None know from where the Heresiarch first came, but all remember the night that it did. It rode down from the bleeding stars on a great serpent, hurling bolts of obsidian lightning that shattered the monuments and capitols of every nation. Its infernal army swept aside the defenses of the mortal empires in a single hour, decimating legions once thought to be the invincible fist of humanity's god-kings. Faceless priests - each bearing the symbol of the trident - drifted through the fallen cities and scorched villages on a frigid wind, and when they rose to greet the huddled men and women ringed by their festering, bloated dead, they spoke a single, simple offer: worship the Heresiarch or die. Thousands of crusaders fell tonight so that you might be given this chance. In a last stand that, for the first time, united all of the empires of humanity as brothers and sisters, a way was cleared into an infernal stronghold said to contain a gate to the Heresiarch’s fane. All is silent save for the clangor of distant battle. Surrounded by grim-faced knights and teary-eyed peasants – their hands clasped in desperate hope – you step through the glowing, churning doorway, knowing there will be no help and likely no return. Published by Defy Danger and Save Versus Death

There is a witch in the wilds, a goddess unremembered, and a madman. There is a circle of stone - who knows what lies beneath? The villagers are distraught: their children! replaced by fae! The villagers are distraught: who heeded their plea? Ravenous inquisitors, that's who. Oh, and adventurers... This investigative folkcrawl adventure module contains: * an isolated village full of secrets, riddled with strange traditions, * adventure sites and dungeons populated by peculiar denizens, * a small Fae Realm to explore, weird and perilous, * a terrible fae threat and too many curses, * unlikely friends, and foes nobody expects! An OSR adventure module for character levels 3-4, designed for use with the Old-School Essentials ruleset, compatible with most old-school pen-and-paper RPGs. Includes a fully-linked interactive PDF, a fillable Referee's Toolkit, and player-friendly VTT maps.

A ten-part, fourthcore megadungeon designed to take a party of 4-6 players from level 1 to level 10. The Voice of All spoke three times before falling into silence. The first time to give shape to the Ancients. The second to give them the world as their domain. The third to build the TOWER for the war that was to come. And war did come. The Ancients, primordial warriors charged with protecting the world, were subverted by three great crusaders, vindictive and powerful. The Ancients were stripped of immortality and cast from the heavens to serve and suffer with the rest of humanity. The crusaders claimed new bodies for themselves, and became the Triumvirate, god-tyrants of all realms. The long line of descendants of the Ancients is dwindling, along with humanity’s last hope. What few remain have gathered to enter the TOWER OF THE ASCENDANTS. Crumbling stone tablets of ages forgotten say that a mortal who ascends the TOWER that pierces the heavens and slays the gods who dwell in its highest bower will reclaim lost immortality.

Long hidden away in remote vaults and guarded by powerful wards, the ancient Seven Swords of Sin have been stolen and brought together again for a terrible cause. Seven Swords of Sin is a lethal adventure that pits players against a vile enchantress, Tirana, in a trap-laden and monster-guarded dungeon. Only the brave (and perhaps foolish) can survive Tirana's lair and rescue the fabled Seven Swords of Sin from her heinous plot to unlock their deadly powers.

Many centuries ago, the dwarven kingdom of Sarphil stretched out across the Galena Mountains east of the Moonsea. They dug for the precious metals hidden beneath the rocky terrain, and they established numerous cities and settlements to aid in their excavation and manufacturing efforts. This was during the early days of Myth Drannor, the elven kingdom in the forest of Cormanthor, and the dwarves and elves initially clashed as each sought resources and expanded their territories. Myth Drannor and Sarphil eventually settled their differences, and many dwarves moved into the elven city to offer their services and expand their knowledge. In the Galena Mountains, Sarphil continued to flourish. Unfortunately, these days of prosperity did not last long. The last great king of Sarphil was lost in the dwarven city of Mount Throndor, beneath the mountain peak of the same name, and Sarphil withered under bitter clan disputes since no single family could claim legitimate lineage over the fragmented kingdom. What happened under Mount Throndor has been a mystery for thousands of years. Many attempts have been made to reclaim the lost riches and legacy of the last Sarphilan king, but powerful wards have prevented intrusion under the mountain, wards erected by the dwarves of Sarphil. Were the wards built to keep outsiders from intruding – or to keep something inside from escaping? An enterprising dwarven leader wants to find out, but she is going to need some help from a band of heroes. Horrors of Mount Throndor is a Dungeons & Dragons adventure of exploration, darkness, and terror featuring a lost dwarven city overrun by forces from the Far Realm and the journey to cleanse it once and for all. The adventure is designed for a group of 11th-level characters, and successful completion of the adventure should put the characters at 16th level. Here There Be Monsters Mount Throndor has become infested with madness from the Far Realm. During their journey to penetrate the ward and through the city itself, the characters are going to face gibbering horrors, unpredictable slaadi, fanatic stone giant cultists, degenerate star spawn horrors, mutant derro, undead dwarves, and countless golems. The ancient breweries of Mount Throndor have produced alementals who slither in the darkness, and a great dwarven war juggernaut named Big Hans stomps through the city. Legendary Villains and Epic Moments Though it has been sealed, Mount Throndor is not empty. The characters have opportunities to meet, interact with, and (likely at least) combat against powerful foes within the legendary dwarf city. A dwarf lich, a Far Realm spider goddess, an iron-encased demilich, and a melted flesh derro warlock monstrosity all await, along with a mind-bending force - Great Cthulhu! The characters have a chance to face an avatar of Great Cthulhu in the dwarven depths in the final confrontation of the adventure to free Mount Throndor and rid Faerun of a Far Realm invasion! An Adventure of Exploration Mount Throndor is a big, sprawling complex, a dwarven city with two major strongholds, a bridge system spanning a massive underground lake, and a deep mining complex. The scale is difficult to grasp and convey. Previous examples of adventures featuring these elements have included maps - usually lots of them, great spawling maps connected at ends to make huge subterranean dungeons. It is the classic image of a D&D dungeon crawl, and the map is a key component to its visualization. However, in this adventure, the maps are handled differently. There are certain areas, ususally outside the dwarven city itself, that include maps that are suitable for use at the game table, either in theater of the mind style or grid-and-miniatures. Mount Throndor itself is presented with an abstract map, and exploring it utilizes the exploration procedure outlined in Appendix A. Characters traverse the huge subterranean system using this abstract system, and during their travels they are going to run into random encounters and sites with more interesting and complex encounters.

It begins in the marketplace or main square of a town when the calm, peaceful day is interrupted by a hulking golem trouncing through town, smashing objects, and attacking townsfolk. The party witnessing this should intervene and stop the rampaging golem with combat or by luring it into a nearby warehouse to trap it so it can be damaged and, eventually, destroyed by the town guards. When the party examines the golem’s remains, they find bones encased in the metal armor and the name 'Quartztoil' written in gnomish script. The town guard explain that this is the eighth construct they have encountered in the area in the past six months. The party can then go on to investigate the name 'Quartztoil', leading them to learn of an old, gnomish, aspiring artificer, Penaral Quartztoil, who had a lab and workshop in a tower in the nearby mountains, but who has not been heard from for close to a century. Published by Nord Games

The shrine on the edge of town has been little more than a landmark for generations – but now eerie runes have begun pulsing across its surface, and rumour has it a dark force is growing. Now the party must investigate the threat, and destroy whatever lurks inside the Hall of Lament once and for all. The Legend of Zelda meets Hellraiser in the latest adventure from Chris Bissette, creator of Bulette Storm! Breaker of Chains is a 4 hour old school adventure, featuring tricks, traps, exploration, traps, and ritual sacrifice. Never again will your players waltz into a dungeon convinced that you aren’t willing to kill them in new and horrible ways! Published by Loot The Room

To stop a devastating rampage of giants across the land, the party must venture into the lair of the stone giant thane Arnak to uncover the truth about why he has broken his peace with the neighboring dwarves. In the process, they will have the opportunity to retrieve important symbols of the fight against the giants and uncover a dangerous excavation. The adventure is part of the "Against the Giants" series originally by Gary Gygax, hence the writing credit.

The renegade magic-user Bargle is wanted, dead or alive. Rumor holds that he dwells in the bowels of a nearby abandoned keep, performing all sorts of foul sorcery. Only the truly brave, or perilously foolish, would dare to challenge Bargle in his own domain. Expanded dungeon of the BECMI red box sample dungeon.

A genius inventor - Anthony Karstark, founder of the "Karstark Inventions", has recently reached a new level of reclusiveness, when he stopped showing up at his company events. A concerned friend and employee, Holly Amberfell, hires an adventuring party, to figure out what happened to him. As adventurers enter and explore the quarantined manor of the great inventor, they have to deal with his mechanic inventions, figure out minor mysteries of past and present, and finally - face Anthony himself, changed by a strange disease into a Slaad-spawn. Guesting at Artifice Manor is an 8-10 hours long mystery and exploration adventure, that should roughly take two playing sessions (or can be squished into one - suggestions on how to do it are inside the book!). It is optimized for 4 to 5 characters of 8-10 levels. This adventure can be used to kick-off a campaign, exploring the origins and history of Slaads.

A quick-paced exploration of the magic tower, home to the great Solomon, the Master Conjurer, an expert in fiendology. Adventurers have to find Control Orbs to disable the tower's security system before it destroys them, and discover the secrets of the tower in the process. Their progress will be ushered by a seemingly helpful entity with nefarious intent - Zarloxar, the blue Abishai. The success of adventurers could also finally spell freedom to the fiend... or not if players, under stress, will realize the trickery in time. Part of "Detailed Encounter" series - each "Detailed Encounter" - features new monsters with unique stat blocks, new magic items, a custom battle map, and detailed NPCs. It also has story hooks and advice enough, to quickly turn it into a separate adventure!

In the center of Lake Encarthan looms the dreaded Isle of Terror, accursed land of mystery and treachery. Hidden within the island's negative energy storms, the secret treasure city of the wizard-king Tar-Baphon has lain sealed for centuries. Now masked cultists have opened the golden city of Xin-Grafar to claim the wealth of the legendary city for the Living God Razmir. Can the PCs track the cultists through the poisoned swamps and blasted wastelands of the Isle of Terror to the City of Golden Death itself? And what forgotten dangers will oppose them as they struggle to prevent a dark faith from spreading across the world? Part 3 of the Price of Immortality trilogy.

A book donated to the library-city of Candlekeep details how the previous owner created a mansion in a pocket dimension and what the command word to enter is. The gateway was recently discovered, and the characters need to enter the mansion to retrieve the researcher who rediscovered it.

Legends of a "mountain of gold" provoke a mad scramble for a mysterious book laden with clues to find certain statues around the city, which themselves hold additional clues leading to the hiding place of the fabulous treasure. An adventure for using old-school advanced rules with twists and open-ended problem-solving in a city rife with overt treasure-hunting and covert Byzantine plotting by multiple factions. Published by Coiled Sheets of Lead

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.

Long rumored to be haunted by eerie specters, Kincep Mansion has stood for years, mostly untouched by nearby townsfolk. Now something is preying on the local villagers—something that comes from the house. Pgs. 46-69

"Auranorex, the greatest gold dragon in the world, is dead and his kin are looking for answers. To uncover the mystery of his demise, the heroes must travel to the one place forbidden to all mortals: the dragon graveyard. Guardians of Dragonfall is a mid-level adventure written by Anson Caralya that has the players investigating the untimely death of a dragon. Violating the dragon graveyard is a death sentence and the heroes must risk their very life if they are to uncover the secret behind Auranorex’s fate."

"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

Deep below the anarchic city of Kaer Maga, someone—or something—has begun stealing corpses from the city’s most prestigious tomb, the Godsmouth Ossuary. Fearing the worst, the clerics of Pharasma in charge of maintaining the crypts quietly call for aid, not wanting to risk their own members in combating whatever horrors may have crept in from the tunnels and hidden chambers of the legendary Undercity. Beneath the infamous crypt lies a temple from an ancient empire devoted to sin, and a former Pharasmin cleric whose weathered his goddess’s wrath to create an army of undead minions, their dead flesh standing ready to support his heretical plans.

A killer is stalking the warforged of Sharn. Some say the murderer is a vengeful spirit, while others blame human bigotry and fear. Can the adventurers expose the truth that lies hidden in the depths of Sharn? Steel Shadows is a D&D adventure suitable for four characters of 7th level. This adventure is set in the city of Sharn in the Eberron campaign setting. Since this is a mystery themed adventure, at least one of the characters should have the Investigate feat. The adventure includes a sidebar for scaling the adventure for lower and higher level characters.