Four great and powerful heroes travel in search of adventure. Led by Mordenkainen, wizard without peer, they have come to mysterious Maure Castle, a forlorn and foreboding place, source of wonderment and awesome adventure, following a strange and terrible story. For, somewhere deep beneath Maure Castle, from whence no person has returned alive, there stands two massive iron doors - doors without latch, lock, or handle - the Unopenable Doors. And if the doors are opened, what then? Such potent evil, such terror lies beyond, that even the bravest adventurers may quail before the ultimate test! Mordenkainen's Fantastic Adventure is a challenging adventure for high-level play. Four original characters from Gary Gygax' famous Greyhawk campaign are included for your use. Can you meet the challenge? Can you survive what lies beyond... the Unopenable Doors? TSR 9112

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

Freeport is a fantasy “free city” you can place in a fantastic setting. Its basic premise is a pirate city gone legit… at least on the surface. In truth, the pirate tradition is alive and well in Freeport, but camouflaged by a veneer of respectability. These days the city’s pirates are privateers, legalized pirates Freeport loans out to the highest bidder. You’ll learn more in the short history of the city that follows. This should help give you a taste of the flavor of Freeport before the adventure begins and the given background is all you need to run this adventure. It is an ideal starting place for a new campaign as the player characters find themselves stranded in Freeport after a deal goes sour. A seemingly simple job plunges them into the strange underside of the city, where they uncover secrets worth dying for. Death in Freeport is the first from the Freeport trilogy, together with Terror in Freeport and Madness in Freeport. Synopsis: Death in Freeport drops the player characters into the midst of political and magical intrigue, as the hidden Brotherhood of the Yellow Sign manipulates events to bring its dread god to the world. Freeport is still a bustling center of trade, but evil currents run beneath the surface. There are secrets here, and questions unanswered. The characters will undoubtedly learn there is more here than they expect in a simple seaport. The question is, will that knowledge kill them? As the adventure begins, the player characters (PCs) have just come to Freeport on a merchant ship. While on the docks, the PCs are attacked by a press gang, who mistake them for easy marks. The press gang is handily beaten off; since they are unused to real resistance. A bookish young man named Brother Egil then approaches the PCs. He says that he’s been looking for a group that can take of itself, and that he has a job for them if they are interested: finding a missing librarian. The missing man, Lucius, disappeared two days previously, and Egil is eager to find him. Egil gives the PCs some background on Lucius and his strange behavior. The PCs are then free to investigate: They are likely to visit Lucius’s home, the temple to the God of Knowledge, and an orc pirate ship. This should form a picture of Lucius as a man searching for his own past—who found something he wasn’t counting on. Following a trail of clues, the PCs learn about the Brotherhood of the Yellow Sign. With a little luck, the PCs can trail the cultists back to their hideout, penetrate the lair, and discover secret tunnels underneath it. Deep underground they find degenerate serpent people, and eventually Lucius himself. The librarian has been tortured badly and will die without aid. The PCs also have to deal with the leader of the cult, a man they may recognize from the temple. When the cult priest is slain, they are in for an even bigger surprise. He was not human at all, but a serpent man in disguise. What this means for Freeport only the gods can say.

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.

A terrible and unnatural fear has come over the people of Waterdeep. In a matter of weeks, dozens of people are missing, and more disappear each night. Rumors tell of curses, phantasms, demons, and possession. In truth, these are the victims of tiny parasitic brain maggots unleashed by the illithid dragon called Brainstealer. The fate of its victims fall on your shoulders, as you discover his lair and prepare to raid it.

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 logging town of Falcon’s Hollow has been through rough times—first a kobold tribe abducted the town’s children for an evil ritual, then an unknown force reanimated the defeated kobolds to attack the town. Now a horde of zombies approaches and a mysterious evil gathers power in the north, tainting wildlife and the buried dead, its presence hinting at ancient evils better left undisturbed.

The Temple of the First Fire is a 5e adventure in which a group of heroes must stop an ancient, evil witch known as the Raven Mocker from stealing the eternal flame that lights the sun. If the witch succeeds, it would plunge all humanity into endless darkness. It features a corrupted guardian, a temple suspended from the heavens by divine chains, and a series of unusual encounters, as well as four third-level pregenerated characters! Also available for Savage Worlds. Published by Sigil Entertainment Group.

The Blood of Ancient Battles Rises An eternal demonic war draws dangerously close to an end, threatening the balance of all existence. At the crux of this chaotic feud resides a legendary terror fixated upon immortality at any cost. Only the most powerful heroes can hope to defeat a force that lies beyond the influence of the gods. "Bastion of Broken Souls" is a stand-alone adventure for the Dungeons & Dragons game. Designed to challenge 18th-level D&D heroes, it pits them against some of the most powerful beings in the multiverse. This adventure is the last element in a collection of adventures designed to take characters from beginner to advanced levels of play (although no previous adventure need be played to play this one). "Bastion of Broken Souls" features an additional 16 pages of content for the same price as most of the previous adventures in the series. WOTC 88167

A mysterious package, a forgotten guild, a lost heir, and an undergoing conspiracy. Unfold Neverwinter’s dark past in this urban-intrigue D&D 5th edition adventure. The characters are called to guard a mysterious package that arrives the city at night. A well-planned robbery and the fact that this package was ordered by Lord Dagult Neverember himself alerts them that, this is not going to be an ordinary task!

Now bound to Queen Abrogail by infernal contracts, the villainous adventurers are tasked with destroying the Glorious Reclamation's headquarters in the former citadel of the Hellknight Order of the Godclaw, where they face a gold dragon ally of Iomedae herself! Only if they can survive the terrible onslaught of this fearsome foe and secure the citadel from the revolutionaries can the vile characters succeed at their quest—to perform an evil ritual, using the dragon's head to craft a legendary weapon capable of defeating the Glorious Reclamation's army of valorous knights once and for all.

The Assassin's Knot is a sequel to The Secret of Bone Hill, picking up on themes from that module and shifts them to a new locale. The player characters must solve the mystery of who killed the Baron of Restenford, with evidence pointing to somebody from the town of Garrotten. The scenario describes the town and its castle. The Assassin's Knot module is different from most of its contemporaries in that it contained no dungeon or dungeon-like area. The longer the players take to find the murderer, the more unfortunate events occur in the village. The village, Garrotten, is reputed to be the place to go to have someone killed. The entire village shuts down when the Baron of Restenford is found dead, mutilated beyond the possibility of magical restoration. Three small clues are all the player characters have to unravel the mystery. TSR 9057

Vault of the Blood Mage is a deadly one-shot dungeon adventure for 4-6 8th level characters. Player Characters find themselves locked in a dungeon room with no memory of how they got there. Inflicted with a magical disease that is slowly turning them into mindless zombies, the dungeoneers have to work quickly to find the antidote and escape the vault before succumbing to the deadly affliction. To do so, the characters must avoid deadly traps, fight unique monsters, and solve fiendish puzzles.

Sometimes its better not to know... Citizens are turning up in the city in catatonic states, alive but devoid of personality. Are they the victims of an illness or disease, or is there something more sinister at work? Encountering one of these poor souls, the characters are drawn into an investigation of politics and treachery, seedy underworld dealings and rooftop chases, culminating in a fiery conclusion. Can they discover the cause of this epidemic before it’s too late?

"The southlands of Eor are being despoiled. Merchants will no longer run their caravans on the main highway past the quiet village of Waycombe. The peasants are fleeing their lands, and all are demanding protection from the powerful Count of Eor. The goodly count has sent a troop of his trusted fighters to exterminate the brigands believed responsible for these outrages, but weeks have passed, and still there is no word from this force. Now John Brunis, Count of Eor, has turned to you for aid. After taking counsel with the High Priest of Eor, he believes that a small party of cunning, bold adventurers may succeed where armed might has failed. You find yourselves faced with many mysteries! Why has robbery suddenly erupted in the peaceful southlands? How could mere brigands be as powerful as the foes described to you by their numerous victims? Is this really mere robbery? Or is there some truth to the rumors, told only in hushed whispers, about the beginnings of a hideous plot being hatched by an ancient, vile, and evil foe of all mankind?" Eor is beset by marauders and lizardmen of a boldness not seen in years. Hired by the Count of Eor, the party is tasked with tracing the source of these foes and eliminating them for the safety of the realm. After a set piece combat in Count Brunis's castle, the party must trek across Eor's wilderness, eventually coming to the Great Southern Swamp beyond the village of Waycombe. With further exploration they can locate the Ancient Temple which serves as the tomb and stronghold of Sakathas, the vampiric LIZARD KING! TSR 9055

A Welcome Scourge is a murder investigation for a party of 8th level characters. It takes place in an outpost town called Newfort, but you can easily adapt the adventure to your own setting. "There have been several high-profile vampire murders in Newfort, but the locals seem to be fine with them - probably because all of the victims have been infamous and despicable. It is up to your heroes to glean clues from around town, track down the vile creature, reveal a foul conspiracy, and beat out competitors hunting for the same bounty."

The knightly order known as the Glorious Reclamation continues its crusade against diabolic Cheliax, conquering the town of Kantaria, where the goddess Iomedae once ruled as a mortal. The villainous adventurers, now official agents of House Thrune, must retake the town, depriving the knights of a valuable holy site. Can the evil characters earn greater infamy and prestige by dealing the Glorious Reclamation a serious defeat in their most substantial territorial gain so far, or will the knights' rebellion continue unchecked across Cheliax?

Beginning in the prison of the Castellan of Whitecliff, this campaign arc takes the players from level one to four, presented as a sandbox area in a lonely and gritty peninsula full of villains and opportunities for the players to explore. Much like Stonehell, but for regional play. Published by Coldlight Press

This AD&D scenario is designed to be a humorous departure from regular adventuring. The "heroes" are a fellowship of monsters on a quest to recover a magical item for an orc chieftain whom they have displeased. Having lost the map given to them, they must gain entry to a frontier outpost - probably by sneaking through sewers - and recover the map from a locked safe in the commanders quarters. Once they again have the map, the monsters must travel overland to an abandoned elven witches' temple on the shore of a mountain lake, where they will find the object of their quest. Pgs. 23-32

This material was originally published as two separate adventures, D1: "Descent into the Depths of the Earth" and D2: "Shrine of the Kuo-Toa." Contained herein are referee notes, background information, maps, and exploration keys intended for use with the Advanced Dungeons & Dragons rules. The adventure can be used alone or as part of an extended adventure that begins with G1-3: "Against the Giants" and continues with D3: "The Vault of the Drow" and Q1: "Queen of the Demonweb Pits." TSR 9059