Sphaera is an Earthlike world with three major continents: Sikano (south), Arokha (northwest), and Eren (northeast). Thalassaterria, the massive island chain to the northwest of Sikano, is sometimes counted as a separate continent due to its size and tectonic characteristics. Sphaera hosts a wide range of nations and geopolitical powers, from the rigid borders of the Tyerian Empires to the loosely affiliated tribes of kawataro in the southern hemisphere.