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!

Once a powerful proponent of Law, the Archmage Tazimack the Red was eventually driven mad by a fear of mortality. As he slipped into insanity his retirement home began to reflect the chaotic bent of his mind. Long after Tazimack’s unnaturally animated body has disintegrated, his manor house remains as a shadow cast by a twisted intellect. Can the characters bring order to this chaos?

Follow a crazy halfling into a vampire’s castle. Kingdom in the Swamp is an AD&D adventure for higher-level characters; 6th to 9th level would be suitable. While it is necessary to have strong combatant characters and at least one cleric, it is more important that the players be ready to find solutions beyond the sword or spell book. Adventure Background A few days ago, Candor Pletten, a halfling thief known more for his urban exploits, returned from a journey to the southern jungles and rain forests (or so he says). Few people have believed him in the past -- usually they have been too busy taking inventory of their possessions to even listen to him — but some are guessing that he may actually be telling the truth (certainly, he’s got a good story). Candor left town a couple of months ago with some other adventurers, but has come back alone. Most tavern patrons are of the opinion that he took his companions’ purses and ran, but why would he come back to town? And why, then, aren’t his former companions hot on his trail? Candor may be a thief, but he’s not a murderer. He even gets nauseated by cockfighting. Maybe the halfling's tale is worth hearing...

A traditional "funhouse" dungeon, White Plume Mountain begins with the archmage Keraptis stealing three artifacts and leaving cryptic poems with their former owners. The players are hired to recover the items, and find a bizarre dungeon in the side of the eponymous volcano. TSR 9027

It all begins with a simple request (doesn’t it always?) from an old farmer. The request – protect his cattle herd from vicious wolves. Simple enough for the brave adventurers, right? But it doesn’t stay that way. Not at all. Soon, the adventuring party will find themselves in the thick of it as they solve puzzles, avoid traps, fight for their lives, and endure witty taunting. And in the end, they discover an artifact that may, or may not, be useful to them. This adventure includes a cursed shield, a new undead creature, and a new artifact. Total party experience earned is approximately 14,500.

An embattled outpost at the edge of the wilderness has finally been overthrown. Strange creatures patrol the land. A local hamlet is in ruins. But just who-or what-has taken over this once mighty fortress?

Many Cannith creation forges were lost on the Day of Mourning, but a rogue artificer has uncovered one of those that pursued some of the most experimental and dangerous research during the Last War. But while seeking the forbidden knowledge in the forge, this explorer awakened a dark power that was more than she could handle, and that now threatens the region. Pgs. 4-34

There is no particular overarching story here, just a prospect gate keep dungeon you can drop into your own sandbox and run as you see fit. This adventure is formatted to both 1E & 5E gaming rules.

The legacy of Dr. Frankenstein lives on as the handiwork of a rash young scientist responds in an unexpected manner. An angry lover and an evil monster. The party must stop this monster before he kills the young lovers.

In Heart of Nightfang Spire, the player characters are drawn to investigate Nightfang Spire, a lonely stone tower in a barren land. The vampire lord Gulthias, servant of the great dragon Ashardalon, has returned to the tower which was once the main cult temple of Ashardalon. The vampire prepares for the dragon's return by awakening the other cultists who had preserved themselves as undead creatures. Gulthias is a vampire and a level 13 wizard.

The End of the World Is at Hand! A hideous death cult has seized control of an ancient artifact-monument known as Tovag Baragu. The power behind the cult is the Old One himself, Iuz the Evil, demonic master of an empire. He's on an all-or-nothing quest for supremacy over the world—and the heavens beyond. To stop him, heroes must face horrors never dreamed of, journeying to a shadowed city where Death rules and the living cower. Here, Iuz will achieve his mad dream by destroying the imprisoned master of that alien citadel: Vecna, the mightiest lich, an immortal demigod. Two items exist with the power to stop Iuz—the Eye and the Hand of Vecna—but using them carries fantastic risks. Not even the gods know what will be unleashed when these items are fully activated. Die Vecna Die! takes the heroes from the Greyhawk campaign to the demiplane of Ravenloft and then to the Planescape city of Sigil. However, none of the material from those settings is required for play. TSR 11662

For the past 5 years this elven village has been plagued by undead creatures of the nearby swampland. The undead are consisted of unlucky elf villagers or travelers who were foolish enough to walk through the swampland. It is unknown how the undead appeared in the swampland in the first place, but it is rumored that a demonic entity has found shelter in a cave inside the dark forest next to the swampland and it is being worshipped by necromancer cultists. This adventure is for parties no larger than 5 characters and no higher than level 5.

Fort Akor has come under attack by a dragon, but when the PCs seek out the beast in the surrounding jungle they discover the dragon may be the least of the fort’s troubles. The Pcs travel to Fort Akor, where they learn that the fort has been under attack by a dragon (which is really a tyrannosaur). Prince Henri asks the PCs to slay the dragon attacking his fort before it causes further damage. If the PCs investigate the fort before setting out after the tyrannosaur, they may discover the hidden corpse of its hatchling. They may also discover the truth behind the fort's dark history. Tracking the "dragon" to its lair and slaying it for Prince Henri forces the characters into conflict with a faction of the centaurs living in the jungle, who disposed the hatchlings corpse at the fort. Discoveruing the truth of the prince's conflict with the jungle natives might lead to an alliance. Pgs. 16-41

The fate of a city lies within a dungeon whose doors are sealed with - cards It's up to you to bring it tumbling down. “House of Cards” combined dungeon exploration with the Deck of Many Things to create an adventure experience unlike anything seen before. The deck is both a treasure and a trap, guarding a tomb complex that’s being used by the Night Masks thieves’ guild as a lair. If the PCs want the deck for themselves, they must first gather all the cards, which is easier said than done. - Christopher Perkins Pgs. 38-64

A storm of unparalleled fury has been ravaging the peaks of the Earthspur Mountains for a tenday, and the Monastery of the Yellow Rose sits in its eye for now. Some monks have fled the monastery to the safety of Mulmaster and beseech you to convince their more obstinate brothers to retreat to the city before the eye of the storm shifts, and the monestary is in terrible danger. Can you brave the elements and convince the monks to escape?

A supernaturally powerful storm, mudslides, and agitated dinosaurs are the least of the worries in the tropical village of Mora. The village's spiritual leader, the Zombie Master, has gone missing, and now undead rise from sodden graves and the village matriarch lies dead, murdered by her own son. What dire menace awaits in the flooded catacombs below? Set on the infamous Isle of Dread.

Exploring Baba Yaga's Dancing Hut. This adventure design to test high level PCs can be used in a variety of scenarios as the DM sees fit.

Something is killing people in Palebank Village, and if the party does not stop it they could be next.

Manthrak's Malicious Steamroller After an experiment with a teapot goes wrong, a wizard's tower rolls through the forest, crushing all beneath it. Its owner, Manthrak the Meticulous wants it back. It's up to you and your companions to stop the tower's rampage before something even worse happens. Manthrak’s Malicious Steamroller is a short, high-octane one-shot adventure module for a party of four or five 4th level characters. With no setting specific details, it can be easily dropped into any campaign, or run on by itself for an action-packed escapade. Included: Full-color 13-page PDF Virtual tabletop maps - Gridded & Non-gridded Accessible & print-friendly PDF A fun, unforgettable experience

A Vistani fortuneteller has called you out by name during the Burgomaster’s private reading. She raved of an army of the dead, a delicate powderbox, and a beautiful yet dangerous woman. Now the Burgomaster wants to know why you’re more important than he is... Part Four of Misty Fortunes and Absent Hearts.