Collapse of the Inferno

The infernal plane was destroyed by the Planetary knights those that have made oaths and sided with the Outsiders to aid them in their plans. The knights invaded the nine hells killing those demons, devils, and archfiends that were against them and were replaced by the knights. After they succeeded in their goal of killing Asmodeus it was only a matter of time until the Forsaken gods leaked into the Infernal plane and destroyed it converting it to more like the far-realm. Those devils, demons, and archfiends that remain now collide with the material world. Though these evil beings were defeated and most perished, their armies now enslave the mortal races in some parts of the material plane. Dark cathedrals and fortresses, as well as strange warped structures of torture and blood litter the world. The leaderless demons and evils form kingdoms and tribes, maiming, killing, plundering, and destroying as they please.