Anthology of Ideas

The world of Arathria is composed of two Pangaea like continents named Arath and Ria — imaginative huh. The two continents are far enough apart that no non technological species can cross from one to another. Because of this the two continents have vastly different species; while Ria’s intelligent species are mainly humanoid, Arath’s main intelligent species range from non humanoid to vaguely humanoid. The continents also have very different geography and weather and this contributes to the difference in species.
Ria is a fairly fertile land with a large central desert surrounded by a nearly impassable mountain range. The mountains are not the tallest landforms in the world, but they have an extremely frigid environment combined with frequent volcanic activity. Along the coast the land ranges from rain forest in the north to marshlands in the south. However between the coast and the desert the land is perfect for agriculture.