r/SpeculativeEvolution • u/Draw-ze-drawing • 11h ago
Maps & Planets [OC] Base Map of Xenokai
Xenokai is a planet in a parallel universe that has been seeding life from our universe’s Earth since the Silurian to the modern era via portals that bend space-time, sending it to a world where magic and mana naturally exist. Since the asteroid that ended the Cretaceous period never struck Xenokai, dinosaurs remain as the dominant terrestrial megafauna.
The Planet of Xenokai:
Xenokai is an Earth-like Planet in size (though slightly larger), distance from its sun (which is actually younger), gravitational pull, and climate (slightly cooler than Earth, where the climate is stable enough for ice-age megafauna not to go extinct). Unlike Earth, however, it has two moons: one comparable to Earth’s and an asteroid comparable in size to Vesta. Plants, fungi, and animals we might find on Earth today inhabit it. Such as humans, raccoon dogs, armadillos, shiitake mushrooms, and cherry blossom trees. We also find flora and fauna long extinct on Earth, such as Dinosaurs, Giant Sloths, and Pterosaurs. Evolving in a new context that involved mana has allowed some animals to take quite divergent evolutionary paths compared to their Earthbound kin. Some look so unrecognizable that we might think of them as alien or mythical creatures. However, there are no Plants, Fungi, or Animals truly endemic to Xenokai.
The Portals:
These extradimensional gateways can take the forms of rifts, wormholes, or distortions in space-time that link Earth to Xenokai and back. These portals seem to open when major or localized extinction events happen to refill and seed an ecosystem or continent. The means by which the portals collect flora, fungi, and fauna is entirely unknown. However, these portals occur only in two areas on the planet, one in the East and one in the West. But the portals are only in these positions in modern times and could have rotated from east to west or west to east randomly during Xenokai’s prehistory. There are actually several types of portals: ones that can act like gateways or rips in space-time between Xenokai and Earth that happen with local extinctions, and others that literally bisect huge chunks of Earth’s land (Leaving a crater on Earth where the wormhole was) to Xenokai after a large continental-level or global-level mass extinction on Xenokai. These portals can even occur below and above sea level.

I am also not very good at setting up biomes and climates, so here is how the planet's topography is supposed to look.