A vanished tome, a faded legend, and the end of the world. Out of the eons, the deadliest artifact. At least one magic-user is required, and fighters and thieves would be very helpful. Magic-users may have a special interest in this quest due to the nature of the item for which they search. Traps and puzzles are a dominant theme, and problem solving is necessary. Pgs. 41-64

This is a trapped corridor which can be dropped into any castle, dungeon, ruin or underground adventure. It features full rules on how to scare the living be-jesus out of your adventurers and have sone great fun with them too. Get ready... as the 'Umber Eyes' is ready to receive you...

"For untold eons, Eshebala ruled over Vulgarea, the 193rd Layer of the Abyss...content to revel in hedonism, corrupt the hearts of her dwindling followers and inflict petty cruelty. Yet, if there are days in the Abyss, there came one when she realized she despised her own province. She hated demonkind. She hated the Abyss. It had become unbearably tedious, spent...done. The burgeoning goddess decided she would dip her toe back into the lives of mortals, and quest to remember...to understand her own existence...But that was a lofty goal for a mind that had long ago begun to unravel. Instead...She is learning that all she has left is cruelty...and it was always cruelty that gave her power, so she now believes, to the woe of any who cross her path." Partly inspired by a scant notation by Carl Sargeant in 1992's TSR book Monster Mythology: "Eshebala is the foxwoman deity of vanity, charm, greed, and cunning. Her symbol is a female fox. Eshebala appears as a foxwoman, a shapely fur-covered female with a fox’s head, or as a beautiful young elf maiden. She is bedecked in rich clothing and jewels, and carries a silver mirror. Eshebala’s realm of Vulgarea can be found on the 193rd layer of the Abyss. She is wily and vain. She favors beautiful things and collects jewelry and art, the tackier and flashier the better. She prefers to overcome her opponents using subtlety rather than force, seducing and devouring out of boredom. She loves gossip, and always insists on being the center of attention. Eshebala is a patron of evil shapeshifters who use their wits and wiles before resorting to violence." Eshebala is a true chaotic evil demon goddess, behaving 100% true to form, and an extremely challenging opponent to take down for your players. An unforgettable 262 page jaunt for Levels: 15-17, with multiple possible modes of play, including Party Mode for up to 12 players. Profusely and paintstakingly illustrated over the course of several years by an award-winning professional illustrator. No stock illustration in this beast! A loving, dark & insanely detailed exploration of the 193rd Abyssal Plane An exuberant nod to the most grueling, deadly dungeons ever created Rich encounters that play out in a unique way each time 100 + NEW CREATURES 200 + NEW TREASURES (& possibly the most illustrated treasury ever provided) 82 BOOKS for PCs to discover 70 + NEW SPELLS & RITUALS, INCLUDING DETAILED OPTIONS FOR DEMON SUMMONING 50 + NEW TRAPS, HAZARDS & EFFECTS (guaranteed to run amuck) 4 RANDOM TREASURE TABLES, including a TABLE OF GEMSTONES that would be useful in any campaign 2 NEW CLASS SHIFTS: the Demonologist & the Exorcist!

The Great Trial is a 5e adventure for characters starting at 7th-level and ending at 10th-level. It's a dungeon consisting in the 3 levels, where the first level is the lowermost one and the last is the uppermost one: First level is composed by mean traps, puzzles and combat; Second level is a labyrinth with a construct Minotaur - the Minotal - and an iron wyvern, brand new creatures; The last and uppermost level is actually a jungle-like demi-place filled with dinosaurs in an open world format. Aenor Gleenwith, a powerful elf wizard, wants to make history alongisde Acererak for his Tomb of Horror and Halaster for his Undermountain. So he created his own dungeon. To test its efficiency, he captures adventurers and puts them in the lowermost level, where they need to work together to survive and leave the dangerous place. At the end, Aenor himself greets the group offering them apologies for the harm caused, to fix all damage caused and also rewarding them for the forced help. This module can be run in any setting, campaign, or as a one-shot. It should take around 10 to 14 hours to complete it since it contains 3 Chapters.

The lost city of Archaia - an ancient ruin sunken into the earth - lies deep in the badlands. In recent years, caravans from Eastdale have come under attack from orcs, goblins, and worse. Some say these blood-thirsty warbands have made lairs in the deep caves and ruins. Sill others say the ancient halls are filled with magnificent treasures left by the Archaians. Are you brave (or foolish) enough to delve The Forbidden Caverns of Archaia? The Forbidden Caverns of Archaia (FCoA) is a 296-page classic megadungeon for use with any old school fantasy role-playing game. The pages of Forbidden Caverns are crammed full with new material, maps, amazing art (including special surprizes by former TSR artists), as well as an amazing colour cover art by Ex-TSR artist Erol Otus that matches Barrowmaze Complete as a sister-book. The Forbidden Caverns of Archaia will keep your players on their toes and your campaign going strong for years. FCoA is brought to you by the Old School Renaissance (so don’t forget your 10’ pole).

The gates of Dwimmermount have opened. After years of rumors, it is time to discover the secrets of this vast mountain fortress for yourself… Dwimmermount™ is a classic megadungeon and old-school campaign setting presented use with Adventurer Conqueror King System™ and other d20-based fantasy role-playing games. The 400-page Dwimmermount hardcover includes: * 13 mapped, keyed, and stocked dungeon levels containing a total of 715 fully-described and detailed encounter areas for players and their characters to discover – with random tables to generate even more! * 86 monsters and 70 magic items to confound, challenge, and reward your players. * 6 pre-generated adventuring parties to serve as rivals for your player characters. And more! Published by Autarch LLC

Dwarrowdeep is a new megadungeon from Three Castles Award Winner (2018) and Barrowmaze author Dr. Greg Gillespie. Gundgathol lies in ruin. Over 250 years ago, an evil host rose from the underdark and pushed the dwarves out of their ancestral mountains. Since that time, orcs and worse have defiled their sacred halls. In recent days, the high dwarven clerics cast their runestones and read the portents: the time has come to retake Gundgathol. Are you brave (or fooloish) enough to enter Dwarrowdeep? Dwarrowdeep will keep your players on their toes and your campaign going strong for years. Dwarrowdeep is brought to you by the Old School Renaissance (so don’t forget your 10’ pole). This project was created through a group of awesome backers from Kickstarter. Without them, this project wouldn't have happened. Thank you for your support! Check my drivethrurpg profile for all sorts of additional Barrowmaze material. This megadungeon adventure includes an all-star cast of Ex-TSR artists including Darlene, Larry Elmore, Tim Truman, Jeff Dee, and Diesel. It features 150 unique zipitomes (art that tells a story of iconic adventurers along the bottom of the page) illustrated by Peter Pagano. Dwarrowdeep is the single largest dwarven themed adventure in the history of role-playing games.

When her father goes missing, a young adventurer has no other choice than to gather her friends and head for the city of Loudwater. Soon after she gets swept away in an obscure design threatening to drag the entire region into chaos and war. At the heart of this mystery, lies not only her father, but the long-forgotten history of her once-despised family and a primordial beast influencing events from the shadows, moving her family like pieces on a chess board. Visit www.perfumersdaughter.com for more information. You can also address me directly on The Perfumer's Daughter Q&A on Facebook. All battlemaps and dungeons are free to download for use in digital platforms (such as roll20) on the aforementioned site.

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.

Jaja

For ages untold, a gemstone monolith has pierced the heart of the Echo Wood. Now, as civilization intrudes upon this enigmatic splinter, a strange life once again stirs in the depths—one with ties to undying evils and a might beyond time itself. The promise of wealth and power calls to glory-seekers from across the Inner Sea region, tempting them into a labyrinth of monster-haunted vaults, defiled tombs, arcane laboratories, and worse, as they seek to unveil the secrets locked below the legendary Emerald Spire.

The Granddaddy of All Dungeons Returns! Rappan Athuk, the legendary mega-dungeon by Frog God Games and Necromancer Games is nothing more and nothing less than a good, old–fashioned, First Edition dungeon crawl updated for the Pathfinder Roleplaying Game. Very difficult, Rappan Athuk will truly strike fear into the hearts of the most stalwart adventurers. It offers legions of inventive traps, tricks, strange features, and monsters—many of them never before seen. It affords numerous opportunities for roleplaying, but anyone willing to brave these subterranean halls better arrive ready to rumble, or their lives will be short indeed. Many, many players have lost favored PCs delving into the depths of this dungeon, all the while giggling like children and having the time of their lives. Hundreds, if not thousands of players have combed the halls of Rappan Athuk over the years, seeking treasure and fame, making it one of the best-known dungeon locations the game has ever produced. Even players who have never entered its halls know the term: “Don’t go down the Well!” Also available for S&W and broken into multiple adventures. Also see https://paizo.com/store/byCompany/f/frogGodGames/pathfinderRPG/rappanAthuk for expansions for this product.

In City Year CY444 the greatest Dwarf mage of all time, Archmage Panzar, mounted his Flying Pig and rode up to the Necklace to do battle with Guth-Targ Greller Ak Terraak, an Efreet, and her army in her asteroid palace. Despite his great magical powers, Panzar failed and his burnt and petrified body fell from the asteroid and crashed down upon a hillside somewhere in the Borderlands. His fall drove a narrow pit into the hillside to a great depth, although neither his body nor his legendary magical equipment were ever recovered. But now a seal ring bearing the mark of the House of Panzar has been found in a riverbed thirty miles west of the border city of Karan. The river is fed by streams emerging from the hill above it – Dol Jint. Could this large hill be the final resting place of the great mage and, more importantly, all his loot? The Pit of Panzar has over 300 encounter locations over 5 levels, this is a MEGA-DUNGEON scenario that follows the Dunromin University Press paradigm of Great Quality at the best possible value for money. The Pit of Panzar is designed for OSR and AD&D 1st and 2nd Edition, or pretty much any TTFRPG, intended for 5 to 8 adventurers of 6th to 9th level

Part megadungeon, part underground expedition, Operation Unfathomable serves as both a one-shot adventure and a campaign framework. PCs are (optionally) drafted at swordpoint to recover the Nul Rod, a priceless artifact that was recently lost in a local prince's foolhardy attempt to destroy the Chaos Gods of the Underworld. The PCs have been drafted as an expendable set of pawns to venture into the vast and bewildering Underworld and retrieve the Nul Rod. With the Underworld's innumerable beasties being on high alert after the prince's expedition, the PCs must sneak through the incredibly dangerous Underworld. Fighting is not as important as stealth, fast-talking, and running away rapidly. This is the expansion from Sholtis's original Operation Unfathomable, released in Knockspell #5 (2011).

When the mysterious Gauntlight, an eerie lighthouse located inland from Otari, glows with baleful light, the people of Otari suspect trouble. The town’s newest heroes must venture into the ruins around the lighthouse—and delve into the dungeon levels far beneath it—to discover the evil that Gauntlight holds. Hideous monsters, deadly traps, and mysterious ghosts await the heroes who dare to enter the sprawling megadungeon called the Abomination Vaults! Content Warning: Does contain themes of suicide.

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.

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.

The rubble-strewn passageway twists and turns, winding ever deeper into the mountain, lower and lower into the bowels of the ancient, forbidding halls of long-dead dwarves. The torchlight flickers, threatening to succumb to the oppressive darkness. Creeping along one striated granite wall, Arikus the warrior moves cautiously toward the great cavern ahead, its sides and walls disappearing into the gloomy distance. Cocking his head to one side to listen, he holds his hand up for a moment, demanding unconditional quiet from from his companions. Then , his arm relaxing in relief, he waves everyone forward and moves into the open. Before him, scattered to the far walls of the enormous cavern, are piles upon piles of glittering treasure - coins from countless kingdoms, sparkling gems, exquisite jewelry, and items of wondrous power - enough for twenty kings' ransoms. Arikus laughs gleefully, thrusting both hands into the nearest cache of coins to let them runs through his fingers. At that moment, a monstrous shadow looms threateningly over him. Looking up, Arikus blanches and stumbles back in horror before the terrible visage of a Great Red Wyrm. The fearsome dragon opens its razor-filled maw and spews forth a gout of white-hot flame, engulfing the hapless warrior.... The ultimate Dungeon Master Fantasy! This is the most deluxe dungeon. Designed to appeal to discriminating and demanding role-players. Adventurers, beware. This is more than just a dragon hunt. Within the lair of the beast lie cruel and deadly traps, befuddling conundrums and puzzles, and cunning minions that will be the end of overconfident or careless adventurers. Comprised of three 64-page books, for two adventures that link to one super-campaign 12 full-color reference cards 16 special player handouts Eight Monstrous Compendium sheets A Sheet of cardstock standups with 24 plastic bases. Six full-color poster maps, two of which link together to make a giant tactical playing surface for use with miniatures or the included cardstock figures. TSR 1089

When huge stones fall out of the night sky, A deadly curse settles over Gravencross. Help the village exorcise the Demon Stones. “The sun had set an hour ago, and the rain lashed down and the wind howled on the dark moor. A storm this late in the season was unusual, but this one seemed different. The clouds were more menacing, tinged with anger, the rain colder and more biting than usual. Skerrill had to find the lost calf and get him back to the farm before his father came back from the city on business. He’d been looking for two hours now, and he was right in the middle of the moor when the storm hit. He knew he should have turned back as soon as darkness fell, but then he was never the brightest boy in the valley. If only he had remembered to lock the farm gate. The calf was now likely dead anyway having stumbled among the boulders and rocks, panicking in the dark, and then fallen in a floodwater stream and drowned. Either way, he was in more trouble than he could imagine. Suddenly, a bright flash of white light and a roaring peal of thunder were preceded by an explosion as a huge object fell from the sky and impacted the ground of the moor no more than a stone’s throw from him. Dirt, mud, water, and debris erupted from the impact site, flying high into the air and then covering the moor for hundreds of feet all around. Skerrill was knocked to the ground instantly and covered in the fallout from the blast. His ears rang and his head spun, but he staggered to his feet in a daze. He stumbled to where the blast had happened only moments before, and in a depression in the ground lay a huge stone glowing orange as if hot. Skerrill passed out. Two more thunderous explosions crashed in the distance.”

She ran. Where to or for how long, she really couldn't say. The little flame of her oil lamp sputtered and went out a few times. She'd snap her fingers and make the wick flare to life, but she may as well have ran blind. The hallways were pitch black with soot and choked with smoke, every turn was a guess and every corridor a gamble. Unnatural screams echoed from every direction. Left, right, left again, was this the south or north end of the labyrinth? She had no idea. The next turn brought her face to face with a doorway completely consumed in blue fire. The room beyond was so bright she had to look through her fingers at it. A shadow covered her, a shape in the doorway: a hulking creature with a wolf-shaped muzzle and enormous pincers for hands, wreathed in the same blue flames. The screams were getting closer behind her, too. They had her cornered, again. The demon slammed its shoulders through the narrow opening, splintering the wood and stone. She dropped the lantern and let the wand in her sleeve fall into her waiting hand. With a word of power and a gesture, she appeared in the familiar bedroom: stuffy and reeking of wood smoke. She'd have to try again tomorrow, if she could remember. During an exploration on the sixth level of Undermountain, a strange invisible creature leads to a series of collapsed chambers that hide a forgotten secret and one of the most devastating forces known to the multiverse. Marambra Nyghtsteel, the forgotten apprentice of Halaster Blackcloak, has been locked away for an age deep within Undermountain. What point and purpose her forced seclusion has, only Blackcloak may know. When a spell consuming blue fire, known as The Spellplague is trapped within the chambers, a series of events have left Marambra, lost in her madness, struggling to survive.