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!

The Dread of Dynwel is an adventure set in the Forgotten Realms and optimized for 4-5 players. The characters start as a down on their luck but somewhat experienced crew of adventurers with a wanted poster which pays a much-needed gold reward. Soon, events in the Sunset Vale are revealed as more dangerous than they seem, sweeping the characters along with them. From the heights of the Sunset Mountains, the alleyways of Scornubel, and depths of the Reaching Wood: The Dread of Dynwel covers levels 2 through 8 and features material which can be played as a full campaign or dropped into an ongoing one.

Dracula, the Lord of Shadow and Darkness, has covered the land in shadow and dispatched armies of monsters and undead from his magical castle. His armies threaten to overrun major cities and plunge the world into a literal Dark Age. The last of the vampire-hunting clan that traditionally opposed him has disappeared, and still the armies advance. He must be stopped. If that's not enough motivation, it is well-known that his castle is full of magical items and great riches... but also great danger. If you've ever wanted D&D and Castlevania to meet, look no further. This adventure is exactly what you wanted. Every area of the castle poses different and unique challenges to keep the party engaged and on their toes. Written for the DM as a ready-to-run adventure, it is designed for four to six characters. The adventure starts at level 3 at the outer defenses of the castle, and ends with the party advancing to level 13 after defeating Dracula in an epic battle. The adventure includes documentation to help even a new DM succed, including suggestions for how to run each of the area "boss" monsters in combat. There are approximately 50 new enemies and over 3 dozen new magical items. It also comes with a list of suggested music for many areas of the castle, and a 25-page campaign log recounting an actual tabletop play-through of this adventure from the DM's perspective.

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.

The last of his line, Baron Paytro NeMoren has left his dark secret sealed for decades in the family's underground vault. Now, years after his death, a group of stalwart heroes has gathered according to the baron's final wishes. At last, the seal will be broken and the secrets of the vault revealed. Can all sins be forgiven? The adventure is designed to kick-off a campaign, as it provides for an interesting way to get the party together. Instead of meeting at a tavern or being recruited by the local militia, each party member starts with a key to the NeMoren's vault, a key that was handed down by a friend or given as a gift for some good deed peformed in the past. The executor of the estate has gathered together all of the key-holders so that they could claim the contents of the vault. The vault can only be opened with all of the keys in unison. The vault is protected by a number of minor traps and tricks, but it also became the final resting place for the Baron's ex-lover, Lisette, and her brothers--all three of whom had attempted to blackmail the Baron. They were buried alive and are now undead. To complicate matters, a young umber hulk made its way to the vault, leaving some crude tunnels that were later exploited by hobgoblins coming from another surface entrance. The party will need to deal with the hobgoblins, the undead, the traps, and possibly the young umber hulk. There is a side-plot of poisoned groundwater in the nearby town that the party can also resolve by clearing out the undead and properly disposing of the putrid corpses leaking into the groundwater from the vault. Produced by Fiery Dragon Productions

Lots of stronghold assaults and shipboard travel/encounters in this one. This adventure's deep political basis might be seen as an introduction for the domain-focused adventures of Companion-level play. This adventure is for use with the Dungeons & Dragons Basic, Expert, and Companion Rules, and includes the intrigue of engaging with nobility's lands and agendas. Intro: All is not well in the kingdom of Vestland. Not only is the king dead and the holy Sonora Crown missing, but the heir to the kingdom was lost at birth and no on knows where to find him. As if this wasn't bad enough, the forces of the Ethengar Khanate, never on the best of terms with Vestland, are now massing on the borders, hoping to take advantage of Vestland's plight. To complete the rosy picture, traitors from within also threaten to speed the downfall of the High Kingdom. Sounds like a job for you. You must find the long-lost heir to the kingdom and recover the Sonora Crown, the mystical device without which a king cannot be crowned. Standing in your way are traitors and spies from within and invaders from without the kingdom of Vestland. Time is running out! Can you save Vestland from disaster? TSR 9218

"Gnolls have captured the heroes! After stripping the characters of all equipment except their armor and clothing, the gnolls drag them to an expansive briar maze known as the Twisted Thickets and set them loose. Then, armed to the teeth, the gnolls hunt down their prey. The characters must survive the hunt and outwit their pursuers. After dealing with the gnoll hunters, the heroes can try to reclaim their lost equipment and exact revenge on the tribe, which lairs in the caves beneath Dead Gnoll’s Eye Socket."

Odyssey of the Dragonlords is heavily inspired by stories from ancient Greek mythology. As we designed the campaign, we sought to include ideas from many different sources: The Odyssey, The Iliad, Jason and the Argonauts, The Oresteia, and others. However, Thylea is not ancient Greece. You will not find Zeus, Athena, or Apollo among the gods. As you explore Thylea, you will encounter familiar tropes, monsters, and treasures from Greek mythology—but the rules are different here. Mortals have only recently come to these lands. The world of Thylea blends high fantasy with the trappings of ancient history. Elves, dwarves, and halflings now live alongside minotaurs, centaurs, and satyrs. Our goal is to make your party feel like heroes from one of the greatest stories ever told—but the ultimate end of that story is entirely within your power. Your players will make choices that forever change the world of Thylea. As the gamemaster, we encourage you to embrace this idea and run with it. How will your players reshape history—and what does it mean to be a hero?

"Between a Dragon and His Wrath" is an adventure for a well-balanced party set in the lands of Nordmarr. Although the adventure is best set a generation after the War of the Lance, the DM should have little trouble placing it in other times in Ansalon's history.

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

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

A Planescape adventure for 4-7 PCs of levels 9-12 (about 60 total levels). While the module begins in the planar city of Sigil, most of the action takes place in Vudra, a layer of the Abyss. The PCs start in Sigil, tasked to find a vanished brother, and the trail leads to Vudra where the layers demonic ruler gathers magical blades for a terrible vengeance plot. Pgs. 32-58

Far north of the Denali homeland is the Archipelago of Tyr and home to dangerous seafarers. Tyr is well-known as the land of the Minotaur that does allow some foreigners to visit albeit with less than perfect hospitality. Originally used as a one-shot with the Denali campaign characters, King Pellet sent the party north to investigate a trade deal and look into reports of some type of incendiary weapon…

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

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

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 country of Rhyl has been beset nearly every night for many years by a large, terrible creature that flies out from the mountains near the city of Asereht. Nearly a year ago the creature broke through the wall of King Namreh’s castle and carried off the king’s son, Prince Laechim, along with a large amount of the royal treasure. After the creature’s raid on the castle, King Namreh ordered his army to search the mountains and discover Astylis’ complex. The soldiers made two forays into the mountain wilderness, but each time were harassed and eventually driven back by goblin raiders. Since the failure of the second assault, the king has taken to commissioning small parties of mercenaries and adventurers, sending them into the mountains with promises of great reward upon the completion of the rescue mission. For reasons which the king has never found out, none of these rescue parties has ever returned to Asereht. Your party is now attempting to be the first. Pgs. 37-44

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...

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.

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).