Refugees in Mulmaster have had a fairly tough time, and that was before the disappearances. The few that return have been changed, refusing to believe that they were even missing. You have been asked by Mulmaster’s nobility to find the source of the disappearances and put an end to them. This adventure premiered at AMERICA's Cup 2018 in New Zealand.

Deep beneath the city streets lie the sprawling tunnels of a derelict sewer. Under the command of a vicious ringleader, a posse of thugs have claimed a forgotten undercroft as their own. In a shadowy mockery of the city’s grand markets above, they have set up their own trade, dealing in flesh to vile creatures and evil men. Published by Arcana Games

Below the streets of Waterdeep a new gang of goblins have moved in and have started stealing anything and everything. It now has become incumbent on the characters to go into their lair and deal with this rogue band of goblins.

Important: The adventure is 1e but it has monster conversion notes for D&D 4th edition The town of Highport, once a human community overlooking Wooly Bay from its perch on the northern coast of the Pomarj, fell prey to hordes of humanoids swarming out of the jungle-covered hills surrounding the settlement. Though the orcs, goblins, kobolds, ogres, and gnolls razed much of the place in their ferocious rampages, the smoldering ruins they left behind soon became a new kind of community, a place of trade between the humanoid “locals” and the unsavory human traders who have no compunction about doing business with them. Slaves are a commodity in ready supply in Highport’s market, since many pirates raid up and down the coast of the bay, putting fishing villages to the torch and filling their holds with captured refugees. Slavery has become a thriving business in the town, and rumors abound of a cartel of Slave Lords who run things from behind the scenes, filling their coffers in secret from the buying and selling of human chattel. The trade has become so prolific that the good folk to the north have grown tired of these depredations and decided to fight back. Forces of righteousness and honor have recently descended upon Highport, some openly and others in secret, in various attempts to destroy the machinations of the Slave Lords and abolish the abominable enterprise that has taken far too many loved ones from home and hearth. One such doughty servant of goodness is Mikaro Valasteen, a cleric of Trithereon. Mikaro slipped unnoticed past the crumbling walls of Highport with a single mission: to rescue and transport as many slaves to their freedom as possible. Mikaro and a handful of faithful assistants located a number of escaped slaves—as well as rescued a few more not sufficiently restrained and guarded—and shepherded them through the gates and beyond the reach of their humanoid tormentors, returning them to their lands and homes. This covert freedom brigade enjoyed remarkable success early on, since the servants of the Slave Lords were often lax in their vigilance and sloppy in their efforts to prevent loss of the “merchandise.” After one too many shipments never made its destination, the humanoids stepped up their security and the normal channels of escape from Highport closed to Mikaro and his team. He cannot risk exposure by smuggling the freed slaves through the gates as merchandise any longer, since shipments of goods are now regularly stopped and checked. No longer able to free the slaves in that manner, Mikaro began hiding his charges in an abandoned villa in a particularly rundown part of the town. Although they are safe for the moment, their numbers have grown unmanageable, and the priest fears it is only a matter of time before someone slips up and brings slavers to their doorstep. Ever more desperate to find a new means of escape from Highport, Mikaro has started work on a plan that is both daring and dangerous. He intends to use a series of old sewers coupled with natural caverns running beneath the town as an escape route to the sea beyond the walls. But he needs someone to clear out the creatures and pitfalls he knows lie within. Pgs. 2-27

The search for a missing girl leads PCs to uncover the re-emergence of a dangerous cult of Serpentfolk. This is a low-combat adventure, mostly requiring roleplay and investigation. NOTE: The Tales of Freeport that contains this adventure is NOT one of the versions currently available in the Green Ronin store. Those contain short stories. This is an older item that appears to no longer be available from Green Ronin. It is possible that the adventures within it have been included in other products since then. But I have linked to the original product on DriveThru RPG.

The city of Suncliff has so much trash they've devoted an entire quarter to it. naming the reeking ruins "the Stink" and piling garbage as high as the eye can see. But sanitation workers have been vanishing from the Stink at night, and only your heroes hold the key to solving the smelly mystery. Folks have been vanishing from the Stink, a disease-filled rubbish quarter of Sunhill. City officials recruit the heroes to investigate the disappearances, putting the PCs on the trail of fiendish Locathahs, followers of Incabulos, with ill plans for the surface world. Pgs. 47-69

Just Add Water is a sewer-based dungeon crawl that can be easily inserted into any adventure. All you need is a location with a sewer system and a reason for the party to explore it.

Peren, a guildless Devkarin collector of obscure relics has gone missing. The elf of shadow is in deep debt to the Orzhov as well as to the Rakdos performer, Ophyira. To discover Peren’s fate the party must descend into the Undercity of District Four, within the territory of the Golgari Swarm. Continuing the story which began with Off to a Weird Start, and picking up where The Palace of Pain’s Pleasures left off, this adventure is designed to be part of an ongoing campaign. For Dungeon Masters who wish to incorporate The Felicity Triskelion independently from the ongoing story, 10 Adventure Hooks (one for each guild) are included, giving The Felicity Triskelion flexibility for one-shot play or for inclusion in your own campaign!

Over the top low level dungeon takes you through the sewers to stop a blood worshiping madman his Kobold minions.

If you save only one kidnapped daughter this year, save this one. Rescuing maidens is a dirty job, but - you know the rest. On the road, the PCs encounter the aftermath of an attack on a small merchant caravan. The PCs must find and return Zenobia, the merchant's daughter. To do this, they must track, locate, and confront the unknown raiders while keeping the Zenobia's safety in mind. Pgs. 4-19 & 34

His holiness has summoned you to the great temple and asks a favor of you. He has explained that national spies have tracked down the notorious pirate/criminal, Molon Labe, has pulled into the port of Taco Del Toro. As an enemy of the state, the religious leader demands that he be taken alive. He has obtained a privateer to take you to the city known to be frequented by pirates and their ilk in order to catch the individual. He warns you that nothing good survives in the island city and to watch your back as you make your way through the mean streets!

Bringing Diablo II to the tabletop. The legendary Diablo and Diablo II computer games come to life with the release of the tabletop Diablo II: To Hell & Back roleplaying adventure. All a player needs is the Dungeons & Dragons(r) Player's Handbook (0786915501-8/00) to accompany the Diablo II game. Every level and all 4 acts of the computer game are represented in the tabletop mega-adventure, which will also include 64 pages of monsters, information for levels 1-30, and over 60 maps!

An investigative city crawl adventure for Shadowdark RPG (or any OSR-style system), designed for experienced players levels 1-2 Set in the decaying city of Brannam, players unravel a web of fear, blood, and buried secrets. A local alchemist has begun killing in secret, rekindling old fears of an old terror. The city's decline threatens to spiral into collapse, and far below, something older and hungrier waits to wake. This adventure includes: 3 separate dungeons (The flooded Sewers, the forgotten Catacombs, and the cursed Ruins of Edric von Braech's keep) Open ended design and layered mysteries with multiple outcomes and failure states A fully explorable city with random encounters, evolving factions and escalating panic. Custom rules for spell mishaps, nightly murder checks and decay events as Brannam unravels Modular content designed to drop into your campaign

Sorrowwraiths is an adventure path about hunting monsters, helping allies through hard times, and saving communities in a city that is almost beyond saving. Dive into an industrial dystopia of poverty, pollution and exploitation, where laws and morality apply only to the poor, where technological progress overtakes ethical concerns, and where myriad monsters and curses prey upon the population. The city has lost its last group of protectors and someone new needs to pick up the torch... Allies in the Dark is Part One (of Five) and takes characters from 1st to 6th level. The heroes are introduced to the city and its issues. They get to investigate the disappearance of the Lochtengren's previous defenders, rescue and recruit some of them as allies, and expose the schemes of those who have turned villainous.

This is an introductory adventure to Eberron and Sharn. It is written for 3-6 characters of levels 1 to 5. This adventure showcases the versatility of urban adventures in Sharn. The adventure takes a party of characters from the lowest and more dangerous parts of the city, the lower wards and The Depths, to the highest and most exclusive neighborhoods in the upper wards and the Skyway. This adventure has it all. There are roleplaying opportunities, underground exploration, interesting NPC's, a flying chase scene on flying vessels, and a BBEG with enough charisma to captivate any player.

Dirty rotten scoundrels. Carn Perrin needs an exterminator. A city is plead with ware rats. Its up to the party to find their lair and kill the rat king. Pgs. 38-55

Myriad, a city originally devoted to magical research, has been hidden and isolated for nearly a thousand years. Now, it has rejoined the world and an unseen struggle is taking place within its walls. A party of adventurers has been invited to enter the city and assist in its reintegration. Myriad's secrets, however, run deep and dangerous.

A roach thrall has infiltrated Sharn's highest circle of power, the council, and few have noticed. It's up to our adventurer's, with a little help from a perceptive councilor, to rid Sharn of the growing infestation.

The adventures in Dalentown continue in The Darkness Beneath Dalentown. Workers in the town’s sewers have stumbled upon the long abandoned halls of the dwarves that once settled beneath this region. What they’ve found is a haunted library. What they’ve woken is something far more sinister! The Darkness Beneath Dalentown features hordes of oozes, undead, and demons festering for years in an ancient dwarven mining stronghold. Now, they are slowly working their way to the surface, and the folk of Dalentown are in dire peril!

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"