What would the Earth look like if it spun backwards. Or if all of the land were replaced by water? How could the Earth be placed into a permanent ice age, and what would the climate be like?
Planetcopia answers all of these questions. It really defies definition, but...
In essence, it's a series of tours of hypothetical worlds, with special focus placed on climate and geography, filled with lush descriptions of alien landscapes, all very lovingly hand-crafted on globes, with numerous drawings of landscapes, flora and features. All of this is created by Chris Wayan, and is regularly updated with new content.
The worlds are grouped in several categories, which include:
TiltTilted, alternate earths
- Seapole: An Earth where both poles are on sea (off the coasts of Brazil and Japan, respectively).
- Shiveria: Both poles on land (in South America and Asia), which locks Earth in a permanent Ice Age.
- Turnovia: Earth simply turned 180°.
- Jaredia: Inspired by Jared Diamond's Guns, Germs, and Steel, an Earth with the largest possible east-west continent extensionnote .
FuturesEarth, Mars and Venus as they may be 1000 years in the future
- Dubya: Earth if the atmospheric CO2 concentration doubled.
- Mars Reborn: A Terraformed Mars, although not fully Earth-like.
- Venus Unveiled: A terraformed Venus.
Biosphere VariationsMore alien worlds than alternate Earths
- Serrana: Midway between Earth and Mars.
- Lyr & Oisin: Lyr is a planet designed to be utterly un-Earthlike (7 times more massive, near-completely oceanic, fainter sun, eccentric orbit), Oisin is its Europa-like moon.
- Capsica: A hot world, averaging 50° C (122° F).
- Pegasia: Earth-like moon of a Jovian world, with many intelligent species (there was a contest for user-submitted species).
- Tharn: An extremely dry (1/500th Earth's water) but still inhabitable moon.
CapricesEarths with more...esoteric changes
- Siphonia: Earth with most of its oceans siphoned away.
- Inversia: Earth with an inverted height scale — turning the continents into oceans and vice versa.
- Abyssia: Starts from Inversia, but has the same amount of water as normal Earth (Inversia has much less). The result has very little exposed land.
- Accidentally Correct Writing: Multiple studies have shown the Turnovia climate predictions to be accurate.
- Alien Sky: Lovingly described around every world, every time it's different from earth.
- Special points go to Lyr, for how the light of the sun curves around the planet, and for the iceball Oisin in the sky.
- Alternate World Map: The original point, really.
- Death World: Averted; all of the inhabited hypothetical worlds are more pleasant than this one. At least, if you subscribe to liberal-leaning anarcho-primitivism.
- Desert Planet: Tharn, Mars and Serrana. Largely downplayed and original, because italics: water spreads out.
- Eternal Sexual Freedom: Most of his cultures.
- Fan Disservice: The furry drawings. This makes far too many otherwise-interesting pages NSFW; interesting pages on geography and flora interrupted with what amounts to porn.
- Ice Planet: Oisin. Deconstructed, as it's a moon with life in its oceans.
- Forest Planet: Lyr...mostly. Except for the rare grassland. And desert.
- Lady Land: No obviously male pictures are included.
- No Nudity Taboo: Somehow, every female creature Wayan populates his worlds with. Makes far too many pages NSFW.
- Ocean World: Lyr and Abyssia. Downplayed, because both have substantial land masses. Subverted with Seapole and Dubya; they're only the Earth with all of ice caps melted.
- Single-Biome Planet: Averted. Every world has multiple climate zones; Lyr has more than Earth!
- Science Marches On: In order to make Venus habitable, the rotation was sped up. However, according to recent climate research, this would actually make Venus less habitable.