The sewers beneath Mulmaster have always been dangerous, with countless stories of brigands, murderers, and worse that lurk beneath the streets of the City of Danger. But those stories pale in comparison to a new threat under Mulmaster, one brought to light by a strange and disturbing corpse recently found. It is up to you to learn the terrifying truth of what lurks below.

The town of Sandpoint, Varisia, Inner Sea Region has put out a bounty on the nearby tribe of Licktoad Goblins in retribution for the goblins raiding traders and travelers near the quiet town. The party takes up the bounty and ventures into the swamp; eventually finding the goblin village in ruins and it's inhabitants scared in it's burned huts. The party finds out; either through investigation of the ruins or the goblins themselves; that a group of skeletons with eastern arms and armor had ransacked the village and took a stash of fireworks that the goblins stole from an old shipwreck. The party then makes it to this cave and finds it empty except for a half dozen skeletons. Further in past the skeletons is their leader, a skeletal samurai who fights the party in an attempt to defend his treasure. The treasure turns out to be a letter that reveals that secrets of the Kaijitsu family; the same family their good friend Ameiko who runs the Rusty Dragon inn belongs to; that lies in wait in the abandoned town of Brinewall to the northern boarder of Varisia. Ameiko along with several other important NPCs with a caravan north. It's recommended that GMs create encounters for the caravan trip north as it's essentially 3 weeks of travel with nothing in it. It's also recommended that GMs completely ignore caravan rules; they're not flushed out and they're not fun to run. The party and the caravan reaches the abandoned town of Brinewall where their friend Ameiko becomes possessed and is thrown into a coma; where the other NPCs agree to take care of her while the party explores the town and castle. The castle is a three floor behemoth of a dungeon populated by Dire Corbies, Troglodytes, and various other monsters all under the leadership of Kikonu, an Yamabushi Tengu Oni. The goal of exploring Brinewall Castle is to find the two keys to the vault; one of which is on the Yamabushi Tengu while the other is on a Half-Fiend Decapus that lives in the basement of Brinewall. Once the PCs enter the vault they find the Amatatsu Seal; one of the seals that cement authority to one of the ruling houses in Minkai of Tian Xia; as well as several visions that show that Ameiko Kaijitsu is the rightful heir to be ruler of Minkai and that they'll need to travel north to do so. Such ends the first book of six.

A level 2–3 sewer adventure by Glynn Seal. PCs plumb fetid sewers and recently-revealed secret halls, in search of a lost worker. In these forsaken chambers, they may find answers and treasures, but may also come face-to-face with a bloated monstrosity and its depraved followers. For Old-School Essentials (OSE) Included as one of four adventures in "Old-School Essentials Adventure Anthology 1"

For the past several days, dozens of strong earthquakes have rocked the coastal area surrounding the underground Temple of Poseidon. Since the first quake, there have been a growing number of reports of strange events and macabre occurrences throughout the area. Several families near the temple have abandoned their farms and refused to return. They claim to have been terrorized by inhuman specters who prowled about their farms late at night. One of the farmers says he found a farm animal crucified and eviscerated in a ritualistic fashion on his front porch. Following the first tremors, all communications with the Temple of Poseidon, seemingly the center of the troubled area, were cut off. Messengers dispatched to the temple to request guidance from the Holy Oracle located there have not returned. Now the darkness has spread to this town. Unnatural births have occurred. Strange cries can be heard in the night, and there is a cowl around the moon. Magical divining has proven useless in naming the dark forces that invade. Many of the townspeople have already abandoned their homes and those who remain have but one recourse left: They have sent out a cry for hardened adventurers, experienced in dispatching evil. They must travel to the temple to discover the fate of the men there, and, if possible, elicit their help in destroying the growing heinous power. Pgs. 31-46

Important: The adventure is 1e but it has monster conversion notes for D&D 4th edition The town of Highport, once a human community overlooking Wooly Bay from its perch on the northern coast of the Pomarj, fell prey to hordes of humanoids swarming out of the jungle-covered hills surrounding the settlement. Though the orcs, goblins, kobolds, ogres, and gnolls razed much of the place in their ferocious rampages, the smoldering ruins they left behind soon became a new kind of community, a place of trade between the humanoid “locals” and the unsavory human traders who have no compunction about doing business with them. Slaves are a commodity in ready supply in Highport’s market, since many pirates raid up and down the coast of the bay, putting fishing villages to the torch and filling their holds with captured refugees. Slavery has become a thriving business in the town, and rumors abound of a cartel of Slave Lords who run things from behind the scenes, filling their coffers in secret from the buying and selling of human chattel. The trade has become so prolific that the good folk to the north have grown tired of these depredations and decided to fight back. Forces of righteousness and honor have recently descended upon Highport, some openly and others in secret, in various attempts to destroy the machinations of the Slave Lords and abolish the abominable enterprise that has taken far too many loved ones from home and hearth. One such doughty servant of goodness is Mikaro Valasteen, a cleric of Trithereon. Mikaro slipped unnoticed past the crumbling walls of Highport with a single mission: to rescue and transport as many slaves to their freedom as possible. Mikaro and a handful of faithful assistants located a number of escaped slaves—as well as rescued a few more not sufficiently restrained and guarded—and shepherded them through the gates and beyond the reach of their humanoid tormentors, returning them to their lands and homes. This covert freedom brigade enjoyed remarkable success early on, since the servants of the Slave Lords were often lax in their vigilance and sloppy in their efforts to prevent loss of the “merchandise.” After one too many shipments never made its destination, the humanoids stepped up their security and the normal channels of escape from Highport closed to Mikaro and his team. He cannot risk exposure by smuggling the freed slaves through the gates as merchandise any longer, since shipments of goods are now regularly stopped and checked. No longer able to free the slaves in that manner, Mikaro began hiding his charges in an abandoned villa in a particularly rundown part of the town. Although they are safe for the moment, their numbers have grown unmanageable, and the priest fears it is only a matter of time before someone slips up and brings slavers to their doorstep. Ever more desperate to find a new means of escape from Highport, Mikaro has started work on a plan that is both daring and dangerous. He intends to use a series of old sewers coupled with natural caverns running beneath the town as an escape route to the sea beyond the walls. But he needs someone to clear out the creatures and pitfalls he knows lie within. Pgs. 2-27

Giants have been raiding the lands of men in large bands, with giants of different sorts in these marauding groups. Death and destruction have been laid heavily upon every place these monsters have visited. This has caused great anger in high places, for life and property loss means failure of the vows of noble rulers to protect the life and goods of each and every subject -- and possible lean times for the rulers as well as the ruled. Therefore, a party of the bravest and most powerful adventurers has been assembled and given the charge to punish the miscreant giants. This module contains background information, referee's notes, two level maps, and exploration matrix keys. It provides a complete module for play of ADVANCED DUNGEONS & DRAGONS, and it can be used alone or as the first of a three-part expedition adventure which also employs DUNGEON MODULE G2 (GLACIAL RIFT OF THE FROST GIANT JARL) and DUNGEON MODULE G3 (HALL OF THE FIRE GIANT KING). TSR 9016

In the Yatil Mountains south of Perrenland there is rumored to be a magical hoard of unsurpassed value, a treasure of such fame that scores of adventurers have perished in search of it. Find the perilous Lost Caverns of Tsojanth and you may gain the hidden wealth of the long-dead arch-mage-- if you live. Module S4, this contains a brief wilderness journey to the caverns, but the bulk is underground. The caverns are noted as a previous lair of the Arch-mage Iggwilv- though she is long gone, her Demonomicon remains. This module marks the first appearance of several monsters and items that would later appear in the Monster Manual 2 and Unearthed Arcana. A labyrinth features in the caves. TSR 9061

*THIS IS A D&D NEXT/5E PLAYTEST ADVENTURE* Imani, a Turmishan wizard and former adventurer, seeks the aid of heroes to infiltrate Dretchroyaster’s lair and recover the Diamond Staff of Chomylla—the key to powerful magic and wisdom locked away for thousands of years. In addition to his own sagely interest in the lore of lost Uvaeren, Imani recognizes the dangers of such powerful magic falling into evil hands. The dracolich has secured the staff in his lair’s cen- tral chamber, using ancient wards of protection that can be bypassed only by four artifact-idols once belong- ing to a cult of Bhaal. Each group of adventurers enters the dungeon through a different section of the dun- geon—a forgotten temple of Bhaal, a vast underground lake, a troglodyte village, or Dretchroyaster’s vaults. Dretchroyaster’s lair is no simple set of caverns and ancient ruins. It sits atop a source of great power and energy, which the dracolich and his Cult of the Dragon allies hope to use to unlock the secrets of the staff. Only by undertaking a unified assault against Dretchroyas- ter’s lair can the adventurers hope to recover the Diamond Staff and survive the dracolich’s fury. The adventurers must make their way through the lair and recover the Bhaalite idols that will help unlock the Diamond Staff, all the while dealing with the lair’s creatures and avoiding the dracolich as he pur- sues intruders. Entering the Chamber of the Diamond Staff, the heroes must overcome its magical wards and claim the staff before being slain by the dracolich and his servants.

One of the original D&D classics, "The Isle of Dread" is a hex crawl wilderness adventure. It focuses on surviving primitive beasts, dinosaurs, and pirates while uncovering the mystery of the island's inland city, where a great treasure awaits. From the cover: "This module contains maps and background material for the Isle, fifteen new monsters, and suggestions for further adventures. In addition, The Isle of Dread contains a map and background information for a large continent, and eleven smaller maps for encounters on the island itself. In this module, players will push their way through dark jungles and treacherous swamps to discover the lost plateau, and the final secrets of - the Isle of Dread!" TSR 9043

Buried in fire, but hardly dead. Only the Keep survived the destruction of Koralgesh, but few adventurers will survive the terrors that now stalk the lost Keep's halls. Players hear rumours of the Keep at Koralgesh and then traverse it to acquire the treasure within. Pgs. 45-64

Centuries ago, a beholder named Yeryl fled from the place of his birth and wandered the countryside in search for a place to call home. After many sleepless nights spent carving out a safe nook for himself in the wilderness, he at last slipped into slumber. In his dreams, he found an ideal place for his lair: long-abandoned ruins hidden amidst a dull and barren valley. Yeryl spent years transforming the place to suit his paranoid designs. Visitors were rare enough, and the few that made it to Yeryl’s lair were quickly destroyed or forced into the beholder’s service, building the lair ever deeper and more magnificent. As time went on, Yeryl finally completed his task. Safe at last, but with nothing to occupy his mind, Yeryl was struck by melancholy; was this lonely and empty life truly what he had chosen for himself? On that day, Yeryl made a decision: next time an adventurer came to his lair, he would welcome them in. With this resolution in mind, Yeryl began to dismantle his traps and replace them with ones he considered to be more fun. Unfortunately, for all his good intents, Yeryl has not yet realised that killing people is a bad way of getting them to like him. Yeryl's Super Happy Fun Murder Dungeon is a highly obnoxious and mildly ridiculous collection of traps, combat and puzzles designed to test your players' wits and patience. It is optimised for a group of four to five 3rd level players, but the text also contains a guide for level adjustments for different sized groups.

A shrewd, spell-using green dragon has taken over the deepest chamber of a limestone cave as his lair. The dragon has persuaded a tribe of troglodytes to live in the outer chambers as a sort of "protective buffer" in return for gifts of magical treasure. The troglodytes cherish the useless bits of magic without realizing their modest worth. The outer chambers of the cave are protected by the troglodytes, the beetles and centipedes the troglodytes raise as cattle, and wild creatures. The green dragon uses traps, illusions and magical devices to protect his inner chamber. Wyrmhaven is the second dragon's lair to conquer. Part of TSR 1073 The Dragon's Den

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

Two centuries past, the dwarven smith Durgeddin the Black carved a secret stronghold from the caverns riddling a hill known as the Stone Tooth. Laboring ceaselessly in their halls under the mountain, Durgeddin’s clan forged enchanted weapons for use in their vendetta against the orcs that had driven them out of their old homes. Durgeddin and his followers are long dead, but the dwarf-hold is not empty. Deadly peril waits in the caverns beneath the Stone Tooth, as well as Durgeddin’s hidden armory of matchless weaponry. The Forge of Fury is a dungeon crawl, or site-based adventure, describing the ruined stronghold of Khundrukar. The characters come to the Stone Tooth in search of a hidden cache of Durgeddin’s superior blades. They find the old stronghold inhabited by a number of dangerous monsters.

On the border between Anuire and the land of the Khinasi, the Three Brother Mages fight an ancient and immortal awnshegh, the Chimera. The game of cat and mouse has recently begun to draw regents from the entire region. Rumors say that the blade of the last Anuirean emperor, the Sword of Roele, has been tracked to the Chimera's domain, the Chimaeron. The fact that the Gorgon's armies are mustering in Kiergard seems to support the rumor. But choosing sides between the Chimera and the Three Brothers is not easy matter. If the chimera drives the Brothers out, the trade routes through the Chimaeron may be sealed, leaving the seas free for the Khinasi to monopolize trade. If the Brothers drive the Chimera from the magical sources that give her strength, they may establish a beachhead for the Khinasi traders, who are slowly gobbling up the lands of Anuire just as their own lands were once annexed by the empire long ago. Who will you and your comrades ally yourselves with? Who is the true enemy? Can you recover the Sword of Roele before anyone else does, and lay claim to the Iron Throne? This Birthright adventure is suitable for use with any party of three to six characters of levels 5-8, including at least one regent. You must have a copy of the AD&D game rules, the Birthright campaign setting, and the Cities of the Sun campaign expansion to play. TSR 3118

Having put down a rising of giants, it was discovered that the motivating force behind their depredations was that of long-forgotten evil - the Dark Elves. Determined to seek out these creatures, a body of doughty adventurers mounted an expedition to learn the strength of the Drow and bring retribution to them (DUNGEON MODULE D1, DESCENT INTO THE DEPTHS OF THE EARTH). 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 temple complex area, encounter and map matrix keys, and an additional section pertaining to a pair of unique new creatures 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 second part of a series of three modules (with DESCENT INTO THE DEPTHS OF THE EARTH, D1, and VAULT OF THE DROW, D3), or as the fourth part of a continuing scenario (DUNGEON MODULES G1, G2, G3, D1, D2, D3, and Q1, QUEEN OF THE DEMONWEB PITS). TSR 9020, From 1978

Arcanamirium transmuter Maren Fuln found a magically sealed amulet in the school's library and kept it as a shiny bauble. Little did he know the amulet contained an entity far worse than he imagined, and by unsealing it, he loosed a revenge-obsessed horror into the sewers beneath the school. Can the Pathfinder Society halt the beast’s plan in time, or will he build his army of revenge and sow chaos in Absalom?

The Fate of Faerûn Lies in Shadowy Darkness! Daggerdale is reeling from a sudden series of murderous drow raids. As a grave threat to the entire surface world develops in the war-torn dark elf city of Maerimydra, intrepid heroes must discover its source and destroy it, if they can.

The Necropolis of Nuromen is a modular quest designed to let the referee introduce a group of 1st level characters to the thrills of Underworld exploration as they attempt to unravel they secrets of the evil necromancer’s lair and deal with some bandits, too. The Necropolis of Nuromen is set in a fantasy realm, beginning near the small town of Camlann Castle and leading adventurers to explore the sinister Necropolis of Nuromen. The narrative unfolds around Nuromen the Necromancer, who fell to ruin by dabbling in forbidden magic, leading to the downfall of his tower and the town known as Law's End. The adventure includes exploration of a haunted forest, encounters with various creatures, and a quest for lost treasures and magical artifacts hidden within the depths of the necropolis. To play this adventure you also require the BLUEHOLME™ Prentice Rules or the BLUEHOLME™ Journeymanne Rules. This is an updated Version of "Maze of Nuromen" from 2013.

A Ravaged Land... Villains that really are larger than life... A time for heroes... A decade ago, the land of Geoff was overrun by a horde of giants, ogres, and evil humanoids, its people either slain, enslaved, or driven into exile. Now at last the tide has turned. The time to free the people of Geoff from their servitude to the giantish tyrants has come! But don't forget to watch your step when you confront the true masters behind the giant Clans! Contains the full text of three classic adventures by Gary Gygax: G1, Steading of the Hill Giant Chief; G2, The Glacial Rift of the Frost Giant Jarl; and G3, Hall of the Fire GIant King. Details Eighteen new encounter sites in the war-torn land of Geoff, linked together to form a grand campaign. Provides dozens of hours of gameplay as the heroes struggle to free an entire country from the grasp of giant overlords. TSR 11413