Undermountain: The Caverns of the Many-Legged is an adventure detailing a hidden mini-level for Dungeon of the Mad Mage for characters of levels 12-13. It uses some of the story and lore of that book, but it can be incorporated or dropped into any setting or homebrew campaign. In a hidden part of Undermountain, former slaves feed their fat, monstrous queen who is fixated on revenge. A broken drow house has finally found a place to call home – only to become abominations. And a massive beast slithers, hunting for anything to satiate its hunger and quell its madness. Welcome to the Caverns of the Many-Legged. Which side, if any, will adventurers choose as they explore this hidden mini-level for Dungeon of the Mad Mage? In this adventure, you will find: a mini-level that can be easily incorporated into Dungeon of the Mad Mage a vivid cast of unique monsters and NPCs, including chitine warriors, a choldrith queen, a spellcasting draegloth, a mad yuan-ti anathema, and others (stat blocks provided for all creatures not in the Monster Manual) locations that could be used or adapted elsewhere, such as a chitine colony and a drider-controlled drow fortress a combination of roleplay, exploration, and combat encounters

"The Aboleth's Grotto" is a nihileth lair suitable for four 10th-level characters. The adventure can be completed in one session. The small town of Springwell harbors a secret that almost nobody knows about, and those who do conveniently ignore: it sights right over an unoccupied settlement of the deep caverns of the underworld.

An unceasing rain has settled over the hamlet of Holmford and with it a darkness has fallen. Minister Scrim is dead, livestock and crops wither and rot and now a child is missing. Whispers of an old hate returning feed fear and paranoia. All the while the Hornwood looms hiding it’s vile secret. Light must return to Holmford before history repeats and more innocents perish.

Chapter 1 - When a relative of someone close to the characters goes missing from a nearby village, the players are asked to investigate. The party has to recover stolen goods from a thief before setting out from the City of Ravens Bluff. They travel through the wilds of Vesperin in search of the missing person, finding trouble and helping locals along the way. Chapter 2 - As the journey continues, the party arrives in a small hamlet suffering from a strange blight. The players will need to investigate the situation and choose sides in a longstanding feud between the mayor and a local magic user. Chapter 3 - After clearing a tribe of violent orcs from a nearby mountain pass to protect the residents of a town, the party will have to enter the lair of a long-dead dragon to rescue their quarry from a band of goblinoid slavers, where they discover an entrance into a dwarven city, lost and forgotten centuries ago. Chapter 4 - The party will have to traverse the ruins of the dwarven city, avoiding hazards and battling the horrors that lurk there, to uncover the identity of the slaver's leader. A discovery that will lead them through a treacherous forest to the city of Tsurlagol in search of a pirate ship called the Star Carver, and its drow captain, The Viper's Kiss. Along the way, they meet an unlikely ally. Chapter 5 - Once they arrive in Tsurlagol, the players will have to choose between gaining the assistance of the city council to fight the pirates head on, or making a deal with the Viper's Kiss, herself. The path they choose will either lead to an epic battle on the Sea of Fallen Stars, or into the deadly sewers and tunnels beneath the city to face an enclave of wererats, undead, and a tribe of mad, kraken-worshipping kuo-toa, in search of a fabled relic. The Laughing Horde of Ruin, Part 1 is the first module of an original 5e adventure campaign. It is designed for character level 1-5, and uses material from the Dungeon Master's Guide, Monster Manual, and Volo's Guide.

In this small 20 page adventure module, discover an island infested with giant spiders and hope that you don't get caught too deep in their web... Spider Isle- a 5e SRD adventure for levels 4, 7 or 10. In James Grammaticus' Dungeon Short series, James explores fantasy worlds and settings in short bite-sized one shot adventures that be used on their own, can spring off into a larger campaign, or can be used as a side-adventure in a campaign. Featuring 4 original statblocks, and a new playable race, find out what terrors await your players in Spider Isle. An Island Adventure Dungeon Short.

Synopsis: A swamp village is plagued by swarms of insects; several villagers have died from it. It turns out that the local herbalist is actually a vampire who takes the form of a swarm of mosquitoes. Talk to villagers and get rumors, visit the herbalist, suffer through some dreams, get ambushed by the herbalists minions, chase him into the basement to kill him and rescue the villagers. The mosquito vampire and, maybe, the role play involved in convincing the villagers to dig up the graveyard (to find empty coffins filled with sand!) should be fun. The rest of this is pretty simple.

Drawn by greed or curiosity the adventurers enter the strange ruins of castle of madmen. Terrible monsters stalk the hallways, but the greatest challenge is not merely to survive but escape with their sanity intact. The Palace of Sweet Dreams sends the adventurers on a different and challenging dungeon exploration, where wits and smarts will be key to survival. Those who the masks may seem harmless ... The adventure contains new monsters and magical items to keep your players on their toes and let them discover how magical items can present their own adventures. Originally from the Danish convention Fastaval as part of the living campaign, Hinterlandet. Now presented here for the first time in English. It is an adventure with emphasis on exploration and meeting the unknown.

"A temple destroyed by divine wrath... An ancient, imprisoned evil and a powerful idol. Mysteries abound in the tombs below the temple of the Iron God, protector of the dead. Discover the dreadful fate of the Iron God's priesthood and the reasons behind their downfall in this intriguing adventure designed for low-level characters. Tomb of the Iron God covers a large catacomb area on two levels, with 58 keyed locations and six new monsters. This is a Swords & Wizardry (0e) dungeon crawl for four to five characters of 1st or 2nd level, by ENNIE-award winning author Matt Finch. The vengeance of an angry god, and treasures untold. The corruption and greed of the monks of the Iron God has brought divine vengeance upon their heads - the ancient monastery was recently destroyed in a cataclysm of fire and lightning, and only the tombs beneath remain intact. Somewhere in the catacombs lies the treasure the monks accumulated before they met their doom. An intrepid band of adventurers, willing to brave the perils of the unknown tombs, could gain riches beyond their wildest dreams. Do you dare to enter the burial catacombs and discover the chilling secrets of ... The Tomb of the Iron God?" Also available for 5E

Long ago, a small but mighty humanoid kingdom existed in what is now the local wilderness. Bugbear and ogre warriors fought brutal wars of expansion, earning great fame and amassing considerable fortunes from their predations. Those who died in battle were buried in large tomb complexes dug into hillsides and honored as patrons of the living. Among these tombs was the large tor known as Hightower. Though it was neither the largest nor the most famous of the kingdom's tombs, Hightower did represent a typical example of this kind of structure. As happens to all such nations, the cruel humanoid kingdom eventually fell to a more powerful foe that razed all its cities and outlying fortifications. Of the tombs, only Hightower escaped destruction -- largely because it was an unimportant monument in a remote location. A few tribes of humanoids that survived the devastation tried to use it as a fortress, but the humans with whom they clashed defeated them soundly and sealed the entrance with a huge, round stone to ensure that the tor could no longer be used as a base. Since then, Hightower has served as a landmark for travellers in the know, but it has otherwise been largely forgotten. But the electrical storms that have plagued the area in recent days have been quite severe, and a few weeks ago, a stray lightning bolt broke open the stone seal. Tonight, yet another terrible storm is sweeping through the wilderness, driving all creatures to take shelter where they can find it. Hightower looms on the horizon, and its door is no longer blocked. Will the PCs dare to enter its silent halls?

Having put down a rising of giants, it was discovered that the motivating force behind their depredations was that of long-forgotten evil - the Dark Elves. Determined to seek out these creatures, a body of doughty adventurers mounted an expedition to learn the strength of the Drow and bring retribution to them (DUNGEON MODULE D1, DESCENT INTO THE DEPTHS OF THE EARTH). This module contains background information, a large-scale referee's map with a matching partial map for players, referee's notes, special exploration and encounter pieces, a large map detailing a temple complex area, encounter and map matrix keys, and an additional section pertaining to a pair of unique new creatures for use with this module and the game as a whole. A complete setting for play of ADVANCED DUNGEONS & DRAGONS is contained herein. This module can be played alone, as the second part of a series of three modules (with DESCENT INTO THE DEPTHS OF THE EARTH, D1, and VAULT OF THE DROW, D3), or as the fourth part of a continuing scenario (DUNGEON MODULES G1, G2, G3, D1, D2, D3, and Q1, QUEEN OF THE DEMONWEB PITS). TSR 9020, From 1978

An elder warlock from the goblinoid swamp village of Urzin has been kidnapped by soldiers of the Dwendallion Empire. Now the machinations of an evil imperial inquisitor might unleash an evil that could threaten the garrison at Fort Venture and the goblinoids of Urzin alike.

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!

Things are darkest before they go totally black. He wears black, hires orcs, and looks depraved - but don't be fooled. He's far more dangerous than he seems. Thaddigren Dentiata recently arrived in the village of Sisak, and within 3 months had constructed a great tower on the outskirts. The villagers have become more wary of him, since he employs the help of orc henchment (albeit polite ones), and also is suspected of using dark magic. Since then, livestock has begun disappearing from the surrounding pastures, and two drunk men fell upon a terrible fate when they went to investigate the tower secretly. One was killed and the other remains missing. The villagers have confronted Dentiata, but he and his henchmen politely turned aside their questioning. The players arrive just after one of the town elders was taken by orcs from the village after trying in vain to rally the rest of the townspeople. The players will spend some time in the village gathering information and then attack the tower itself, ending in a final battle with the evil wizard. The module provides details on all buildings in the town as well as all NPCs and stores. Pgs. 6-24

One of the original D&D classics, "The Isle of Dread" is a hex crawl wilderness adventure. It focuses on surviving primitive beasts, dinosaurs, and pirates while uncovering the mystery of the island's inland city, where a great treasure awaits. From the cover: "This module contains maps and background material for the Isle, fifteen new monsters, and suggestions for further adventures. In addition, The Isle of Dread contains a map and background information for a large continent, and eleven smaller maps for encounters on the island itself. In this module, players will push their way through dark jungles and treacherous swamps to discover the lost plateau, and the final secrets of - the Isle of Dread!" TSR 9043

Hunt for the Thessalhydra is a short adventure published by Wizards of the Coast as a tie in to the "Stranger Things" franchise and part of the Stranger Things Dungeons & Dragons Starter Set. The adventure features characters, locations, and monsters inspired by that series. The adventure is suitable for characters of level 3-5.

Into the Drachensgrab Mountains! Hot on the trail of the marauding slavers, you and your fellow adventurers plunge deep into hostile hills. Spurred on by your past success, you now seek the heart of the slaver conspiracy. But hurry! Your must move quickly before the slavers recover from your previous forays and attack! This module was originally used for the official Advanced Dungeons & Dragons Tournament at Gen Con XIII and is the third of four in a series of related tournament modules. This module contains a challenging scenario, the tournament scoring system, plus nine pre-rolled, playtested tournament characters. Also included are large scale referee's maps, notes, and background information. A3 is a complete adventure in itself, but it is also a companion to A1 (Slave Pits of the Undercity), A2 (Secret of the Slavers' Stockade), and A4 (In the Dungeons of the Slave Lords). TSR 9041

Tristan Harpell, a self-centered though likeable young mage, has bought a magic village! A month ago he sent his servant off to take possession of it, and he's heard nothing since. Our heroes are sent to investigate - and find an adventure unlike anything they've experienced before...

Dungeon Masters Kit - Number 1 Palace of the Vampire Queen For three centuries the peasants of the Dwarvish island of Baylor have feared the raids of the Vampire Queen and her minions. Sweeping down at night from the palace in the shrowded peaks of the island, they range even further in their search for blood. And not only blood - the children of dwarf peasants often disappear if they are so unfortunate as to be out at night. Even the cities are no longer safe. The most recent victim was the Princess of Baylor, daughter of King Arman, who was taken in a midnight raid on the capitol city of At Toe within past weeks. King Arman has offered fabulous riches and land holdings with titles to the person or persons who can brave the stronghold of the Vampire Queen and return his daughter to him alive and well. But, in truth, he holds little hope. For even King Arman, Ruler of Baylor, Defeater of the Ten Orc Tribes, is afraid in his heart to face the Vampire Queen. Published by Wee Warriors, Distributed by TSR

The ruined siege castles outside Absalom have long beckoned adventurers looking to make a name for themselves. Now an earthquake has cracked open one of these fabled ruins, and its lost mysteries and fantastic treasures lie exposed for the first time in centuries. But the tower's empty halls once more echo with living footfalls, and a new master has claimed the Fallen Fortress as his own.

"The Dark Forest" is an elder shadow drake lair suitable for four 8th-level characters. This adventure can be completed in one session. A hidden grove within a dark forest has been home to a tribe of alseids for generations. The tribe's most recent leader and spiritual heart was an alseid shaman called Riatha the Raven. Within the grove lies an ancient ring of standing stones atop a burial mount. Here, Riatha conducted sacred nature rites to honor and bless the forest and the tribe. During one of these ceremonies, the ground rumbled and a column of dense black energy shot straight up from the burial mound and into the night sky. Thick darkness enveloped the area, and the suddenly blinded alseids heard terrible roars. An instant later, the darkness dissipated to reveal a mysterious pool ringed with skulls among the standing stones. Two large, dragon-like creatures with black scales and burning red eyes glared at the confused alseids. One the ground lay the body of Riatha, deathly still. Terror and chaos followed as the creatures brought swift and sudden death, killing most of the alseid tribe members with razor-sharp teeth and deadly, black breath. The alseids that survived the inital, bloody attack fled into the forest. They counterattacked a few hours later, desperate to reclaim their grove and recover the body of their beloved leader, but the attempt was a fiasco and they were quickly driven off. Now, the few remaining alseids hide in the forest, frightened and unsure of what to do next.