aversion. It's specifically Earth-like, in that humans and near-humans can live comfortably there indefinitely without life support systems, which means it should be expected to have the full variety of potential environments as Earth...and it does. Jungles, forests, deserts, glaciers, etc. It's not a bad example of a relatively realistic habitable world, in some ways.

  • Taken to ridiculous extremes by the Warhammer 40,000 fanfic P*R*I*M*A*R*C*H*S to the point that the eponymous Primarchs cannot even fathom the concept of a planet having more than a single biome, proclaiming any such planet they encounter to be an abomination which must be destroyed.

    Film — Live-Action 
  • The Chronicles of Riddick
    • In Pitch Black, the planet the plot takes place on starts as a desert planet, then turns into a night planet due to an eclipse.
    • The Chronicles of Riddick (2004) starts on an ice planet, heads to a desert-ish planet, and winds up on the heat-scoured Crematoria. The latter at least has the justification of being so close to the sun that the facing side actually melts every day, but the air is still somehow breathable.
    • And finally averted in Riddick, in which Riddick finds himself on what appears to be a rocky desert world. It turns out that there's reasonably fertile grasslands just a few miles away, on the other side of the mountains.
  • All films adapting Dune feature the eponymous desert planet roamed by gigantic sand worms (the 1984 film and the 2021-2023 film duology, that is).
  • In Starship Troopers, there is an entirely single biome solar system. Even the moons are deserts. Apparently, they all look like Wyoming's Hell's Half Acre or the Badlands of South Dakota. Rasczak mentions that the Fleet glasses each planet before the Mobile Infantry is sent in so it explains why they all look like a wasteland.
  • In the TV movie Rudolph the Red-Nosed Reindeer, Earth itself seems to have become a Cloud Planet, or at least a Single Weather-System Planet. While the song's "foggy Christmas eve" might merely have left Santa socked in at the North Pole, the movie shows the entire world drowning in a pea-souper from dusk to dawn.
  • Averted in Avatar. Although most scenes take place in a jungle region, far away shots show that Pandora has vast oceans as well as polar ice caps. When gathering allies they visit one Na'vi clan that's living along some sea-side cliffs and another dwelling in an area of large, open grasslands. Most of the plot just focuses on the jungle region. The sequel shows the oceans in detail.
  • The setting of Hunter Prey is a desert planet.
  • Waterworld is set in a future where global warming has turned our earth into an ocean planet, with dry land as nothing but a legend (and science be damned!).
  • Flash Gordon (1980): Two of the moons of Mongo fit this trope. Arboria is a Jungle/Swamp Planet and Frigia is described as an Ice Planet. And all of these and Mongo appear to be Island Planets floating inside a weird, glowing nebula-like thing with a vortex as an entryway. It's not a conventional solar system as we would know it. Its implied that these are what is left of planets that have been attacked by Ming to prevent them from becoming a threat.
  • Beetlejuice: The afterlife (ghost) version of Saturn is a Desert Planet (complete with Sand Worm) instead of a gas giant. In the early script, it was specifically the moon Titan. Though in the film, the giant planet seen in the sky could be Saturn.
  • Spaceballs: The protagonists crash-land on the "desert moon of Vega", which bears a startling resemblance to Tatooine in A New Hope.
  • In The Matrix, the Earth is a dark planet, courtesy of eternal clouds of self-replicating nanomachines that people spread into atmosphere before the events of the movie in order to stop solar-powered robots.
  • Implied in The Faculty. The Queen Alien mentions that her homeworld used to be covered in nothing but oceans before some disaster turned it into a barren wasteland.

    Live-Action TV 
  • Andromeda's standard planetside-setting is the Vancouver Pine Forest Planet. This is somewhat lampshaded when the trees are once referred to as "terraforming Pines".
  • Battlestar Galactica (1978): In "The Gun on Ice Planet Zero", the surface of the planet Arcta is entirely covered by ice and snow, with a constant blizzard blowing overhead.
  • Doctor Who: Usually, only a small part of any given world is shown, so it is not possible to generalize about the entire planet. However, there are a few cases where a world is explicitly stated as being a Single-Biome Planet:
  • The third (second?) season of Lexx has the Lexx trapped in orbit between Fire, a volcanic planet covered in endless desert, and Water, a planet almost entirely covered by water. It could be somewhat justified as the planets are actually Hell and Heaven respectively, with the former being ruled by what's hinted to be the Devil himself.
  • Lampshaded on the episode of The Muppet Show where the cast of Star Wars are the guest stars. "Seems we've landed on some sort of comedy variety show planet!"
  • Deconstructed in Power Rangers RPM, which takes place on a Desert Planet. The thing is, three years before the series takes place, it was earthlike — and the series takes place in a Please Insert New City Name version of Boston, most certainly not in a desert region, showing just how much of the planet is sandy wasteland. The cause of the mass desertification is subtly implied to be nuclear carpet-bombing. The background radiation is so high that long-distance communication is all but impossible, and orphans with cancer are prevalent.
  • Red Dwarf:
    • The series features "ice planets" and "lava moons", and one ocean planet they pick for a fishing holiday.
    • Red Dwarf also has a tendency to make many planets Earth-like. Earth is the only planet to evolve life in this show. Any planet where the cast encounters "life" has previously been wholly or partially terraformed by humanity, and the inhabitants originate from human science, in one way or another.
  • One of the parallel worlds in Sliders has Earth turn into a desert world after all the water dries up... somehow. Nations no longer exist, water is extremely valuable, and lawless gangs are free to do what they want.
  • Stargate-verse:
    • Both SG-1 and Atlantis generally avert this trope by rarely showing much of the entire planet other than a small (i.e walkable) area around the Stargate. The Stargate itself tends to be in a Vancouver-like pine forest or nearby area, which is eventually lampshaded by the characters: the assumption being that the creators of the gate must have only placed Stargates on worlds and areas where they liked to live. The actual fact being that life on all of those worlds were recreated by some of the Stargate creators who survived a plague that destroyed everything.
    • Subverted in the Stargate SG-1 episode "Solitudes", wherein Captain Carter manages to get out of the cavern she and Colonel O'Neill are in, revealing the surface is a desolate ice planet. Only, it turns out they're on Earth, in Antarctica.
    • Subverted in Stargate Atlantis with the planet where they find Atlantis. They assume it to be an ocean world, but later find out that it has several large land-masses that are inhabitable. Atlantis was in the ocean because it couldn't very well submerge into the ground when the Ancients needed to hide it. Additionally, the planet's weather patterns are different: the continents are still a considerably smaller percentage of the surface than Earth, which means hurricanes can reach strengths virtually unheard-of on Earth (as seen in the two-parter "The Storm" and "The Eye").
    • In Stargate Universe most planets might as well be of the single biome type; None of the crewers can explore further. With a timer on how long they can get back, they'll never know if this was truly a total desert planet or was just the Sahara of an Earth.
  • Star Trek:
    • The franchise has a tendency to either have totally Earth-like planets (class M) or single-biome planets. At least in The Original Series, they used so many class M planets in order to keep production costs down. Most planets home to advanced civilizations have some degree of weather control, although the extent this is used to change the biome varies with some simply using them to prevent dangerous weather.
    • Vulcan is somewhere between Earth-like and a Desert Planet.
    • Risa, the "Pleasure Planet", uses technology to make the entire planet into a tropical paradise, as long as your idea of paradise is a sunny day in Hawaii (as noted before, the Federation consists of a large number of diverse societies with a large number of diverse homeworlds, so relaxing at the beach may not suit everyone the same). In an episode where the weather control was switched off it immediately began raining for several days.
    • Ferenginar, the Ferengi homeworld, is a class M planet that's home to virtually constant, planet-wide torrential downpours, due to weather control technology and the Ferengi's preference for rainy days.
    • The homeworld of the Breen, who are always shown wearing opaque full body environmental suits, is known mainly as an Ice Planet, but according to Weyoun is "actually quite temperate." The planet itself is never actually seen, and this confusion serves to reinforce the mystique of the Breen.
    • Andoria, home of the Andorians, is an Ice Moon.
    • Star Trek: The Original Series:
      • In "The Naked Time", the planet Psi-2000 is described as a frozen wasteland (i.e., an Ice Planet).
      • In "The Savage Curtain", the surface of the planet Excalbia is completely covered with molten lava, making it a Volcano Planet.
    • Star Trek: Deep Space Nine once featured a minor character (a date of Jake Sisko's) who said she and her parents often visited lush forested parks on Vulcan. So much so, she thought it was a Forest Planet before realizing that that is not the biome most people associate with Vulcan. Also, she didn't realize that Vulcan had any indigenous people.... You know, come to think of it, Nog may have had a point in suggesting she just keep quiet.
    • Star Trek: Discovery: Michael Burnham visits Sarek and Amanda's home on Vulcan, which is located in a forested area, making it the first time non-desert Vulcan is ever actually seen on screen. Emphasizing the point, she arrives during a rainstorm.
    • Star Trek: Voyager:
      • The Ocampan home planet is a desert planet where the only really habitable areas are underground. This is justified in that the Caretaker accidentally caused an ecological disaster that eliminated all the water from the surface.
      • In "Thirty Days", the ship comes across an ocean world with no landmass whatsoever. In its center is a machine created by Precursors that stops the water from dissipating out into space.
    • Star Trek: Picard: Because Vashti is part of a binary star system, it's hotter and drier than Earth, and when viewed from space, the planet surface is mostly desert except for small pockets of water and vegetation.
  • The Twilight Zone (1959): In "On Thursday We Leave for Home", V9-Gamma is a desert planet because its two suns shine perpetually.

  • The Twilight Histories miniepisode “Frozen Earth” has Earth becoming a frozen wasteland due to getting knocked out of its orbit. By the time of the story, it’s almost as far out as Neptune.

  • Journey into Space: In The Return from Mars, the Discovery becomes trapped in a time warp and arrives on a desert planet named Tribos. Doc determines that the planet's axial tilt is virtually zero, accounting for its single biome. The crew eventually discover that Tribos is in fact Earth in the very distant future.

  • BIONICLE has Bara Magna, which is almost entirely desert, although it does have a few oases as well as icy peaks towards the north. Its two moons, Aqua Magna and Bota Magna, also count towards this trope; Aqua Magna is covered entirely with ocean, and Bota Magna is covered entirely with jungle. Bara Magna and its moons were originally a single planet, Spherus Magna, that had all three biomes before The Shattering, and it was the destiny of Mata Nui and Makuta Teridax to merge the moons with the planet to reform Spherus Magna.
  • There was a LEGO Space line simply called Ice Planet 2002. It centered on three astronauts exploring Krysto, a planet whose terrain is primarily made up of ice.
  • In the North American version of the Slizer storyline, each of the Throwbots originated from a Single Biome Planet appropriate to that Throwbot's element. For example, Torch came from a volcanic planet while Ski came from an ice planet.

  • Homestuck:
    • While the "real" planets (Earth and Alternia) possess varied landscape and environments, the Lands generated by Sburb are each dominated by a single alien environment — for example, a planet entirely of blue stone covered by glowing blue forests and lakes and rivers of tar, one covered in molten lava dotted with islands of metal and clockwork, and so on. Justified in that being single-biome planets is the entire point of the Lands as game constructs.
    • In addition, the Skaian Battlefield is covered entirely in a vast chessboard landscape, dotted with trees here and there.
    • In the Alpha timeline, the Condesce floods the Earth, artificially turning it into an Ocean Planet to make it more hospitable for an aquatic alien such as herself.
  • Irregular Webcomic! lampshades this in one of its podcasts: when Admiral Ackbar calls Endor a forest moon, C-3PO corrects him heavily, saying that it has a small ocean, two deserts, and a mountain range with an extensive cave system before being turned off.
  • Darths & Droids: Lampshaded (of course) when they're the result of the DM not having much time to design a proper ecosystem.
    Luke: Huh. A swamp. What are the odds of that?
    R2D2: Higher than you might expect.
    Luke: Maybe we should move the ship.
    R2D2: I... have the feeling that might be a waste of time.
  • Outsider: Among the Loroi Sister Worlds, Perrein is a hot and humid jungle planet covered almost entirely by immense fungal forests with canopies so thick that the forest floor is in perpetual night, while Taben is an ocean world whose landmasses are limited to a small continent in the northern hemisphere and an equatorial island chain. Deinar averts this, as its main supercontinent, while generally arid, is split between a variety of environments such as mountain ranges, forests and broad river valleys.

    Web Original 
  • Brackenwood: The titular planet is covered by a trackless, pole-to-pole temperate forest, broken only by a single meadow area and by the occasional mountain.
  • Red vs. Blue: The Halo-map Sidewinder is "a planet made entirely out of ice. It was really fucking cold."
  • CollegeHumor: Satirized in Troopers: The "Swamp Planet" is in fact home to plenty of non-swamp locations, but it was named after the first spot that offworld explorers happened to land in.
    "Fifty years ago Dread Trooper scouts landed in a swamp on our planet and for some reason didn't bother exploring anywhere else! If they'd gone one mile to the left, they would have found some beautiful beach front condos. But they didn't. And now we're the "swamp planet". How do you think that makes me feel?"

    Western Animation 
  • American Dad!: One of the few things known about Roger's home planet is that it's an ice planet. Roger has stated it has an atmosphere roughly 400 degrees colder than Earth, and he himself has shown an immunity to hypothermia.
  • Challenge of the GoBots: Gobotron is a city planet. This is justified in that the planet's biosphere was destroyed ages ago in the inhabitants' civil war, forcing the race to become cyborgs. They then set about salvaging their now-dead home by converting it into a technology-based world.
  • Futurama frequently makes fun of this, and the Planet of Hats, as every world the crew visits seems to have a single defining characteristic; Dr. Zoidberg's home planet of Decapod 10 is all beaches (referred to as "the Mud Planet" by its ambassador), Kif's is all swamp, etc. A notable example is the Nude Beach Planet, the entire planet apparently a coastline.
  • Invader Zim: Invoked. When the Irkens conquer the planet Blorch (home of the Slaughtering Rat People), they simply destroy everything and, on the Tallests' whim, declare it will be rebuilt as a parking garage planet. Presumably this is also the back story of Foodcourtia (a planet of restaurants), Conventia (the conventional hall planet) and Callnowia (which is covered in factories that Irkens can order things from).
  • Robot Chicken: This trope is lampshaded in the second Star Wars parody episode. One sketch features a krayt dragon and his wife as sea serpents in a body of water on Tatooine; when the husband expresses his desire to explore the world beyond, his wife insists that, as far as they know, there's nothing but desert on this planet. The husband then retorts that a Single-Biome Planet is patently ridiculous, describing several planets that happen to exist in the universe as proof of his position and asking what kind of a cruel god would make a planet with a single topographical feature? About a week later his remains are passed by R2-D2 and C-3PO (in a scene taken directly from A New Hope). A water-adapted creature in a vast desert it has no idea how to traverse likely would end up dead in short order.
  • Roughnecks: Starship Troopers Chronicles has a different planet each season.
    • Pluto is an ice planet, of course, while Zephyr four campaigns later is actually a comet.
    • Hydora's an ocean planet for the most part.
    • Tophet is mostly desert with a lot of volcanoes.
    • Tesca is a mix of jungle and swamps, also the only planet in the series where humans don't need pressure suits to breathe.
  • SilverHawks features the Dollare Bank, a money vault planet, and Penal, a prison planet.
  • Skyland is set on a cloud planet.
  • Space Ghost. The episode "Jungle Planet" takes place on one. It's covered with the standard trees, hanging lianas, thick undergrowth and so on.
  • Star Trek: The Animated Series:
    • "The Ambergris Element": The planet Argo's surface is almost completely covered by water, making it a Water Planet. It used to be more like Earth but violent seismic disturbances caused almost all of the land to sink beneath the waves.
    • "The Slaver Weapon", based on Larry Niven's short story "The Soft Weapon". As in the original short story, one of the planets in the Beta Lyrae star system is a "icy little blob of a world", AKA an Ice Planet.
    • "The Jihad": From what we were shown of it, the planet where the Soul of the Skorr was kept appeared to be a Volcano Planet.
  • Transformers:
    • In most series, Cybertron is a city planet. Many series, especially Energon and Cybertron, contain further examples. Of course, a Transformer's requirements for survival are a lot more forgiving than a human's.
    • There's also the planets in Transformers: Cybertron. Velocitron the Speed Planet is a Desert Planet, the Jungle Planet is... well, that... and Gigantion is a City Planet.
    • In Energon and Cybertron, most planets are named "[Biome] Planet," or will have a name but be nicknamed [Biome] Planet, and the nickname will see more use than the name. In addition to the above examples, there's Blizzard Planet and Circuilt Planet (all racecourses. Same hat as Speed Planet, but it's covered with highways, while Speed Planet, as far as depicted onscreen, is all desert.)
    • In both the comic and cartoon humans visit Cybertron and are able to breathe with no problems, although logically there is no reason for there to be an atmosphere breathable for humans. The Beast Machines series seems to offer the suggestion that Cybertron was originally built around a habitable planetoid and that somehow has retained its atmosphere. This was actually the explanation given for the similar world of GoBotron in the Go-Bots cartoon series.
    • Some series have downplayed this and made it surprisingly diverse for a planet made of metal. It often has its own mountains, canyons, and even a sea of rust somehow. It's still made entirely of metal, though.
  • War Planets: Nearly every planet. Admittedly, this was largely because the play-sets were designed first, but the writers have nobody but themselves to blame for the set-up whereby the inhabitants of the desert planet could only survive — on the planet on which they had evolved — by stealing water from the ice planet. This case, however, is justified by virtually every planet being designed and built, not evolved. The Cluster in particular was created as a quartet of interdependent worlds. The adaptation took it a lot further. Bone provides food, Rock provides minerals, and Fire provides energy. They even have world engines inside.
  • Winx Club has two. Andros is a water planet with a few scattered islands spread out. This works out well for the mermaid population that lives there. The Omega Dimension is an ice planet where criminals are sent. Just about the entire planet is frozen, so anyone stuck on it has to rely on magic or scattered gadgets to survive.
  • Young Samson and Goliath: In "The Monsteroids", Samson and Goliath need to get to a Volcano Planet planetoid orbiting the Earth in order to stop the villain based there.

    Real Life 
  • Earth was originally an ocean planet 500 million years ago, when the only life that existed was in the sea, and there was much less land above water than there mountainsnote . It has also been proposed that if tectonic activity stopped before an aging Sun boiled away the oceans, as no plate tectonics means no new mountains, the latter would be eroded away turning Earth into an ocean-covered planet again… at least for a time.
  • Look at Corot-7b, which is even being called "the lava planet".
  • GJ 1214bnote  appears to be a prime candidate for an ocean planet. It's estimated that the ocean on its surface would be roughly three to four thousand miles deep. Yes, the ocean depth is a large percentage of the total radius of the planet. Additionally, because the planet is definitely hotter than boiling point, the ocean doesn't have a defined surface. Instead the atmosphere just gets thicker and thicker as you go down until it becomes as dense as water, which can't compress anymore, meaning the ocean and atmosphere just blend together.
  • Today, Earth is the only aversion in the solar system. In the very early stages of formation, Earth was a lava planet, and if the Giant Impact Hypothesis of the Moon's origin is correct, the Earth and the Moon were balls of magma for a while after the impact. It was probably a kind of ice planet at various points in the Cryogenian era (850-625 million years ago), particularly during the Marinoan Glaciation.note  This hypothesis is called (fittingly) "Snowball Earth". During the Carboniferous period, Earth was covered in lush forests, with just a little ice at the poles. This is how most of our coal reserves were created, by the way. In the Permian and Trias periods, at the apex of the Pangaea, it was largely one huge desert surrounded with one gigantic ocean, with a brief detour to Death World in the wake of the "Great Dying". Later during the Mesozoic Era, in the Jurassic period, Pangaea broke up into continents, leaving place to a warmer, wetter climate, to the point that during the Cretaceous, the so-called "Cretaceous Hot House" made so that all continents were covered in jungles; even at the poles. Nowadays, the closest fit to the above archetypes today would be an Ocean World, as the surface is over 70% water. Finally, as the Sun continues to slowly heat up due to its stellar evolution, and Afro-Eurasia and America are thought to eventually collide within the next 300 million years into "Novopangea/Pangea Ultima/Amasia", Earth will enter one final, extreme Shifting Sand Land era.

    As for the other planets...
    • Venus has an extremely dense atmosphere that distributes heat very efficiently around the planet, so its surface of volcanoes and sulfuric acid is hot enough to melt lead from equator to pole and through the 60-Earth-day night. It could with a bit of engineering be a Cloud Planet, however: Earth atmosphere is a lifting gas on Venus, and conveniently the spot at which its density equals the density of the Venusian atmosphere is also where Venusian temperature and pressure is Earthlike—so if you put a colony in a giant bubble of ordinary Earth air, it would float in a stable manner on Venus in exactly the spot you want it to.
    • Mars is basically a desert world. A very cold desert world—to the point where it is also an ice world: there's lots and lots of ice on Mars, both at the surface (in the polar ice caps, which are predominantly water ice) and below it (much if not most of Mars actually has what amounts to frozen groundwater—albeit frozen groundwater mixed with nasty chemicals — below the surface layer of desert rocks and dust). It also snows dry ice (frozen carbon dioxide) in the winter in the polar regions.
    • Jupiter and Saturn are basically liquid hydrogen planets, with very large hurricanes and possibly rocky cores. Neptune and Uranus are more like "slush planets".
    • Everything else (Mercury, most moons, asteroids, etc.) are mostly airless rocks or ice balls (like Pluto and Charon).
    • Barring intervention, in a few billion years, the increasingly hot Sun will boil off the Earth's oceans, leaving a desert planet. Before, that is, it gets hot enough to turn it into a lava planet again.
    • Some of the moons also count:
      • Moons like Jupiter's Europa's and Saturn's Enceladus have surfaces composed of one giant ice-covered ocean. They are also prime contenders for extraterrestrial life due to this liquid water.
      • If you want a volcano world, look no further than Io. Most moons aren't large enough to retain sufficient internal heat for volcanic activity, but Io is being constantly stretched and crushed by tidal forces from Jupiter's gravity, like a stress-ball made of rock.
      • Titan (Saturn's moon) would be a dark ice planet. It's far from the sun, and the atmosphere has an organic haze that blocks most of the sunlight that does reach itnote . It does have lakes, though — they're just made of liquid methane, and even hydrocarbon snow covering its hightest mountains. Any water on Titan's surfacenote  would likely be called "rocks" by the locals as the melting point of water ice for them would be like hot magma to us. This moon partially subverts this trope too, having the mentioned hydrocarbon lakes on its poles while having extensive dunefields (of ice and hydrocarbons too), the largest of the Solar System, on its equatorial regions. However all share the same orange, murky sky and a temperature of -180°
  • There is a planet made entirely out of diamond. PSR J1719-1438b is also a diamond planet, but it originated as a carbon-oxygen white dwarf, and was then cut down to planetary mass by intense irradiation from its partner (a pulsar).

Alternative Title(s): Single Setting Planet, Single Environment Alien Planet