The Underdark is a subterranean wonderland, a vast and twisted labyrinth where fear reigns. It is the home of horrific monsters that have never seen the light of day. It is here that the dark elf Gromph Baenre, Archmage of Menzoberranzan, casts a foul spell meant to ignite a magical energy that suffuses the Underdark and tears open portals to the demonic Abyss. What steps through surprises even him, and from that moment on, the insanity that pervades the Underdark escalates and threatens to shake the Forgotten Realms to its foundations. Stop the madness before it consumes you! Note for DMs: This adventure is not for the faint of hearted, to run or to play. The module starts with 10 NPCs traveling with the party through the grueling Underdark. This number can grow. The encounters within the book are often incredibly deadly for the characters that would be going through it. This is because the module expects them to run or talk their way through the events, or, in some cases, the module expects them to lose. If your players aren't the kind of party to run, talk, or surrender, do not get this adventure. The module almost requires that you use milestone leveling because the experience provided does not commonly get players to the levels they should be once they get to certain milestones in the story (7th when they leave the underdark, 15th when they face the demon lords.) Good luck and happy questing.

Two hundred years ago, the great dwarf smith Durgeddin the Black built Khundrukar, a hidden stronghold for his war of vengeance against all orckind. For years Durgeddin labored, until the orcs discovered Khundrukar and stormed the citadel, slaying all within. Legends say that Durgeddin's masterful blades and glittering treasures were never found.

The yuan-ti have a long, storied past in the history of Chult. So, if they are to be defeated, we must look back into history. Within the jungles, a number of cities fell into ruin during the Year of Blue Fire. Both the merchant princes and factions believe that if discovered, they likely contain knowledge that’ll prove invaluable in the battles to come. Get looking! A Four-Hour Adventure for 11th – 16th Level Characters

A nest of vampires has claimed a dark forest and the surrounding human towns as its domain. Some of the local residents revere the vampires and serve as daylight guardians and spies. However, most of the townsfolk live in a state of dread. Those townsfolk have finally scavenged enough valuables to hire a band of adventurers to destroy the nest. Pgs. 66-71

The mists have led you deep into Glumpen Swamp to a den of great evil. Within, the unliving son of an unliving god awaits the peace of death that eternally eludes him. Will you grant him his rest, or realize the part he is to play in things to come? Part Seven of Misty Fortunes and Absent Hearts.

Floating Eternally among the endless silver void of the Astral Sea are vast, once-living islands, cast-off flesh of primordials and deities who lost their lives sons past in a great war. Today these colossal outposts bear mute testimony to the date of even the mightiest among us. Pgs. 120-127

Ages ago, the tower stood as a bastion against banditry and marauders. But civilization has long since retreated from this area, and a band of goblin thieves has taken up residence in the ruined tower. Local woodsfolk beg the PCs to rid the place of the bandits before they are victimized again by the goblins of the Broken Tower. Pgs. 18-23

“Den of the Destroyer” is the sequel to “The Lost Mines of Karak,” continuing the unfolding story of the Scales of War adventure path. In this adventure, the PCs are called back to Brindol by a surprising summons. There they learn that a platinum sword they had collected back in "Rescue at Rivenroar" is no mundane item - the blade is sentient! The blade charges the PCs to undertake a dangerous mission to an abandoned githzerai fortress in order to perform a ritual to awaken the blade's true form. Along the way, they must deal with bounty hunters hired by an old enemy (from "Shadow Rifts of Umbraforge"), and confront a vile gang of gnolls terrorizing Elsir Vale. Pgs. 14-54

The Maimed Virulence has come. The future of the Cinnabar Throne and the lives of the denizens of Phlan are in jeopardy. The Cult of the Dragon rejoices, and the Black Fist is powerless to stop them. How will the factions of the city respond to this threat? Can Phlan be saved this time? Part One of Under Emerald Claws. An adventure for 5th-10th level characters.

With allies gained from denizens of the Underdark, the former drown enclave of Szith Morcane is on the precipice of being retaken. During the battle for Szith Morcane, secrets of the drow community are revealed. What will you do with this knowledge, and how will it affect the outcome of the conflict?

As an aspiring hero of Highfolk and the Flanaess, you are asked to come to a feast of small proportions to celebrate your deeds. A home-cooked meal, a warm cozy fire, a hearty tale from an old gnome, a journey deep in the Vesve again, where n one can hear you scream. This is an RPGA competition scenario. Four hours is allocated for its completion.

Bugbear Fight Pit is a mini-adventure with a single main encounter that follow the Bugbear Jeeshank tricking the players into a trap with the challenge of single combat to stop his activities. If the players fall for it, they will be faced with a large number of ranged attacks, and additional clever tactics and use of the terrain. Pgs. 15-17

The Approaching Swarm is a short adventure for four 9th-level characters. The party can consist of any mix of classes, but it should include at least one character that is good in wilderness settings, such as a druid, ranger, or barbarian, and at least one cleric. This scenario should prove a reasonable challenge for characters from 8th to 10th level. The adventure takes place in a swampland that is near a small settlement. The characters attempted to cross back through the swamp to their base of operations. Along the way, they may have got stuck in mud and probably were attacked by a variety of flying insects. They arrive just a bit too late to stop a massacre that occurred back at Crivdall -- the fort is ruined and it appears that almost everyone is dead or missing. Aleretheral, an insane half-orc druid who has mastery of vermin and insects, attacked Crivdall with his insects. He has often infiltrated Crivdall by posing as a harmless elf hermit who lives in the wood. In reality, he wants the settlers destroyed and out of his swamp.

Days ago, a portal to the Elemental Chaos appeared near the PCs’ home city. Since then, it has grown into an enormous sinkhole that periodically belches fire and brimstone. The rip in reality threatens to overwhelm settlements and a nearby river unless someone ventures through and closes it from the other side. Pgs. 102-107

Ten years ago, zombies arose from the foamy sea to take vengeance against the inhabitants of Firewatch Island. Now, they have risen again, just in time to welcome the visiting player characters! Will your heroes manage to escape the island with their lives (to say nothing of their delicious brains)? The PCs have to clear the island and learn its secrets, then defend it against an undead attack and then travel to the bottom of the ocean to seal Dagon's Maw! Pgs. 19-50 Updated to 5th Edition in Ghosts of Saltmarsh

Your PCs are reaching the upper end of the heroic tier. New worlds are opening up to them—they might have already ventured to the Feywild, for example, and made contacts with inhabitants of that magical plane. Now they are ready to take their first steps into the darkness. The Shadowfell awaits... Vandariel, a shadar-kai witch who calls herself the Voice of Pain, is a fanatic devotee of the Raven Queen. She has founded and become the self-proclaimed high priest of a bizarre cult, the Lords of Pain, whose purpose is to bring more fey into the shadow pact with that goddess of death. Although the original shadar-kai entered this pact voluntarily, and the race breeds true, Vandariel is consumed by what she sees as a divine mission to reveal the mystery to all fey—whether they wish it or not. Those who do not come voluntarily to the truth are brought against their will. Dark stalkers move like the night, seeking out and abducting suitable subjects. This Side Trek can serve as an introduction to the dangers of the shadow realm. It works well for PCs who are approaching the paragon tier, since it presents a reasonable challenge for characters of 10th level. It is suitable as a climactic encounter for lowerlevel adventurers, as well. It consists of only two encounters.

Seer has learned of an attempt to intimidate Gralm, an ettin, and his followers into joining Bad Fruul’s army. Hsing comes forth to communicate that she wants you to see if you can find some way to either insure Gralm remains neutral, or to encourage the creature to challenge Bad Fruul to single combat in the hopes that he might wrest control of the hill giant’s forces and turn them back from Parnast.

The isolated tower of the wizard Deros Frist is an example of a typical tsochari incursion into the human world. This short adventure site describes the lair of a tsochar noble that has successfully replaced Frist, a local wizard of some renown. The tsochar Yikk Tasst now pores through the wizard's libraries and spell books, eagerly absorbing all the arcane lore it can. Pgs. 130-134

The Approaching Swarm is a short adventure for four 9th-level characters. The party can consist of any mix of classes, but it should include at least one character that is good in wilderness settings, such as a druid, ranger, or barbarian, and at least one cleric. This scenario should prove a reasonable challenge for characters from 8th to 10th level. The adventure takes place in a swampland that is near a small settlement. A band of rag-tag settlers have carved out a small settlement, called Crivdall, on the edges of a great swamp that is infamous for its terrible creatures. The area is rich with resources, and the settlers have done well hunting and foraging in the swamps. Unbeknownst to them, however, an insane druid has taken notice of their transgressions and wants them to leave. The druid, Aleretheral, is a half-orc with a curious affinity for insects and vermin. The swamp is home to numerous breeds of monstrous insects, some of which the druid has begun to breed to make them even larger and more aggressive. Through his abilities, Aleretheral has set enormous vermin onto the helpless settlers, preying on them as they venture into the swamp. With autumn rapidly coming to a close, the settlers are becoming desperate as more of their numbers are killed by hordes of marauding vermin.

When the priestess of Ehlonna was murdered by a werewolf, the townsfolk of Deepwood lost no time in meting out justice, even though the shapechanger turned out to be a trusted friend and neighbor. But his journal has the town worried. Written in an unknown tongue, it seems to contain important pieces of information. Is it a list of other werewolves? Is the threat to Deepwood over, or has it only just begun? Cries of "Murder!" brought the villagers of Deepwood running to the temple to witness a grisly sight. The priestess of the Temple of Ehlonna lay murdered on the floor, savaged by some vicious beast. Above her body stood a large wolf. Then, before their horrified eyes, the wolf turned into a man -- their friend and neighbor Trammil! The villagers lost no time in giving Trammil the justice he deserved at the end of a rope, even over the objections of those few who thought he deserved a trial. But Trammil's death has not made the villagers feel safe. No one suspected his dark secret until the day of the crime. Could there be others? Can anyone in town be trusted? Only someone who can translate Trammil's journal and fully investigate the murder can solve the mystery.