The World Of Tysis
The Demongate wars was the second greatest contest in the history of Kasar. It involved over a dozen nations, thousands of soilders, and great, powerful magics. It was so devestating that in addition to the war itself, the aftermath of the Sundering left only 10% of living beings alive.
The war started with the opening of the Demongates, portals that lead from the devastating Abyss at the back of the Iron Marches directly to the Prime Material Plane, unleashing a horde of the Demon Queen’s spawn onto the earth like had never been seen. In all shapes and sizes they escaped into the world, lead by the Demon Queen herself and her Five Children. Very little is left to tell the tale of the actual war itself. From all the fragments left behind, almost the entirety of the Humanoid population of the world joined together to fight the demonic hordes, and still the Gods had to step in to save the world, resulting in the Sundering.
Some people believe that it was in this age that the Feral Races joined sides with the Demon Queen and were forever Tainted. Though they follow the Demon Queen and the Five Children now, none truly know if it was the Demongate wars that first tempted them to the other side.