Agents of the fire giants of Maerimydra, a city in the Underdark, have overtaken the drow outpost of Szith Morcane. The factions seek out adventurers to free the outpost’s leaders for questioning on the giants’ activities. Can you extricate them before it’s too late?

In the city of Waterdeep rests a tavern called the Yawning Portal, named after the gaping pit in its common room. At the bottom of this crumbling shaft is a labyrinthine dungeon shunned by all but the most daring adventurers. Known as Undermountain, this dungeon is the domain of the mad wizard Halaster Blackcloak. Long has the Mad Mage dwelt in these forlorn depths, seeding his lair with monsters, traps, and mysteries—to what end is a constant source of speculation and concern. This adventure picks up where Waterdeep: Dragon Heist leaves off, taking characters of 5th level or higher all the way to 20th level should they explore the entirety of Halaster’s home. Twenty-three levels of Undermountain are detailed herein, along with the subterranean refuge of Skullport. Treasures and secrets abound, but tread with care!

For the most part, the town of Ockney’s Hold has always been a peaceful place—bordering on boring. The most interesting things going on in this frontier mining settlement include the annual livestock fair, the cost of spirits at its various inns, and speculation fueled by those same spirits as to what foul things are being dumped into the river by the ore refinery. Recently, however, the usually placid Baron Reinson has begun to act erratically, ignoring most of his counselors, giving more responsibility to his equally erratic chamberlain, and replacing key figures in Ockney’s Hold with outsiders. With no clear answers as to what might be behind the baron’s strange behavior, his last loyal counselor seeks out a band of adventurers to help. Will these brave heroes be able to get to the bottom of a widening conspiracy? And can they expose the terrible and unseen forces manipulating the baron in time to save Ockney’s Hold? Published by Gamehole Publishing.

Side-Trek adventure When your PCs gain access to the teleport spell, their whole world changes. That simple spell opens up instantaneous, long-distance travel. No more long overland journeys or dangerous retreats through hostile territory. All it takes is clasped hands and a word from the wizard, and poof! The PCs are where they want to go. Except that it isn’t that simple, because teleport isn’t foolproof. The off-target teleports are a matter of scattering your PCs someplace else on the map and forcing them to get their bearings and make the long overland journey anyway. But this Side Trek focuses on the really intriguing column on the teleport chart: “similar area.”

Into the Dragon's Lair takes place in the Forgotten Realms setting, and takes place after the novels The High Road and The Death of a Dragon by Troy Denning. The nation of Cormyr tries to rebuild after the death of King Azoun IV, and seeks the treasure hoard of a dragon to fund these efforts and keep the kingdom from falling into chaos. The player characters must find this treasure before all the other seekers.

The PCs are singled out by happenstance as prophesied heroes who will find and return a great wizard to his family. Once brought back to the the family chateau, they are brought on as paid companions and free to explore the location as they wish. This is a large sandbox style adventure with several plots going on, including assassination, a wedding, false accusations of murder, and many machinations of the nobles to solidify or gain power. Whole this is going on the PCs are dropped into dream sequences where they learn more about the missing wizard and learn how and where to find and free him

An escaped duergar slave stumbles into the village of Elventree. With her she brings a malady that grips the small settlement in a bout of madness that seems unshakable. Can you find the source of the madness and save yourself and the village’s inhabitants? A four-hour adventure for 5th-10th level characters.

Sarkt is an illithid sorcerer. It was cast out of its community for its heretical studies (Sarkt was in fact, lucky to escape alive). It didn't take the cunning creature long to pick up a few thralls and find a new place to live, safe from the murderous intentions of its companions. Sarkt dwells in the subterranean ruins of an ancient shrine to Blibdoolpoolp, the crustacean-headed deity of the kuo-toas. This shrine lies on the fringe of a region controlled by kuo-toas, but since Sarkt's arrival, the fishmen avoid the area. A few unfortunate kuo-toas now serve Sarkt as thralls and maintain the illusion that the shrine serves Blibdoolpoolp. Pgs. 82-88

The Fortress of the Yuan-Ti describes a fortress build into a cliff side and the slave village outside. The Adventure is the third of three but can easily be played by its self. The adventure revolves around the players discovering the dark plot to revive the demon Sertrous and then stopping it. The adventure describes the outside, inside, and hanging towers of the fortress. The adventure concludes in a forth extra-planer tower were you fight the boss. It also includes 4 sidetracks from portals that explain how they get the materials for the ritual. Final part of the Barrow of the Forgotten King series.

The Dungeon of Graves, is nothing more and nothing less than a good, old–fashioned, First Edition dungeon crawl updated for the 5th Edition Roleplaying Game. Very difficult, it should strike fear into the hearts of the most stalwart adventurers. It offers an abundance of traps, tricks, and monsters. We hope that you find this module as fun and exciting as those thousands of players who have ventured into (and not as often out of) the endless caverns and mazes of Rappan Athuk—The Dungeon of Graves. Rappan Athuk is a difficult dungeon. Even the upper dungeon levels should not be attempted by a party of less than six mid-level characters.

A missing mage... A ruthless band of kidnappers... A sinister conspiracy... Night Below, the first epic campaign adventure for the AD&D game, is designed to take the player characters from 1st level to 10th level and beyond. The PCs start as beginning adventures on a routine courier mission who soon become drawn into combating a sinister plot that menaces the pleasant land of Haranshire.

The players get more than they bargain for when answering a night-time call for assistance from a mutual friend. Can they escape the githyanki prison known as the Crucible and find their way home from the Astral Plane? Designed for characters of 5th to 9th level, the Crucible can be played as a standalone one shot adventure, or as the first in a four part series of connected one shots that see the party fight their way to hell and back.

Avalanches are hardly news in Icewind Dale. The frequency to which it is occurring, however, defies logic. What is the cause of this strange phenomenon? What horrors could have unleashed such force of nature with such reckless abandon? Horror Beneath the Frost is a slasher horror adventure set in Icewind Dale, deep within the Reghed Glacier. It features yetis, mind flayers and a boneclaw! The adventure is designed to be easily dropped into: • Any homebrew campaign where avalanches occur. • Icewind Dale: Rime of the Frostmaiden campaign. • Plague of Ancients Seasonal Campaign for the Adventurers League (AL) organized play program. Inside you will find: • A slasher horror adventure optimized for five characters with an average party level (APL) of 8. • Scaling advice for three to seven 5th to 10th level characters. • A printer-friendly version of the adventure. • 4 digital maps importable to Roll20, Foundry VTT and your VTT of choice. Includes gridded, grid-less and printer friendly versions of the maps. • D&D Adventurers League compatible adventure (Dungeon Seed: This Seems Familiar | DC-POA-JL01)

A prescription for evil. The king's question is, "Do you make house calls?" To Cure a Kingdom is an adventure for ADnD, set in and around a small city state that is suffering from a deadly disease of magical origin. The party must set out into the swamps in search of a cure. Features monsters with psychic powers as well as extra-dimensional travel. Adventure may be connected to further Underdark adventures with relative ease. Pgs. 8-25

A terrible and unnatural fear has come over the people of Waterdeep. In a matter of weeks, dozens of people are missing, and more disappear each night. Rumors tell of curses, phantasms, demons, and possession. In truth, these are the victims of tiny parasitic brain maggots unleashed by the illithid dragon called Brainstealer. The fate of its victims fall on your shoulders, as you discover his lair and prepare to raid it.

Recent earthquakes have unearthed a small section of a lost dwarven fortress. The dwarves are long gone, but rumors suggest they might have left treasure or weapons behind. After a journey into the Underdark, the characters find a barred iron door bearing the names of several ancient dwarven clans. Pgs. 90-95

You stand before the Sha’sal Khou elders as the most diverse gith hunting party ever assembled. Are you powerful enough to keep the mind flayers from enslaving your people once again? You’ll have to race across the planes to find out. A six to eight‐hour adventure for six players.

This adventure is written with the intent that it takes place in the subterranean world called the Underdark in the world of Forgotten Realms, although it may be placed in other settings. Within the Underdark, Cyrog's lair can be placed anywhere though it is stated to be thousands of miles east of Gravenhollow. If you are running Out of the Abyss, you may want to have your players see the vision Cyrog Lives! Hail Orcus! (OOTA, 158). Additionally, it is recommended that this adventure be used for a party of 4 to 6 players, level 9 to 12. While merely hinted at through visions in Out of the Abyss, Orcus is roaming the Underdark unchallenged with an army of mind flayers at his disposal. Cyrog, the elder brain of a mind flayer colony in the Underdark has died. The demon lord Orcus has reanimated and taken control of it. The hive of mind flayers is now bent to Orcus's will through Cyrog as he strives to make all life in the multiverse into a vast undead horde under his control. The adventurers are contacted by a patron who gives them a special item (such as brain worms) to suppress their brain waves and make it possible to infiltrate the Cyrog's Lair without immediate detection. The adventurers must defeat or otherwise subdue mind flayers and a few guards, override the elder brain's mechanical defense system, and slay Cyrog.

Amid the gales and snowy Earthspur Mountains, the tumbling ruins of the ancient Tempest Mage's tower brood over the village of Windy Valley. When a kidnapper flees into the ruins, it's up to a group of adventurers to apprehend the rogue and save his victim from the vault below. Published by Cold Iron Conventions and Draxtar Games.

4e's 'Expedition to the Barrier Peaks'... on the moon! Using the technology of a lost civilisation, illithids have been cloning influential people. The PCs must navigate a strange sci-fi environment and defeat the illithids. Additional items & malfunction rules can be found in Dragon #410 & Gamma World 7e.