The world has 5 major landmasses: Blantyrre, Oreina, Altazia, Miasina and Hsan.
Altazia: The focus of the story. This is where Eldemar and the rest of the Splinter States are located. The south is firmly dominated by humans, while the northern forests and mountain ranges are still monster-infested wilderness. Native human societies of Altazia were conquered by Ikosian refugees coming from Miasina in the wake of the Cataclysm, adopting their magic and many of their cultural customs in the process.
Miasina: The place where the Ikosian Empire rose and fell. Roughly speaking, Miasina can be divided into the northern part (Xlotic) and the southern part (Koth). In the wake of the Cataclysm, the northern part of Miasina has been transformed into a giant desert. The south has always been largely covered in jungle. Miasina was once the center of the human civilization, but the fall of Ikosia and the creation of the Xlotic Desert has greatly reduced its global importance.
Blantyrre: The biggest continent, but also the one without significant human presence: the majority of the continent is covered with a thick jungle crawling with dangerous monsters and non-human races. The most advanced species (technologically and magically) are lizardmen, whose city-states and small kingdoms dot the entire continent.
Hsan: The third and last continent inhabited by humans. Hsan is rather distant from Altazia and Miasina, and has been isolationist and stagnant ever since the Ikosian Empire (its main trading partner) fell. Outsiders view it as very mysterious place, and all sort of wild tales are told about it.
Oreina: Located near the south pole and mostly covered in ice, Oreina is both very inhospitable and very far from existing human civilization centers. There are no native humans there, and no reason for any to settle on its shores either. Very little is known about this continent.
You can find a WIP version of the world map here.