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!

It's party time in Thyatis... And simply everyone is going to the magnificent Villa Osteropolus, home of the wealthy old senator, Helenites. Raucous fun, exotic food, and even advanced betting on the upcoming Arena games are expected. Even adventurers just in from the outlands may meet the powerful here. So don your festive togas, for in Thyatis City there are important connections to be made and deeds to be done, duels to be fought and fame to be won. (But beware, oh Adventurer! The politics of Thyatis can be as labyrinthine as mazes beneath the Coliseum...) This module is designed especially for the DM who wants to sharpen his interactive skills. Presenting the detailed layout of a Thyatian noble's mansion and maps of the multi-level Coliseum of Thyatis. Four four to six characters, levels 2-3 Brief guide to Thyatis legal system New optional class, the Rake Fast unarmed combat system, including disarming attacks Special appendix on creating Thyatian names Featuring the DM's Guide to Winging It TSR 9284

For over a thousand years the things that lurk beneath the waters, skulk in the darkness and lie hungrily in dank crypts have been patient, while all around them men and monsters bicker amongst themselves, bold enough to traverse the dark caverns' depths but afraid or perhaps wise enough to leave the forgotten vaults and hidden passages alone. Beneath the lost ruins of ancient Thracia lie the vast caverns of a once great civilization. While a death cult rules the surface, the Minotaur King and his beast men lurk fall below. Descend even deeper into the darkness and discover a lost and arcane world that waits for those brave enough to enter! Necromancer Games and Judges Guild have teamed up to expand and update the classic module Coverns of Thracia for 3.5. Designed for characters of 3rd to 8th level and higher, the Caverns of Thracia is a mini-campaign setting that presents intricate plots and exciting adventures.

The giants are only a half-mile away - straight up. Giants and humanoids that sail down from the heavens? Where could they be coming from? No base town or general area map has been provided, as this adventure can take place anywhere and can be easily integrated into any existing campaign.The DM should make sure that the town in which the PCs start is large enough to provide most anticipated supplies, spells, and services. This module is not a simple hack·and slay expedition. It also involves diplomacy and wit; if the PCs attack everything in sight, they may be destroyed. But the adventure is not entirely negotiation, for it has a good share of hearty dungeon exploration as well. Pgs. 4-23

Built into what was thought to be an inactive volcano, the Halls of Beoll-Dur were created as an isolated training ground for dwarven clerics. However, upon their mountain shaking itself awake the dwarves discovered that they shared the mountain with something far more sinister. Few escaped to tell of the massacre as an horde of salamanders rising from the fiery depths, claiming the halls for their king. Now the temple sits desecrated, waiting for the day that hero's will purify it of the evils within. Pgs. M1-M16

Sharlo Tan was a sorceress. She was a scholar. She was a spy. And she left behind a legendary trove of treasure, guarded by riddles, secrets, and the passage of time. But it isn’t an ancient rumor that has the people of Rivesby on edge. The hobgoblins of the Lamellar Banner have encamped less than a day’s march away, and no one knows what has brought them out of their stronghold. In this richly detailed adventure, players can choose whether to play peacemaker or treasure hunter, explorer or exterminator. But they won’t be the only ones playing games, as they encounter creatures and NPCs who have their own conflicts and motivations. The Secret of Sharlo Tan is a mid-length adventure for levels 2-4 that easily plugs into any 5e campaign. It’s particularly suited to those who love witty books, solveable riddles, and nuanced interactions, but it readily accommodates smash-mouthed impatience as well. Depending on playstyle, it can fill 2-4 play sessions of 3-4 hours. The adventure includes: * 40-page fully illustrated PDF with player handouts * 3 stat blocks * 4 dungeon maps in DM and unmarked versions * 11 all-new magic items

Gray Mountain lies deep in the lush elven forest. The temple there was a haven of meditation and learning - until taken over by an evil cleric known as the Rahib. Far under the mountain, he paces before the temple's great altar. A brown-robed servant rushes in and falls to his knees, trembling at the sight of the Rahib's black panther. "Rahib, adventurers came to the village as the sun rose - the strangers now protect Rahasia." A scowl crosses the Rahib's face. "I must have Rahasia! Attack again tonight." As the servant scurries away, a deep growl rises from the giant cat. Gripping the panther's leash, the Rahib paces again, speaking out loud. "We must dispose of these strangers quickly; the secret beneath the temple will not wait much longer." Note: the setting is unspecified, but certain tie-ins, like the wines, prefigure Ravenloft. See: https://twitter.com/chrisperkinsdnd/status/703751906703749120 TSR #9115

Fortress, Tomb, and Tower: The Glain Campaign is the second published adventure series for the Basic Fantasy Role-Playing Game. This module includes three distinct adventures designed for a group of low to mid-level player characters, comprising a total of seven dungeon levels: The Fortress of the Iron Duke: On the day before the wedding of the Duke of Freestead to his beloved Kylenne, an explosion engulfed the Palace, and almost overnight the valley fell into ruin. Tomb of Karsma Megalos: The proud Serenhai people were ruled long ago by a seemingly immortal hero, Karsma Megalos. He disappeared in the Cataclysm, and no one knw here his body was laid... until now. Crooked Rock Tower: Once the old tower on the crooked rock was home to the enigmatic Wizard of Clocks; later it was occupied by the evil wizard Walgren. Rumors tell of great treasure buried beneath it... Published by basicfantasy.org

An unusual pirate outpost on a small island is causing big trouble for the residents of coastal towns in more ways than one. A Minotaur clan have recruited outlaws and formed an alliance with Sahuagin in order to establish a pirate outpost on a formerly abandoned island and have begun raiding up and down the coast...

A new megadungeon from Three Castles Award Winner (2018) and Barrowmaze author Dr. Greg Gillespie! HighFell: The Drifting Dungeon is a 246-page classic megadungeon for use with any old school fantasy role-playing games/clone. The pages of HighFell are crammed full with new material, maps, and art, including a colour cover by Ex-TSR artist Erol Otus (that matches Barrowmaze Complete and The Forbidden Caverns of Archaia as sister-books). HighFell: The Drifting Dungeon will keep your players on their toes and your campaign going strong for years. HighFell is brought to you by the Old School Renaissance (so don’t forget your 10’ pole).

The Iron Route, an important trade road east of Phlan, is beset by competing bandits. An exiled Black Fist officer leads his band of mercenaries turned cloaked ruffians, while a mysterious dragonborn sorcerer commands screaming savages from the north. In this war over the trade route, the beleaguered merchants are the victims, and Phlan suffers from a lack of supplies. It’s up to adventurers to strike out and reopen this vital route.

An exclusive party at an illustrious antiquities museum. A missing benefactor and host who turns up dead. A missing mummy, the crown jewel of a new exhibit, and a hardboiled detective trying to make sense of it all. And a party of adventurers caught right in the middle! Welcome to the Lucaryen Museum of Antiquities, enjoy your visit. We recommend for your safety not to wander the halls at night; some of our exhibits have a habit of coming alive and attacking the unwary. Not to mention other guests who may have something damming to hide, and a loose set of morals. Don’t worry - I’m sure you’ll be fine! In this pulp thriller mystery one-shot, your players will be thrust into the role of Occult Detectives, investigating the murder of the museum’s namesake and searching the premises by night to uncover clues and the whereabouts of a missing mummy. Inspired by films such as Night at the Museum, The Mummy, and classic ‘Whodunnit’ murder mystery tales, your players are sure to have a killer time! Featuring: 15 pages of content, comprising 4-8 hours of play A full-scale, two story museum for your players to explore Shady NPC suspects and unlikely allies, complete with unique stat blocks Myriad potential encounters and one epic final Boss Fight, with 46 unique creatures from the Monster Manual, Volo’s Guide to Monsters, and Mordenkainen’s Tome of Foes Helpful tips for newer DMs

A shadow from the past, the Ghost Tower of Inverness has loomed ever larger in the mind of the great Seer of Urnst, Now he has convinced the Duke that an expedition should be organized to go to the ancient keep and recover its greatest treasure — the fabled Soul Gem. TSR 9038

Nearly 100 years ago, Lord Eriador wrested the lands from the hands of evil and began a reign of unsurpassed courage, wisdom, and might that lasted over three centuries. One day this great man of valor was called onward to continue his battle for freedom and goodness on a higher plane of existence. Leaving the responsibilities of rulership to his faithful overseer, he donned his magical shield, helm, and sword and traveled to the Holy Maountain of Anduin to meet his destiny. Eriador left the overseer with this solemn promise: if there ever arose a time of great need, he would answer a summons from the Mountain of Anduin to come back to vanquish any evil that dared to oppress his people. It is now the reign of the third overseer. For years now, an evil mage has been plaguing the land by sending forth hordes of evil humanoid minions to oppress the people. The overseer has been forced to pay tribute to the mage to protect his people. Life has become nearly unbearable for his subjects. It has been over five years since the mage desecrated the holy mountain by placing foul creatures in its depths to guard against the possibility of the people seeking help from their nearly forgotten champion. A fortnight ago, your party was gathered in a secret council chamber to meet with the overseer himself. You felt a spark of hope for the people of this land as the overseer told the legendary tale of Eriador. He gave you the equipment you need and charged your party with the task of venturing into the heart of the now monster-infested Mountain of Anduin to call back the people's great hero, Eriador the Paladin. Although the three parties sent before you had not returned, ridding the of the land of the mage seemed worth any risk, and you eagerly set out on your quest. Now, standing before the defiled mountain, you wonder if perhaps you were too hasty.

In this adventure, the PCs discover that not all souls rest easy, particularly those spirited away to Nightwyrm Fortress. To learn the truth, players must pierce death's veil itself and enter the Shadowfell, where sinister echoes of life wing through eternal gloom. This adventure can be run as a stand-alone adventure or as Part Three of a three-part series of adventures (starting with P1 King of the Trollhaunt Warrens(TM) and P2 Demon Queen's Enclave(TM)) that spans 10 levels of gameplay.

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

The heroes arrive at the eponymous Keep on the Borderlands, a fortress on the edge of civilization built to stave off the chaos and evil of the wilderness. Using it as a home base, a party can make forays into the surrounding wilderness, encountering monster and marauder alike. The centerpiece of the adventure is certainly the CAVES OF CHAOS, a network of tunnels and caverns found in the walls of a nearby but isolated ravine. It is here that hordes of evil humanoids have made their home. Through combat and negotiation, the players can try to explore and map out these caves, perhaps with the aim of accumulating valuable treasure or even cleansing the land of evil creatures. However, even the Caves are not all they seem. Beyond the goblins and kobolds lurk dark horrors: cults dedicated to fiendish chaos and a Minotaur's enchanted labyrinth await the unprepared adventurer. But for the hero who is brave, clever, and fortunate in equal and sufficient measure, great treasures and glory await in the Caves of Chaos that lie beyond the Keep on the Borderlands! TSR 9034

Stonehell Dungeon: Into the Heart of Hell is the long-awaited sequel to Stonehell Dungeon: Down Night-Haunted Halls. This book contains the final levels of the megadungeon, revealing its most terrifying secrets. It contains almost 600 dungeon rooms for the players to explore, more than 70 unique monsters to challenge them, and 13 new magical items to mystify them. Stonehell Dungeon is a classic-style megadungeon intended for use with the Labyrinth Lord™ role-playing game, but adaptable to early versions of the original fantasy role-playing game and its retro-clones. It gives the game master the necessary information to run the dungeon, while offering enormous opportunities to customize the site. Published by Three-Headed Monster Games.

A group of mysterious, sea raiders— capable of appearing from out of nowhere, striking, and disappearing— has terrorized a group of coastal states for some time. Now the leader of the states has asked the characters to infiltrate the raiders, find out how they operate, and put a stop to their activities. But once the heroes join the raiders, things aren’t as clear as they were led to believe. Will they succeed at their mission? Or join the raiders themselves? Pgs. 54-82

Minotaurs are fond of mazes, but rarely build them. Hex is an architect, engineer, and overlord all in one. A self-declared "Minotaur Lord", he is the only one of his kind known to exist. His lair is all he has, a gargantuan, ever-expanding labyrinth in which he keeps the spoils of his many conquests in youth. Now an ancient veteran, he works tirelessly to keep his hoard safe and to entice new adventurers to test themselves against his gauntlet of lethal traps. Tyrants and Hellions is a Dungeon Master's aide, containing fifteen villains complete with schemes, lairs, backstories, and everything else you need to drop them into your own 5th Edition Dungeons & Dragons campaign. Within its 400 pages you'll also find the methods, both mechanical and thematic, used to create villains that spark the imaginations of your players. Hex is one of these villains, and his adventure takes up 33 pages (pg 110-143). Published by 2CGaming