In the standard cosmology of the Dungeons & Dragons role-playing game, the Windswept Depths of Pandemonium is the Outer plane where Chaotic Evil and Chaotic Neutral petitioners are sent after death. Pandemonium is a large, complex cavern that never ends. Compounding this problem, howling winds drive most of its residents mad. There are few creatures that are native to this plane; those individuals who do live there usually have no choice in the matter. It is one of a number of alignment-based Outer Planes that form part of the standard Dungeons & Dragons (D&D) cosmology, used in the Planescape, Greyhawk and some editions of the Forgotten Realms campaign setting.
Each of the four layers of Pandemonium is successively deeper within the caverns.
Pandesmos is the largest and (relatively) most hospitable of the layers. The headwaters for the Styx are found here.
Cocytus is also known as the "layer of lamentation", for this is where the winds are the strongest.
Cocytus is the location of a number of godly realms, including the god Erythnul's realm of the Fields of Malice, the bugbear deity Hruggek's realm of Hruggekolohk, Cyric's realm of the Shattered Castle.
Phelgethon is the location of a number of godly realms, including the Queen of Air and Darkness's realm of the Unseelie Court, Zeboim's realm of The Maelstrom, and the derro deity Diirinka's realm of Hidden Betrayal.
Agathion mainly contains holes, which double as portals to other planes. This layer is filled with hidden caches of forbidden knowledge and inhuman creatures. It is notable that Orcus's wand was hidden here when he was slain.
- Grubb, Jeff, Bruce R Cordell, and David Noonan. Manual of the Planes (Wizards of the Coast, 2001) ISBN 0-7869-1850-0.
- Larme, John. Dangerous Games? Censorship and "Child Protection"  (2000).
- ↑ Dragon magazine #86, page 32