Alterraden is an alternate Earth, which is part of where the name comes from: Alter Eden. However, it is more than just the lands bathed in sunlight - it also incorporates other Realms that range from pure light to pure dark. If you have ever played Dungeons and Dragons' Planescape settings, you will probably see the inspiration for my world. While the denizens of the lower Realms may not interact much with the Sunlits, the Shaida Courts of Light, or the Nazani, they do interact with the Melkreschen and the Shaida Courts of Darkness.
I've tried to make this your one-stop spot to gain an overview of each of the known Realms as they appear in my writing.
The Nazani Realm
The Melkreschen Realm
The Shaida Courts
The Sunlit Realm