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

Visit Marlinko, a borderlands city where life takes a strange fever-dream cast, in this 72-page urban adventure fantasy supplement. Part city-setting, part full-blown adventure, Fever-Dreaming Marlinko is a stand-alone companion to the Slavic acid fantasy weirdness of the Slumbering Ursine Dunes. Contains background and hooks for the city's four city quarters, two complete dungeon adventure sites, two new players classes (Mountebank and Robodwarf), Chaos Index with escalating events/triggers scattered throughout the city, news generator with full news briefs and hooks, and tiger-wrestling mini-game.

The Red Bastion - the prison of a dwarf ghost princess... A 15-room dungeon for levels 2-3.

By a well-trodden road lies the estate of the Eryx family. At some point the estate was converted into a roadside inn. The merchant Robert E. Wardlove has received an urgent letter from his daughter Derleth. She begs of her father to arrive in haste to the faraway inn and take her back home safely for the Evening of Still Streets draws near... Enigma of the Eryx Estate is a break from the usual dungeon crawls of the Shadowdark RPG system recommended for characters of lvls 1-3. During this adventure players get to solve a murder and the mysteries that surround it. Exploration and intrigue are emphasized as player characters gain XP for uncovering secrets. Combat is in a more minor role during this adventure, but if the players don't figure out the mystery by midnight, they might be in a fight for their lives. The adventure is designed for ease of running with punctual room and character descriptions.

Come visit the acid fantasy mini-sandbox of the Misty Isles, a hellish pocket plane that's brutally displaced a bucolic paradise. Marvel at its massive grub-ridges, shake at the body horror of its protein vats—and watch as your players dynamically unleash the Anti-Chaos Index through their own in-game actions. Misty Isles of the Eld is a stand-alone sequel to Slumbering Ursine Dunes and Fever-Dreaming Marlinko. It contains: Four dungeons. The Vat Complex (with its menacing sealed off-west wing, body-horrific industrial process and pocket dimensions), the flying god-prison Monument Five, the meth-fruit Plantation House and Colonel Zogg's Pagoda Bunker. Full “extra-planar” pointcrawl. The wilderness crawl spreads over one main isle and two smaller islets subdivided by massive, movable grubs. An “Anti-Chaos Index.” Through their actions the players shape the very reality of the Isles. Sometimes for the better, sometimes for the worst, but always for the weird. A slew of new otherwordly monsters. A large collection of bizarre technological Eldish artifacts and treasure. Includes a random generator for miscellaneous artifacts picked up. A new psionicist player class, the Psychonaut, with a soft scifi twist. Including its own powers and mutations.

The Haunted Hamlet and other hexes details four unique modular locations for your game. Made for old school essentials, but can easily be used with other old-school systems or even 5E. The four locations detailed in the zine focus on gameable content and being easy to use at the table. The locations are not connected to one another and can be sprinkled onto your campaign map however you like, or run as one shots. The PDF is graphic and art heavy and utilizes random tables and other tools to make it easier for GMs to run in a pinch. Details: 40 pages Single column text 8.5 x 5.5 aspect Black & White Bookmarks Four hex locations Random tables A rival NPC party A sky merchant A one page town Two hirelings

Weeds trail the water. The sandbar just off the shore shifts. A reptile rumble, a splash. Now a gaping maw. A roar. Claws splintering wood. The boat capsizes. You are in the river, now. He is the Bachelor: a pale crocodile, as long as five men lying end to end. He swallows hunters, families, trading skiffs. Prospectors fear to go out. Witches mutter. They say he causes landslips. They say he is a god, a curse -- an old, old sin, staining the river. They say he has been killed, before. He is pulling you under. Lorn Song of the Bachelor is a 48-page riverine adventure and dungeon crawl module, inspired by the crocodile stories of Southeast Asia -- particularly Sarawak. It features: Tragedy, a bloody curse, and a love gone very sour Open-ended factional interplay between local villagers, a foreign merchant Company, and a giant supernatural crocodile -- and its motivating spirits Multiple random tables, including: magical fabrics woven by god-possessed craftspersons; trinkets of a now-fallen Monkey Empire; medicinal herbs and animals 19 new creatures, including: mind-controlling catfish; golems made of teeth; a pregnant tiger spirit Wilderness travel up an enchanted river An extraplanar dungeon complex that can change the surrounding environment A morally complex treatment of colonialism, within the framework of an adventure module A giant crocodile who really wants to eat you

Prison of the Hated Pretender is an introductory adventure for 4-6 characters levels 0-1. Originally published on the Dungeon of Signs blog, it is a short drop-in location-based adventure with a couple of interesting puzzles, a lack of "book" monsters, implacable foes with an obvious weakness, and a very weird roleplaying opportunity. The new 2020 edition republished by Hydra Collective adds suggested guidance for new Dungeonmasters who grew up with 5th edition and don't know how old-school works. Stats for both BECMI and 5th edition, and setting neutral (though there are some implied things about the history of the world).

In these lands of eldritch goo, it's a fine line between victory and a sticky situation Tzork, the sentient globe of glass, wasn’t exactly born from a grand spell—it was more of a cosmic "oops". After a backstabbing disciple named Theridus offed his master and snagged the relic, he promised his followers unimaginable power. But instead of turning them into terrifying demons, Tzork turned them into puddles of goo. Now, the once "glorious" cult's mansion is less a temple and more a swamp of melted, failed adventurers, attracting only the most reckless of treasure hunters. 'Morass of the Melting Men' is an adventure for Knave 2e, suitable for low-level PCs. The adventure revolves around an extremely powerful sentient magical item that has gone out of control, melting all the nearby people and turning what was once an evil temple into a swamp of slime, filled with bones and eyeballs. In Morass of the Melting Men, players enter a location flooded with a magical liquid exuding chaotic energy. The longer the PCs remain within the swamp, the more they suffer the unexpected effects of this alien magic. Step inside this morass if you dare — goo and treasure awaits... but mostly goo What you'll find here: A complete 40-page adventure A 20 room dungeon map Several new (and bizarre) magic items such as the magnificent Tray of Force and the powerful Theridus' Head. Several wild random tables of weird and gooey outcomes

‘Wyrd’ things are afoot. This town might seem like your ordinary, post-apocalyptic-now-turned-fantasy locale, but it is not! Fell Cults have begun to take over and it is up to the brave adventurers to stop one in particular: the Cult of the Shield Ghul. But the ‘Wyrdness’ doesn’t end there. Though this adventure can be used to facilitate your typical wander-around-and-kill-everyone-to-take-their-stuff-type scenario, it also includes a sinister (and frankly genius) plot, feuding factions, plenty of hyphens, not to mention bizarre NPC’s and situations to either interact with or stab to death.

The manor of Willowby Hall is under siege by a giant, enraged at the theft of his magical goose. The band of thieves has taken shelter within the manor's crumbling walls, cowering with their ill-gotten poultry as the building shakes itself apart. But something else is stirring. The giant's rampage is slowly awakening a Death Knight from its black slumber, and once it rises it will call on the bones of the manor's old residents to drive out the intruders. Will the party loot the manor of its ancient relics, or succumb to the blades of its skeletal guardians? Who will make off with the goose and its golden eggs? Will anyone survive the giant's onslaught? The only way to find out...is to play.

The ancient world of Harth is dying, but you’re going to die even sooner if you can’t escape from Frostwyck. You’re lost in a frozen forest of deadly predators and mysterious recluses. Your only refuge is the tiny village of Frostwyck, where metal is rare and kindness is rarer. And there are worse things in the shadows than mere bloodthirsty beasts. Witches haunt the groves of the north. Most keep to themselves, content to guard their secrets and powers. But one torments them all. Dama Zhadna has cursed the village so that none can escape. And now you’re trapped here. You’re going to die here... ...unless you can escape from the Witches of Frostwyck. Just a few things players can do: - Escape from a prison barge - Free demon souls from a giant spider-house - Find a charming witch-lord hiding with his pet dragon - Evade a merciless warrior zealot who is hunting them - Discover the ancient secrets of the Elder Fey - Collect the "cunning tools" created by the hedge witches - Collect the eldritch weapons crafted by the ancient elves - Save a little girl made of snow Intense Factions! Will you help the Temple of Virune to eradicate the last of the witches? Will you help the witch-lords retake power over the north? Will you help the Gray Sisters protect the village from the dangers of the forest? Or will you venture underground and help the Elder Fey to escape their prison and take their revenge? Four New Mentors! While in Frostwyck, players can meet many skilled NPCs who might be willing to train a worthy adventurer. If you can complete 3 days of training, you can learn one of 16 skills from either a Hunter, a Fighter, a Priest, or a Witch. New PC Background: The Vulgoth Hedge Witch! In addition to some unusual medicinal gear, select one of 6 creatures of the northern forest as your familiars, as well as one of 6 "cunning" items that you enchanted (and might explode in your face!).

"Something is weird about this party in 16th century Scotland! A famous thief stole a magical jewel and hid inside a castle where a party is taking place. Enter the party, find the jewel, escape with your life. In the first half of the adventure, the player characters will explore a weird party in search of the thief Jougal. They’ll likely piece together that this party is not “normal” and that this castle is not safe. In the second half, the baobhan sith will reveal themselves, red caps will set the castle on fire, and the PCs will find themselves locked in a burning hellhole. The adventure will likely change from a fun party-crawl into a stressful fight for survival. This is the NIGHTMARE PHASE." This adventure blends elements of horror, survival, and mystery, requiring players to use both their combat skills and their wits to navigate through the treacherous and evolving scenarios within Firnhirst Castle. Written for Cairn RPG

A 20-page adventure for OSE Save the wizard! A sunken cathedral on a quiet mountain lake hides a long forgotten temple to Mathanoga, God of Knowledge and wizardry. Abandoned by Man for centuries , but protected by the legend of man-eating fishmen lurking in it. Or until a few weeks ago the young wizad Elric embarked on its expedition. With help from the accademy of Greykeep he found the temple and began to explore it, hoping to uncover its ancient magical secrets. Now the wizard is missing and the accademy has put a bounty on its head: its weight in silver to whoever will find him and bring him home alive and well. Find magical secrets! Deep inside the temple are stashed many magical items, all sacred to the fishmen dwelling there, all worth dying for. Save Elric and the treasures will be yours! The Sunken Temple is an expert level Old School Essentials adventure for a party of 1-4 players. Perfect for a one shot or a random encounter in an hex crawl.

Among the snow globes that sit gathering dust there is one quite unlike the others. One is full of sand and an ancient library. Shake it and you’re transported to the dungeon. Here's what it has: Beautiful cartography from Dyson Logos 27 keyed rooms to keep your players busy for a few sessions A new enemy called the Mummies who do no damage but burst into sand that gets into armor and skin, spreading a deadly disease A sand golem Pharaoh who can multiply A twisted lich (or moderately low level) who collects teeth A sphinx searching for the answer to a riddle A few traps (including snakes and skin-burrowing scarabs) A treasure room that has roughly 10,000gp worth of assorted treasures, making it difficult to export It exists inside a magical snow globe, meaning it can fit into your campaign world with ease Has repercussions and ways to continue after the fact Basically this is a dungeon for a more Old School feel.

“The Lamia’s Heart”: Your party are contracted by the nascent master of an unsanctioned thieves’ guild. To earn his favour, you must steal a singular gem from the mansion of a prominent merchant. Purloining this gem, however, may raise the ire of the city’s official thieves’ guild; notwithstanding, the reward is significant.

Ancient port city on the edge of a desert. The city is stratified by social class and some of the slaves have formed a cannibal cult to Kthulhu. City + hexcrawl + dungeon. The Anthropophagi of Xambaala™ takes players into an action-packed realm of adventure: the mythical world of Hyperborea, a sword-and-sorcery campaign setting inspired by the fantastic fiction of Robert E. Howard, H.P. Lovecraft, Clark Ashton Smith, and others. This adventure is inspired by Robert E. Howard’s “The Man-Eaters of Zamboula” and by various short tales of H.P. Lovecraft and Clark Ashton Smith. It is designed for use with Astonishing Swordsmen & Sorcerers of Hyperborea ™(AS&SH™), a role-playing game descended from the original 1974 fantasy wargame and miniatures campaign rules as conceived by E. Gary Gygax and Dave Arneson. AS&SH is compatible with most traditional fantasy role-playing games (c. 1974 to 1999) and their modern simulacra, such as OSRIC™ and Swords & Wizardry™. This work is both a setting and an adventure. The setting describes the town of Xambaala, noting key people, locations, and local lore. The adventure proper provides players with a variety of environments and the several factions fighting over them for their own goals. With a bit of skill and luck, stalwart adventurers may emerge richer and maybe wiser. The situation that will develop in Xambaala will be determined by the players’ choices.

NEVER MEET FORGOTTEN HEROES! Long ago a half-elf, half deer-centaur named Jayne led a small guerilla band against the armies of an evil fae witch. They prevailed at terrible cost. Monsters moved into her hideout-turned-sepulchre, still haunted by Jayne’s ennemies and companions, and a ghost longing to complete his vengeance... Adventurers will discover the fates and true faces of unremembered heres. Will they get out with forgotten riches, or become the latest victims of a centuries-old tragedy? A 39-room OSR dungeon module for character levels 5-7. Designed for use with the Old-School Essentials ruleset, compatible with most old-school pen-and-paper RPGs.

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.

(2017 ENNIE Awards Judges' Spotlight Winner!) THE MOST AWESOME ADVENTURE EVER Since the invention of the adventure module, there have only been five adventures that were rated the most awesome, the most epic. Broodmother Sky Fortress leaves them all behind. It’s got these creatures that are half shark. Half elephant. All badass. They fly around in this cloud fortress, wrecking everything in the campaign until the players step up to stop them. It’s all terribly exciting! And all brought to you by none other than the world-famous Arch-Mage of Old-School, Jeff Rients! As an added bonus, we’ve included a Greatest Hits of the ol’ Arch-Mage’s essays and game tools to build your campaign into the unstoppable juggernaut you’ve always wanted it to be. Your game won’t suck anymore! Broodmother SkyFortress: Buying any other adventure is just throwing your money away (includes "3.PF" edition stats by Jukka Särkijärvi because somebody somehow convinced me that would be a good idea back when this thing was being crowdfunded) Writing by Jeff Rients Art by Ian MacLean Graphic Design by Alex Mayo Cartography by Jez Gordon