Eternally does the Lord of Nessus scheme, and his designs are for all eternity; In the pit of Hell do the devils teem round his throne, and his reign is unchallenged; By the eight Dark Ones is he held supreme, and his name (speak it not!) is Asmodeus. - From "The Canticle of Thumis," 142:15 To some, justice is more important than glory, duty is more important than desire, and goodness is more important than life. The great paladin Klysandral was such a man. But even the sleep of death, at the end of a long lifetime spent battling evil, did not bring peace to Klysandral. During his funeral, the entire Temple of Neheod was dragged by terrible magic into the Nine Hells, along with the soul of Klysandral and scores of living mourners! What unearthly motive could be behind this tragedy? Only the bravest, strongest, and most resolute heroes will have the mettle to find the answer. Along the way, they will meet the enigmatic wizard Emirikil the Chaotic, sail aboard the fiendish ship Demonwing, and finally face the horrific minions and overwhelming terrors of Hell itself. Only the path of light can lead the bravest of the brave into perdition and safely out again. Step wisely, and walk in justice.

A Conspiracy of Doors is a Dungeons & Dragons adventure for five player characters of 11th level. It can serve as an introduction to Sigil, the City of Doors, as well as a group of adventurers' first taste of action at the paragon tier.

SIGIL'S BEEN AT PEACE FOR OVER 600 YEARS. ALL GOOD THINGS COME TO AN END. Six centuries ago, events surrounding the Great Upheaval imposed an uneasy peace in the City of Doors. Since that time, the 15 factions have quietly conducted their philosophical battle for the hearts and minds of all Cagers - and always stopped short of all-out war. But now tensions are flaring, tempers are rising, and the Cage is about to explode into conflict! Faction War is a 128-page adventure that tracks the war from its nefarious origins through its bitter battles to its ultimate resolution and beyond - and puts the future of Sigil in the hands of the player characters. This book reveals secrets, unravels musteries, brings long-simmering plots to ahead, and marks the beginning of a new era for the City of Doors. It also features the following: - New details on Sigil's wards, personalities, and politics - Adventures that draw the player characters into the heart of the struggle and toward the secrets surrounding the war's beginning and ultimate end - Extensive notes on the aftermath of the conflict - A detailed Timeline of the war, including additional events that the DM may use expand to the adventure Faction War builds on story elements first explored in the PLANESCAPE accessories In the Cage, Factol's Manifesto, and Uncaged: Faces of Sigil. Familiarity with those products is recommended but not required. TSR 2629

Looking for a little extra jink and maybe some excitement? It seems the Doomguard lost track of their coveted ship of chaos. It's flying about the abyss, driving the local tanar'ri even more barmy than they already are. Several factions want to get their hands on the Doomguard's stake, so there's bound to be a few job offers for bloods looking for a little action. Every sod's got a tale to tell about the abyss—it's the sinkhole of the multiverse, after all, peopled with every kind of scum a body can imagine and a few he can't. Never been there? Well, there's no time like the present. *** "In the Abyss" is a Planescape adventure for a party of four to six characters of levels 8 to 10. A simple errand to salvage the lost ship of chaos allows the player characters their first opportunity to explore the most notorious plane of them all. Of course, complications are as inevitable as the tanar'ri! The Planescape Campaign Setting and Planes of Chaos boxed sets, as well as the Planescape Monstrous Compendium Appendix, are required to run this adventure. TSR 2605

When the players get teleported to the plane of the Beastlands, they meet with an intelligent petitioner in the form of a Dog named Reith. Eventually Reith will lead the players to a human; an eagle winged boy by the name of Addler. Addler already knows a way out of the Beastlands, but doesn’t want the players to know because the key is his body and if the petitioners knew he could leave, they wouldn’t like him anymore. Not being the best at planning, he’ll be coerced into giving the players a map to the petitioner that helped him find the portal (A snake named Siy). After passing through some small adventures in the beastlands, the players will meet with Siy and learn about Addlers portal. From here, the players will travel back to Addler and confront him.

A succubus with an unquenchable lust for power is turning the Cage into a ripping madhouse. And the Lady of Pain ain't pleased. . . . Something's foul in Sigil, berk. A mad slasher prowls the streets, leaving a trail of bloody clues in his wake. Leatherheads boldly court the Lady of Pain, longing for the sharp touch of her shadow. Even the silent dabus're acting barmy, a sure sign that the Lady herself is uneasy. Are these strange events tied to a madhouse full of spell-touched sods ready to slip the bonds of mortality? A curious body'd better step carefully. After all, the dead-book's full of fools who wished for power?or got in the way of another berk's wish. Harbinger House is a Planescape adventure for four to six characters of 4th to 7th levels. From Sigil to the Outlands and back again, the heroes must piece together a puzzle that could shake the Cage to its foundations. A dark secret of the multiverse wails to be discovered in the lunatic asylum called Harbinger House, and only the player characters can shape its power-for good or ill. TSR 2614

A Planescape adventure for 4-7 PCs of levels 9-12 (about 60 total levels). While the module begins in the planar city of Sigil, most of the action takes place in Vudra, a layer of the Abyss. The PCs start in Sigil, tasked to find a vanished brother, and the trail leads to Vudra where the layers demonic ruler gathers magical blades for a terrible vengeance plot. Pgs. 32-58

Four doors of mystery appear in the Cage. They lead to four adventures, if a basher has the dark of them. "These aren't doors in the traditional sense, cutter, but they're portals just the same. They appear for a short time every 500 years, popping up in different parts of Sigil. Each hides a mystery that's waiting to be solved, and together they just might hold the key to a secret of the multiverse. All a body's got to do is tumble to the right keys, open the doors, and face down the Unknown." - Estavan, merchant lord Doors to the Unknown is a collection of four Planescape adventures that can be played separately or as a mini-campaign. When four doors appear in the Cage, the barmies crawl out of the shadows, and the heroes get drawn into events that could have consequences for the entire multiverse. Each door leads to a different plane and a different deadly challenge for the player characters. Together they offer a way to stop an ancient menace before it strikes again.

We get it. Factions are an integral part of D&D, but it's not always clear how to use them in your campaigns. Luckily, Factions of Sigil has you covered for each of the twelve main factions found across Sigil and the Outlands! This supplement goes over the various rules and lore around the primary factions found in Sigil and the Outlands, making it easy for any new or veteran DMs to integrate the factions more into the core stories being told, and making them feel more useful for the players that choose to join. In this adventure, the Mind's Eye of Sigil requests the characters travel to a secretive dome created by former member Skaldon, and follow his path to enlightenment.

We get it. Factions are an integral part of D&D, but it's not always clear how to use them in your campaigns. Luckily, Factions of Sigil has you covered for each of the twelve main factions found across Sigil and the Outlands! This supplement goes over the various rules and lore around the primary factions found in Sigil and the Outlands, making it easy for any new or veteran DMs to integrate the factions more into the core stories being told, and making them feel more useful for the players that choose to join. This adventure sees the characters allied with the Fraternity of Order in Sigil and sent to the gate town of Automata to solve a vicious spree of murders.

We get it. Factions are an integral part of D&D, but it's not always clear how to use them in your campaigns. Luckily, Factions of Sigil has you covered for each of the twelve main factions found across Sigil and the Outlands! This supplement goes over the various rules and lore around the primary factions found in Sigil and the Outlands, making it easy for any new or veteran DMs to integrate the factions more into the core stories being told, and making them feel more useful for the players that choose to join. Complaints have been made to the Transcendent Order of a Slaad and its Bladeling allies that are disturbing the peace in Sigil, who in turn have tasked the characters to restore a sense of tranquility to the old Mastervale Manor.

We get it. Factions are an integral part of D&D, but it's not always clear how to use them in your campaigns. Luckily, Factions of Sigil has you covered for each of the twelve main factions found across Sigil and the Outlands! This supplement goes over the various rules and lore around the primary factions found in Sigil and the Outlands, making it easy for any new or veteran DMs to integrate the factions more into the core stories being told, and making them feel more useful for the players that choose to join. Mind Flayers are working to escape justice in Sigil, and so the Mercykillers have asked the characters to step in and kill them.

In which the Many seek the One, and the Heroes must retrieve a Sword lost amid myriad Threats to the Flesh. Chapter II of the "Well of Worlds" adventure anthology.

Wherein the Heroes step through a Portal to find themselves in a Location Most Foul, from which they make their Entrance into the infinite Planes of Adventure. Chapter I of the "Well of Worlds" adventure anthology.

We get it. Factions are an integral part of D&D, but it's not always clear how to use them in your campaigns. Luckily, Factions of Sigil has you covered for each of the twelve main factions found across Sigil and the Outlands! This supplement goes over the various rules and lore around the primary factions found in Sigil and the Outlands, making it easy for any new or veteran DMs to integrate the factions more into the core stories being told, and making them feel more useful for the players that choose to join. This adventure sees the characters ally with the Athar of Sigil to raid the Abbey of the Iron Star and destroy the devils within who are attempting to bring Asmodeus to Sigil.

We get it. Factions are an integral part of D&D, but it's not always clear how to use them in your campaigns. Luckily, Factions of Sigil has you covered for each of the twelve main factions found across Sigil and the Outlands! This supplement goes over the various rules and lore around the primary factions found in Sigil and the Outlands, making it easy for any new or veteran DMs to integrate the factions more into the core stories being told, and making them feel more useful for the players that choose to join. This adventure sees the characters allied with the Fated of Sigil, and tasked to travel to the titular Tower of Pillars to conduct a heist from a Time Dragon.

We get it. Factions are an integral part of D&D, but it's not always clear how to use them in your campaigns. Luckily, Factions of Sigil has you covered for each of the twelve main factions found across Sigil and the Outlands! This supplement goes over the various rules and lore around the primary factions found in Sigil and the Outlands, making it easy for any new or veteran DMs to integrate the factions more into the core stories being told, and making them feel more useful for the players that choose to join. In this adventure, the characters ally themselves with the Doomguard of Sigil and are sent to the Tomb of Bardarock in the Outlands, a former member turned lich who must be stopped.

Silently, ponderously, they float through the Astral Plane, mammoth isles of rock adrift in an endless sea of silver. Once they were gods. Now they're little more than debris, petrified husks of fading belief and forgotten prayer. Yet for many, their memories linger, their dreams live on - and for some, those dreams are terrifying nightmares of vengeance, and conquest, and death. n the first, the heroes are drawn into an epic quest to uncover the secrest behind the retuns of an infamous AD&D villain long thought dead. In the second, the city of Sigil threatens to explode in a faction war for control of an old church and a mysterious force lurking within it. Dead Gods also features a Monstrous Compendium entry for a brand new fiend, full color illustrations to bring scenes alive for players, and a poster sheet of maps for the Dungeon Master. Dead Gods builds on story elements first explored in the Planescape adventure anthology The Great Modron March, though that product is not required to use this one.

Doomguard factioneers steal an ancient relic from the church of Fharlanghan as part of an apocalyptic plot involving the Harbinger House, and a group of Clueless adventurers chase them into Sigil on their quest to recover it. Celestian's Compass is a free one-shot adventure that was released for Free RPG Day 2017.

We get it. Factions are an integral part of D&D, but it's not always clear how to use them in your campaigns. Luckily, Factions of Sigil has you covered for each of the twelve main factions found across Sigil and the Outlands! This supplement goes over the various rules and lore around the primary factions found in Sigil and the Outlands, making it easy for any new or veteran DMs to integrate the factions more into the core stories being told, and making them feel more useful for the players that choose to join. In this adventure, the Heralds of Dust in Sigil ask the characters to investigate and end the disappearances in secret crypts under Sigil.