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!

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

The Cult of the Dragon, along with its dragon allies and the Red Wizards of Thay, seek to bring Tiamat from her prison in the Nine Hells to Faerûn. To this end, they are sweeping from town to town, laying waste to all those who oppose them and gathering a hoard of riches for their dread queen. Continued in The Rise of Tiamat.

Beware All Who Enter These Benighted Halls of Stone. Within Lies No Solace Nor Any Comforts of Home. Toiling For Our Crimes We Must Dig Where We Dwell, With No Freedom or Mercy In Our Vast Stony Hell. Stonehell Dungeon is a classic-style megadungeon, filled with enough monsters, traps, weirdness, and treasure to keep you gaming for a long, long time. Explore over 700 rooms, encounter more than 40 new monsters, and discover 18 mysterious magical items -- and that's just in the first book! Stonehell Dungeon: Down Night-Haunted Halls details the first six levels of a megadungeon intended for use with the Labyrinth Lord™ role-playing game, but is easily adaptable to most early versions of the original fantasy role-playing game and its retro-clones. Featuring art by J.A. D'Andrea, Lee Barber, Marcelo Paschoalin, and Ralph Pasucci, Stonehell Dungeon gives the game master all the necessary information to run his players through the dungeon, while offering enormous opportunities to customize and expand on the site. The monsters of Stonehell Dungeon are waiting to meet you. Won't you come in? Published by Three-Headed Monster Games.

The Borderlands. An untamed wild region far flung from the comforts and protection of civilization. A lone fortified Keep is the only bastion of Good desperately striving to maintain the forces of Chaos at bay. But Evil is everywhere, lurking in dark caves, fetid swamps, forlorn forests. Bands of cutthroat brigands and ruthless tribes of humanoids eager to clash with the forces of Food rove the region. The Borderlands hold many secret wondrous locations, and opportunities for fame, prestige, and fortune are plentiful. But equally abundant are the perils, risks, and challenges to those brave enough to explore the wilds. Sharpen your swords and axes. Purchase your iron rations and tinderboxes. And Don't forget at least one 10-foot pole. Adventure awaits those with the mettle to confront Chaos in the Borderlands!

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.

This alternate starter campaign takes you to all the familiar locations of the Lost Mine of Phandelver adventure from the other side of the veil. Some places look the same, some very different. The entire plane is trying to strip you of your mind, your memory, and your motivation. Discover how the Forge of Spells was fueled. Learn the location of lost adventurers from the original Phandelver expedition. See what Cragmaw Castle looked like in its prime. All of this and more, as this takes you from level 1 to level 5 with well over 20 hours of play time. If you are looking to start a new campaign or just experience familiar locations in a new setting, this supplement accommodates. Inside you'll find: Maps: Nine encounter maps Cragmaw Castle rebuilt, including the upper floor, and underground level. Wave Echo Cave before it was tunneled. A very different looking Redbrant Hideout Ruins of a town similar to Phandalin A swamp and muck version of Cragmaw Hideout Plus new magic items, and more Monsters: 37 new creatures Lore Information on a shadowy Yuan-ti empire A new offshoot of the abyssal demonhive A cult using the stoic ways of stone to evade the Raven Queen's watchful eye and pilfering ways. New players vying for control of the Shadowfell Shadowfell Guide: Information on the plane, its inhabitants, and included with this supplement is the best selling Shadowfell Random Encounters appendix. Easter Eggs Hidden throughout the story are references to Lost Mine of Phandelver. Including references to other hard cover books as well.

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.

In Temple of the Dragon Cult, the characters are called in to pursue a dragon that the king’s army was able to wound but not kill. It seems straightforward enough: the army tracked the dragon to its lair, and all the characters have to do is go in and kill it. But this dragon has a devoted cult of dragonblood followers who worship its every breath. Its lair is their temple — and they’ll fight to the death to defend their dragon-god…

Lord Blackmoor's son has been kidnapped, and is being held in the crypts beneath an ancient fortress. Can our heroes rescue the boy before he is sacrificed in a diabolical ceremony? The party responds to a plea for assistance from Lord Blackmoor, whose son Willet has been kidnapped. Blackmoor desperately needs someone to mount a rescue mission. The party journeys along the old East Trail, facing bandits and dangerous obstacles before delving beneath the ruins of Firestone Keep, encountering fearsome enemies and ancient magic. Finally, the party must fight for their lives as the truth about Willet’s abduction is revealed.

Who Do You Trust? In the cool streets and blazing bazaars, the word is out: a great treasure has gone missing in the Everlasting City of the Cat, and some very ambitious people have set their sights on it. Many paws and claws are out, and everyone is sniffing around for something rich and strange. It’s an odd time for a catfolk thief and a gnoll merchant to make very tempting offers to strangers in town. Or, perhaps it’s not odd at all. Get caught up in the hunt with Cat and Mouse by Richard Pett and Greg Marks! A perfect introduction to the Southlands campaign setting, and it fits neatly into any desert city where cats are sacred and rats are cautious and sly.

The final fate of Roslof Keep and the Company of the Ivory Scimitar hangs in the balance. With five levels conquered, the party must finally face the ultimate challenge of the sixth and final floor. Can the stalward adventures overcome the last defense of the Infernal Machine? Will Roslof Keep be freed from the violet corruption? What unforeseen plot twists still await those willing to brave the challenges presented in The Realms of Madness and Despair? This adventure is formatted to both 1E & 5E gaming rules. Also available in PDF.

The Blistering Forge Situated atop Mount Marazbor, an active volcano, it the dwarven lava-forge once known as Citadel Grungharaz. Once, this great armoury produced hordes of weaponry for dwarven regiments in far off lands, but now it has been taken over by rampaging fire giants. Are you capable of infiltrating the Gauntlet of Flame?

Villainous Kobolds in the service of a newly hatched Red Dragon Wyrmling have raided a village, making off with half a dozen children! Will the adventurers be able to rescue the young hostages in time, or will the Wyrmling have a particularly fine dinner this evening? Note: Requires Volo's Guide to Monsters

Brambletoe Hall has ever been deep, warm and filled with mirth. Here, the good mayor Willie Brambletoe has long presided over a board of warm mutton, fresh apples, berries, peaches and the like, as well as wondrous breads, warm butter and cool drink. Mayor Willie invites all, inviting may various and sundry folks to sit and eat with him, or to gather about his great hall and make merry, pass the time and exchange news of distant happenings in exotic lands. But something has changed in that noble Halfling's Halls and a Shadow of Evil has taken up abode there. Not many days past, in those deep hours before the dawn, the sounds of merriment changed to cries of despair. A haunting came to the Good man's home and left an air filled with the noise of terror and a foul odor of unrepentant evil. Abandoned now, a shadow has hung over the hall ever since. Foul play or murder, none knew. But the Shadow of Fear has spread, stalking the environs of Newbriar. And the locals now say Newbriar has come at last to know the shallow welcome of the other world. In fear, the folk of Newbriar have called for aid, sending riders forth to find courageous heroes willing to rid the town and its sufferages of the terror of the Shadows of the Halfling Hall.

A new, expanded, OSR-ised, prettified edition of Joseph R. Lewis’ Ragged Hollow Nightmare which was rated among The Best by Tenfootpole. Joseph Lewis hit a perfect balance between the classics of dungeonverse fantasy and the whimsy of the folk tales we love so much (as testified by our Folklore Bestiary. we released last year), adding a dash of dreamworld strangeness and a pinch of body horror to spice up his brew. We did our best to respect his recipe when adding our extra material (about 30 pages of it). We worked with Joe and Li-An (the perfect artist to give life to spooky Ragged Hollow and its strange surroundings) to make the best module we could: a solid introduction to old-school gaming for both players and gamemasters. And for the veterans among us, it also makes an excellent, full-fledged campaign starter. Nightmare over Ragged Hollow is a sandbox adventure centred around a quaint town at the edge of the kingdom. But however quiet life in Ragged Hollow is, the town lies between places where you shouldn’t be traveling alone. Places like Gloam Wood (“A witch or two lurk there!”), the Bleak Mountains (“I’m told there are bugbears…”) and their infamous Mount Mourn (“Home, they say, to cursed Dwarven ruins”), not to forget the Wailing Hills (“Bandits on every road!”). There’s even a haunted house by the river (“That mad inventor riddled it with traps!”). But only when an impenetrable dome of golden light materialises around the Temple of Halcyon (“Hey, my kids go to school there!”) do things really get out of hand. Some selfless heroes (or, failing that, a bunch of greedy ne’er-do-wells) should really get involved. One town with three adventure mini-sites Three small dungeons One 50-room dungeon Three hexes with 16 detailed locations Two groups of potential allies or rivals Sixteen pre-generated characters One deadly countdown! Written for the Old-School Essentials (OSE) rule system

NEVER MEET FORGOTTEN HEROES! Long ago a half-elf, half deer-centaur named Jayne led a small guerilla band against the armies of an evil fae witch. They prevailed at terrible cost. Monsters moved into her hideout-turned-sepulchre, still haunted by Jayne’s ennemies and companions, and a ghost longing to complete his vengeance... Adventurers will discover the fates and true faces of unremembered heres. Will they get out with forgotten riches, or become the latest victims of a centuries-old tragedy? A 39-room OSR dungeon module for character levels 5-7. Designed for use with the Old-School Essentials ruleset, compatible with most old-school pen-and-paper RPGs.

At Restwell Keep, you've heard that fortune and glory await those bold enough to brave the dangers of the Chaos Scar, a valley carved ages ago by a fallen star. The same tales warn that this Chaos Scar draws wickedness to it. Perhaps you can help stem this tide... and gain treasure along the way. While the location is a different keep, this adventure is an homage to B2 Keep on the Borderlands(https://adventurelookup.com/adventures/b2-keep-on-the-borderlands)

The end of the road. A lonely fort stands on the banks of a mighty river. It is here the hardy bands of adventurers gather to plan their conquests of The Hill, the hulking mass that looms over this tiny settlement. The Hill is filled with monsters, they say, and an evil witch makes her home there. Still, no visitor to The Hill has ever returned to prove the rumors are true or false. The thrill of discovery is too great to pass up, and only the river stands in the way. The adventurer's boat is waiting! This module is designed for use with the D&D Basic Rules. A trip through the wilderness begins a unique challenge for the novice player and Dungeon Master. TSR 9078

Rare portals between the planes sometimes appear in the Caslan Woods. Recently though, these mythical woods have slowly moldered into swampland. As if that wasn’t grim enough, bands of ogres and kobolds raid nearby settlement without fear of reprisal. Your adventuring party traverses the Caslan Woods, hoping to find the source to these strange occurrences. What lies at the heart of the swamp, however, is anything but expected.