The Zhentarim ask the party to investigate what happened in one their most important underdark outposts. If the party accepts, they'll have to deal with maddening darkness, grimlocks, an insane kenku assassin and unpredictable mixtures of potions. A short, fun dungeon romp that is easily adapted to other settings and other patrons. The combination of utter darkness and a villain based on sound makes for fun shenanigans on the side of the DM. Feasible as a one shot for an efficient party. Two tendays ago, Zhentarim agents were to transport a shipment of rare potions between their Underdark outpost and the surface world. The shipment has yet to arrive, and the outpost is not responding to any sending spells. Growing worried, the outpost’s overseer sends a group of hireswords to investigate and return it to Zhentarim hands. This particular adventure deals with the delusions of madness of Fraz Urb'luu. It also features Muurmic, the mad kenku first described in the December 2015 issue of Dragon+.

A mind flayer has called for a massive conference of monsters in the Underdark beneath Hillsfar. Trolls, umber hulks, demons, and more have answered the illithid's call. To infiltrate this gruesome menagerie, you must embrace the monster within yourself.

Save the village of Millvein! Prevent a war with the drow! In this 3-4 hour adventure for 4-5 characters of 2nd level, travel to a small chitine lair to prevent them from destroying the small village of Millvein and inciting a war between the surface and the drow. Includes: A 3-4 hour adventure for 2nd level characters Map of the village of Millvein 2 DM maps Stat blocks for all monsters the players might encounter. See where the adventure began in Into the Underdark - Part 1 A Family Affair The adventure continues in Into the Underdark - Part 3 They Call It A Mine

Dark Water Trap is a mini-adventure that has a single encounter that involves Duergar using darkness and anti-darkvision to get the player to fall into a Pit trap full of water, so that the party will drown. The encounter either works as a standalone (Ie. the Duergar have been causing trouble), or as a part of a larger adventure or dungeon, Duegar or otherwise. Pgs. 26-27

Under the Flooded Forest grows a toxic maze of magical fungi called the Nidus. From this horrid realm a cult has struck a terrible blow against the wood elves struggling to regrow the trees in the forsaken swamp of the Flooded Forest. The elves, on the brink of extinction, need the adventurers to navigate this deadly labyrinth and recover a precious object. But the tunnels here crawl with spore-laden beasts and demons, and the very air itself is poisonous.

A band of evil fey, led by a corrupt bralani, has raided an eladrin city and kidnapped several respected elders. The fomorian king claims the rogues don’t act on his behalf, but the eladrin city threatens the fomorians all the same. To prevent war, the PCs travel through the Underdark of the Feywild—a wondrous place filled with the beautiful and the horrifying—in search of the evil fey and their captives. Pgs. 96-101

"The Aboleth's Grotto" is a nihileth lair suitable for four 10th-level characters. The adventure can be completed in one session. The small town of Springwell harbors a secret that almost nobody knows about, and those who do conveniently ignore: it sights right over an unoccupied settlement of the deep caverns of the underworld.

The Case of the Kidnapped Cartographer A dear friend of the party has gone missing; Boddyknock the gnome cartographer, supplier of maps and charting equipment. Can the party solve the mystery of his disappearance? Do they have the bravery to delve deep to recover their lost ally? What horrors will they uncover in the cavernous expanse beneath their feet?

Originally designed as a convention module, this adventure sends the heroes into the underdark to do battle against the mysterious denizens of the deep! A drow housemistress commissions the characters to acquire a mysterious weapon known to be in the hands of her dark elf enemies. Locating, identifying, and acquiring the magical weapon leads the heroes on a great trek across the underdeep, where they must battle svirfneblin, a powerful lich, and enemy drow. This adventure us specifically designed for play by drow characters, but can be used with any adventuring party. Pregenerated drow characters are included.

In this small 20 page adventure module, centered around an archaeological dig, revisit Bull Creek and find out the secret behind what really lies in the hero Vertrixx Mazilaxx's sarcophagus. To do so, you'll have to meet up with master archaeologist Geranimus to delve deep into the ground. On the surface, politics boil and tensions between species are high. Below, secrets are to be uncovered. Can your party find the truth? Find out in Old Bones. Old Bones- a 5e SRD adventure for levels 4, 6 and 8. In James Grammaticus' Dungeon Short series, James explores fantasy worlds and settings in short bite-sized one or two shot adventures that be used on their own, can spring off into a larger campaign, or can be used as a side-adventure in a campaign.

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.

A powerful new narcotic is making its way through the Spine of the World. Behind it is a secret that could change everything! Explore a lost city and discover the secrets hidden by the gods themselves. (TW: some drug use and the possibility for players to use drugs)

As a member of a bold party of adventurers, you and your associates have trekked far into what seems to be a whole underworld of subterranean tunnels -- arteries connecting endless caves and caverns which honeycomb the foundations of the lands beneath the sun. Your expedition has dogged the heels of the Dark Elves who caused great woe and then fled underground. This module can be played alone, as the conclusion to module D1 & D2: "Descent into the Depths of the Earth," or as the third module in a series that forms a special extended adventure (G1-G3: "Against the Giants"; D1-D2: "Descent into the Depths"; and Q1: "Queen of the Demonweb Pits"). TSR 9021

The kuo-toa are a piscine race with a psychic affliction that makes them behave erratically and invent gods when feeling threatened. That same affliction gives them the power to bring those gods to life. Blibdoolpoolp is the most widely worshipped, and thus most powerful, of their gods. Blibdoolpoolp views the kuo-toa as her children despite having been born after them. Like all good mothers, she nurtures and protects. One of her chief concerns is understanding the kuo-toa’s psychic affliction, which causes them to undermine themselves whenever they strive for greatness. She discovers that a corrupted elder brain deep in the Underdark has a connection to the race; though the connection gives them psychic powers, it also turns them into powerless thralls, explaining their self destructive behaviors. Constrained by the same leash on her children, Blibdoolpoolp seeks adventurers to destroy the elder brain. Its death would free the kuo-toa, but potentially at great cost: if the kuo-toa lose their powers, will Blibdoolpoolp die?

The final confrontation with the giant, King Snurre, and the entry of mighty adventurers into the caverns under his stronghold (DUNGEON MODULE G3, HALL OF THE FIRE GIANT KING) discovered the Dark Elves, the Drow, had instigated the giant alliance and its warfare upon mankind and its allied races. This module contains background information, a large-scale referee's map with a matching partial map for players, referee's notes, special exploration and encounter pieces, a large map detailing a cavern area, encounter and map matrix keys, and an additional section pertaining to a unique new creature for use with this module and the game as a whole. A complete setting for play of ADVANCED DUNGEONS & DRAGONS is contained herein. This module can be played alone, as the first part of a series of three modules (with SHRINE OF THE KUO-TOA, D2, and VAULT OF THE DROW, D3), or as the fourth part of a continuing series of modules which form a special progressive campaign scenario (DUNGEON MODULES G1, G2, G3, D1, D2, D3, and Q1, (QUEEN OF THE DEMONWEB PITS). TSR 9019

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.

Part 3 of the Shackled City Adventure Path "Wherein a tribe of the Sea Mother's children suffer for sparing the life of a mad prisoner they probably should have eaten." Synopsis: The adventure begins with an Umber Hulk attack in the middle of the city. The fame gained by assisting during the attack allows them to gain the notice of a representative of Davked Splintershield. The group is asked to rescue Zenith Splintershield from a Kuo-Toan temple in the Underdark. But to find it, they have to visit Crazy Jared to locate an entrance to it. Upon journeying to Crazy Jared's, they fight Hookface's offspring. After more travelling, they are able to descend into the Underdark. Once they find the Kuo-Toan temple, they must fight through many hard challenges, only to realize that Zenith is not a prisoner, but instead is a prophet. Zenith does not go willingly, and so must be captured. Pgs. 28-61

In this adventure, the Lord Commander of the Sharn Watch hires the heroes to investigate the murder of an actress. The investigation quickly spirals into a bloody dispute involving a dead wizard’s spell-book, political rivalries, and secrets that might foment war among the Five Nations. Pgs. 1-37

If absolute power corrupts absolutely, Matron Maelora best beware; her plans for total domination of the Underworld are already close to satisfactory completion, while attacks on the Upperworld have become increasingly successful. The other power-hungry drow families of Holoth may despise her but they know a true leader when they see one, and House Gullion has been revealed as the family to lead them all on the path to glory. With the entire Underworld in chaos and the Spider Goddess regularly communing with her chosen Matron, far greater dreams than mere regional conquest are within the grasp of the drow, as Maelora prepares her grand dark elf army for victory! With other mystical allies standing firm with the Matron, other Underworld races beneath her heel or cowering behind fortified walls, and every drow ready to play their part when she gives the word, what could possibly stop her from achieving her final triumph and fulfilling her destiny? But even the greatest of plans has a flaw if you look hard enough, and a party of stout heart and strong resolve can make a difference. At first, such a party may well believe it is on a smaller adventure, perhaps to win a few baubles or some small acclaim by rescuing a few kidnapped villagers. Soon, however, those adventurers will realise that much more is at stake, and that they are the ones who will need to make moves against the evil Matron Maelora and her increasing dominance if both the entire Underworld and Upperworld are to be saved. But how will they go about it? Can they ensure their own success when an entire city is standing against them? Only they have the chance to halt the Rise of the Drow! Published by AAW Games.

Far in the future, bards sing tales of kings and conquerors from ages past - but from your present. The Hero-Kings of legend are your player characters from your campaign, who even now shape the course of Cerilian history. More than simply an adventure collection, this 160-page book enables you, the Dungeon Master, to turn ordinary domain actions into oppurtunites for heroic exploits. Each of the eleven "legends" set forth here is based on a different random event from the BIRTHRIGHT Rulebook. Don't allow a mere die roll to decide the outcome of a blood challenge, rebellion, intrigue, or magical event - make the PCs forge their own destinies by confronting a madman who is "Blood Hungry," wresting the "Fang of Kriesha" from its evil wielder's grasp, thwarting a rival regent's "Double Dealing," and saving all of Cerilia from "The Gift of Azrai." These adventures are suitable for PCs of all levels and classes - wheter regents, scions, or commoners - and can take place wherever you campaign is set. This book also includes an appendix that offers advice for running different types of BIRTHRIGHT campaigns and creating your own adventures fit for a king. TSR 3125