Azeroth

From the introduction:

Welcome to Azeroth, a land of magic and endless war. A world where dragons soar and demons prowl the night. The two major factions, The Horde and The Alliance, battle for, well honestly no one knows anymore, they just like killing one another. But don’t let the magical nature of this world fool you, for there is evil lurking everywhere, even in the heart of the planet itself. The Old Gods, the Twilight Cult, the Scourge, the Burning Legion, the Cult of the Damned, and many, many other threats abound on Azeroth.