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

The Dread tunnels of Ruxbar were created by a cult of a lesser evil deity of the giant pantheon, known as Jargain to serve as a planar gate in hope of bringing chaos and destruction to the natural order of the world and power to the one who would control the gate. Ruxabar was the high cultist who completed the ritual but to his surprise nothing of what he expected came through the gate. Plague creatures, toxic gases and vapors, diseases of all kinds and decay lay quick waste to him and his cult. For some time the gate remained open and the settlements nearby were afflicted with diseases never seen before. The nearby town of Stagwood was quickly abandoned due to the plague. Rumor has it that the gods have weakened the gate and the cult has been destroyed. The remaining villages that managed to somewhat resist the plague are now hiring brave adventurers to venture into the tunnels and close the planar gate for good! Are you capable enough of surviving the horrors that reside in the Dreaded Tunnels of Ruxabar? Published by Mistfactor Press

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.

April, 1453. For a thousand years, the Byzantine Empire has been civilization's guardian, carrying on Rome's legacy. Now 100,000 battle-hardened Turkish warriors have surrounded the great city and are making ready to storm its mighty walls. Find the young empress - if she even exists. Stand alongside the last Roman emperor in a climactic fight to the death. Fight Vlad the Impaler, nastiest of the Sultan's allies. Meet the Eastern world's most exotic temptress. Wield new weapons: Greek Fire, arquebuses, and the Great Cannon. And as the Turks pour into the breaches, opportunities to hack abound. A stand-alone adventure, or use its detailed background as source material for your own campaigns! Published by Avalanche Publishing

Heroes are needed in the mountainside town of Shibai—though thought to be spared from the horrors of the demonic Mists of Akuma, recently the supernatural haze has started to fall onto the settlement and a monster lurks through the evil fog. Despite the presence of the infamous Mubo Brothers, hired by the local mayor, a Sukochi bengoshi calls upon the party to get to the bottom of what ails Shibai. The truth of the matter lay within Robai Shita Temple, though what the adventurers find inside may see them undone!

In the town of Bellhold, it's not difficult to realize that something is wrong. Everyone is irritable and suffering from nightmares, children are missing, and the local adventuring company has been gone for a week. Yet the townsfolk's headaches are sure to pass, so the mayor is not especially worried. He should be. Of Sound Mind flings you into a maelstrom of trouble, for the situation is much, much worse than it first appears. Before your investigation is over, you will be dangling from cliffs, descending deep into a mountain's bowels, uncovering lost hoards of treasure, fleeing from people you thought were friends, and desperately trying to outwit an enemy that is far more than you could ever imagine. The fate of thousands hinges on your success or failure. Think your up for it? Published by Fiery Dragon

Jinkies! Uldryn Beauregard is dead—and he’s left one million gold to anyone who can survive the night in his haunted mansion! But spooky things are going on, and nothing is as it seems. Luckily, Mystery LLC is on the case! A Night of Fright is a parodic one-shot adventure designed to be played in a single four-hour session by five players. In a loving send-up of classic mystery cartoons, players will take the role of one of four meddling heroes—or their talking gnoll! Explore a haunted mansion full of traps, frights, spooks, scares, ghosts, ghasts, and ghouls to uncover old Uldryn’s secrets before it’s too late—for this is no run-of-the-mill real estate scam. There’s real danger in the mansion and Mystery LLC will need all the help they can get!

Trouble festers in the old sewers beneath the fishing village of Sandwall. A bandit king extends his slimy grasp, mutated goblins prowl the winding tunnels, and aquatic abominations lurk within the polluted waterways. It’ll take a particularly foolhardy band of adventurers to deal with these labyrinthine sewers ... are you up to the task? Published by Absolute Tabletop

The adventure takes players from a town devastated by an unexpected flood, through a drowned land where nature is turned upside down and desperate families cling to the roofs of their ruined homes, hiding from the monstrous products of a disordered world, through the strange tomb of an ancient race, to a profundal zone, hidden for millennia and now exposed, and finally to the Observatory itself, an eerie abandoned treasure palace, where they will encounter a pale and unexpected terror which will seek to claim their lives. The adventure is suitable for a lucky mid-range party, a stupid high-level party or an exceedingly clever low level party. It is difficult, with a meaningful possibility of character death. Should you find them, and defeat their guardians, the treasures of an ancient culture will be yours. At the final point of the Observatory is a glimpse of another world. Published by False Machine Publishing

A level 2–3 sewer adventure by Glynn Seal. PCs plumb fetid sewers and recently-revealed secret halls, in search of a lost worker. In these forsaken chambers, they may find answers and treasures, but may also come face-to-face with a bloated monstrosity and its depraved followers. For Old-School Essentials (OSE) Included as one of four adventures in "Old-School Essentials Adventure Anthology 1"

Tales of the cursed pyramid and the sleeping tomb of the Mummy Bride have long been a traveler’s tale, passed along by wayward explorers and greedy plunderers alike. Deep within the verdant jungles of the south, amidst a Green Hell of impenetrable jungle, savage cannibals and ancient myth, lies the shattered remnants of a once-powerful civilization and the terrible gods who ruled over them. Rumors swirl of untold riches and unplundered magic for those brave (or foolish!) enough to claim it. Will your players survive… and what will be left of them? The Jungle Tomb of the Mummy Bride is an old school, grindhouse-style combination of classic role playing adventure and devilishly-designed dungeons for levels 5-7, cram-packed with b-movie goodness to challenge even the most seasoned of adventurers. It’s a module that could only have been made in the primitive jungles of man… where life is cheap! Published by Planet X Games

The Dreaming Caldera involves the players infiltrating a volcano teeming with monsters that are intent on constructing a chaos god. The players must navigate through the hostile environment, disrupt the monstrous activities, and ultimately prevent a catastrophic event. 27 keyed locations Written for the Old-School Essentials (OSE) rule system

Vaylek the reclusive hydromancer did not often leave his seaside tower. Now he is missing. What strange and magical secrets lie within? What deadly perils and grotesque creatures might call that tower home? The mysteries of his tower await the brave and resourceful! This 5e ocean-themed adventure is intended for player levels 1-3 and contains: 6 levels of maps and exploration A floor filled with aquariums containing new and wonderous sea creatures A secret lab 6 new monsters--including Frankenlobster, Saltwater ooze, Sea gobblers, and Sharkdogs! Wandering monster tables and descriptions of what the monsters are doing New magic items An overland map An optional adventure setting

A short adventure for the Midnight campaign setting from Fantasy Flight Games. Harried by pursuing Shadow forces, the adventurers take refuge in the fissures of a vast glacier. In these icy caverns they battle the risen remains of an orc tribe and make contact with a powerful potential ally.

Introduction No frills, here. No fancy charts and tables. No art to dazzle your eyes. Just a crawl; that happens to have a bit of a background, and a (group)death-dealing Bad Ass! waiting for the characters. How you run it is your business. What you delete, exchange out/in or modify is up to you. You can be as kind and patient with the players as you like, or let the chips fall (dice roll) where they may. You can allow pre-rolled characters, provide pre-gens yourself, or let the players bring their own, favorite character they have worked hard to get to the levels indicated; remind them, if the latter, that character-death is part of the game! I issue only the following comment: if run as it is laid out , it is nearly certain that at least one character, and as many as all of them, might die during the adventure.

An Adventure for Odysseys & Overlords Standing on a lonely, bare mound in the bottom of a dell full of swirling fog, a castle from the time of the Schism crumbles, forgotten. Inside, treasures—and terror—await. A writ of salvage has been posted in Chandra's Haven: 500 gold coins to the brave adventurers who find Misthollow Castle and secure it for Salamon Castos, a wealthy merchant. Castos claims to be the scion of the noble family which ruled Misthollow and built the castle generations ago. Castos grudgingly agrees to allow the characters to keep whatever they find in securing the castle, though he insists on right of first refusal on anything of value. The Odysseys & Overlords Player’s Guide is available at https://www.drivethrurpg.com/product/275042/Odysseys--Overlords-Players-Guide The Odysseys & Overlords Game Master's Guide is available at https://www.drivethrurpg.com/product/275040/Odysseys--Overlords-Game-Masters-Guide

An oasis exploration and lava-filled obsidian dungeon crawl for 4-5 players of 5th to 6th level. Battle elemental evils, save captured sandworms, claim unique elemental magic items. A malevolent and ancient elemental lies imprisoned within a lava-filled obsidian cavern. Explore the hidden passages before his shackles break and havoc is unleashed upon the nearby oasis! 10 pages of oasis exploration and lava-filled dungeon peril! Statblocks for the life-cycle of desert sandworms, plus three unique elemental magic items like "Summer's Bane" - an armlet of compacted ice that grants the wielder a magical bow, and the "Embershard" - a dagger made from the jawbone of a red dragon that imbues the wielder with elemental magics. Run the adventure your way - drop the PCs off at the dungeon entrance and explore the perlious cavern, or let them cavort in the oasis before uncovering the lingering threat. We hope you enjoy the desert oasis and obsidian-carved dungeon crawl from the Heart of Arcana.

The Doom Desert in the Decanter of Delirium is an exotic OSR romp through a mysterious world of riddles, puzzles, inscrutable denizens. 5e compatible, this love letter to psychedelia is as vivid and beautiful as exciting and surreal. Get wrapped up in conversation with the dead drunks at the last saloon on earth, solve the sphinx riddle and discover the secrets of the Ziggurat, or break bread and wine with whispering harpies or the sun itself. This compelling narrative is written by Austin Holm and captures the exploration, social, and challenge pillars of a great game with the deft prose of a poet. With art by Maya Bee that captures the essence of the adventures many stunning scenes and characters. Your players will thank you for this one.

In this adventure, set in the Albadian wilderness, the party will be in contact with a nomadic Orc tribe, whose leader asks for help on dealing with an old and powerful Blade beast named Vófour. This one-shot features 2 new magic items and 1 new stat block for a more powerful Blade beast. Scarred Lands setting

Andrew Engelbrite's gripping tale of intrigue and honor takes the adventurers from a chance encounter with a kindly elder matron in Hofuku Prefecture, across the sea to the polluted islands of Uragi Prefecture, and into a deathtrap of enslaved water folk under the control of madman! What you'll find in Honorable Wills: Kittiyona and Ikkitongaku: Details for 2 of Soburin's capital cities (including full page maps) 18 new monsters and NPCs ranging from the heirs Torimu to the mythical umibōzu sea monster Cosmetic Augments: A new type of invasive technological enhancement and the Bioartist Monastic Tradition Torimu Keep: A 20 page, 3 level, fully-mapped dungeon An epic module that will end with the PCs reaching 11th level! Published by Storm Bunny Studios