The Underworld was the realm of Dhuum until he was overthrown by Grenth who became the new God of Death. 250 years ago, the Underworld was attacked by the former god's army of dryders, ghosts, and skeletons. This army had ensnared the Seven Reapers and caused chaos in the Underworld, sending souls to torturous places like the Realm of Torment. To aid in the battle, adventurers were allowed access to the Underworld to assist Grenth's forces. However, some arrived to plunder the Underworld's riches instead.
During this conflict, Dhuum regained strength through any death in the Underworld, and eventually broke free of his chains. Though the Seven Reapers and some mortal allies did eventually manage to re-imprison him, the new bindings were inefficient and Dhuum managed to break free repeatedly from his imprisonment.
In addition to this, the constant traveling between Tyria and the Underworld caused the barrier between the two realms to weaken, allowing Godslost Swamp, as well as other areas, to be overrun with Portals to the Underworld. Throughout Tyria, several creatures from the Underworld could be seen coming from such portals up to the present day. The most common of these are Nightmares, but often imps and fleshreavers are seen as well.
|With the departure of the Six Gods, the gods' realms including the Underworld fell to chaos as demonic entities from the Mists made their way into places such as the Domain of the Lost. In addition to this, Balthazar and Palawa Joko had begun plundering souls from the Underworld in 1330 AE to increase the numbers of the Forged army, adding to the chaos that Grenth's servants struggled to contain. In a bit of irony, the Mad Realm has seen little change beyond rivalry between Mad King Thorn and his son.
In 1330 AE, a new portal to the Underworld appeared, and a Mysterious Spirit reached to mortal adventures with a plea for help to defeat an ancient foe threatening the realm. The foe was eventually sealed but with a great cost, leaving the Hall of Chains under new management.
- Mad King's Realm