In the aftermath of AD&D Second Edition's "Return to the Tomb of Horrors," the demilich Acererak was thought destroyed. In truth, his spirit lingered and now after eons he schemes once more to achieve divinity. The characters must travel to three extraplanar dungeons, in addition to the remains of the original Tomb, in order to stop this from coming to pass.

THE NEXT MARCH WASN'T DUE FOR ANOTHER 189 YEARS. TRY TELLING THAT TO THE MODRONS! On a regular schedule, the Great Modron March spills out of Mechanus, and the lawful automatons files their way around the Great Ring. No one knows why they do it, but everyone stays out of their way - because when the modrons march, they'll walk right over a berk who doesn't know enough to move aside. But this March has started decades before it was supposed to begin, and that's even more of a mystery. Caught unprepared, the planes shudder under the modrons' collective footsteps - and even the modrons themselves seem a little out of sorts. The Great Modron March anthology features 11 adventures for characters ranging from 1st to 10th level, as well as new information about the modrons of Mechanus. Each adventure can be played separely or linked together to form an extended campaign. The modron procession touches every Outer Plane in turn - and it isn't always welcome. On their unswerving path, the clockwork creatures will destroy celestial towns, be attacked by evil knights intent on using modron parts in foul experiments, and lead characters onto the deadly plains of the Abyss and into the famous prime-material labyrinth of Undermountain. Without help, they'll be lost in the swirling chaos of Limbo or even fail to complete the March entirely. And along their route, every blood on the planes seeks the answer to the most important question: Why have the Modrons abandoned their normal, lawful schedule to march years before they're due? TSR 2628

Four doors of mystery appear in the Cage. They lead to four adventures, if a basher has the dark of them. "These aren't doors in the traditional sense, cutter, but they're portals just the same. They appear for a short time every 500 years, popping up in different parts of Sigil. Each hides a mystery that's waiting to be solved, and together they just might hold the key to a secret of the multiverse. All a body's got to do is tumble to the right keys, open the doors, and face down the Unknown." - Estavan, merchant lord Doors to the Unknown is a collection of four Planescape adventures that can be played separately or as a mini-campaign. When four doors appear in the Cage, the barmies crawl out of the shadows, and the heroes get drawn into events that could have consequences for the entire multiverse. Each door leads to a different plane and a different deadly challenge for the player characters. Together they offer a way to stop an ancient menace before it strikes again.

You are hired by a mine operator to retrieve the mine's gnomish engineer who has barricaded himself in the mine's lower reaches. But there's more going on than just a crazy gnome and his robots sabotaging the mine. You'll need to explore the forest, build alliances, and brave a rollercoaster ride on a mine cart to get to the bottom of this adventure (pun intended). This is a gamebook-style solo adventure that you can play in your browser. You make a 2nd level character sheet, roll your own dice, keep up with your inventory, spells, and HP, and are on your honor to be honest. It's all text-based with some public domain illustrations, and you click on options as you make decisions and roll the dice.

The End of the World Is at Hand! A hideous death cult has seized control of an ancient artifact-monument known as Tovag Baragu. The power behind the cult is the Old One himself, Iuz the Evil, demonic master of an empire. He's on an all-or-nothing quest for supremacy over the world—and the heavens beyond. To stop him, heroes must face horrors never dreamed of, journeying to a shadowed city where Death rules and the living cower. Here, Iuz will achieve his mad dream by destroying the imprisoned master of that alien citadel: Vecna, the mightiest lich, an immortal demigod. Two items exist with the power to stop Iuz—the Eye and the Hand of Vecna—but using them carries fantastic risks. Not even the gods know what will be unleashed when these items are fully activated. Die Vecna Die! takes the heroes from the Greyhawk campaign to the demiplane of Ravenloft and then to the Planescape city of Sigil. However, none of the material from those settings is required for play. TSR 11662

Punjar: wide-eyed madmen stalk the streets pronouncing the end of days, mail-clad priests crush the skulls of heathens underfoot, and timorous virgins are offered up in sacrifice within sooty temples. But even the greatest of shining temples and the strangest of mystery cults don’t dare to challenge the terrifying finality of Death. Until now. In Blades Against Death, the adventurers cross between the realms of the living and the dead, and wager their souls in a desperate bid to steal a soul from Death’s hoary grasp. To win over the God of Dooms, you must be the most daring, stalwart and cunning and – when all else fails – willing to test your blades against Death! A mid-level adventure for the Dungeon Crawl Classics Role Playing Game, Blades against Death offers characters a once in a lifetime escapade. Those that return from the Realms of the Dead will have earned the true title of adventurer, while those that fail will spend eternity in Death’s service.

A mysterious ship emerges from the dark ocean mist, its lantern-lit deck silent and empty. When invisible hands cast lines and ropes over to the characters, will they accept the invitation to board and enter the secret afterlife of departed sailors? Ghostlight is a nautical sword-and-sorcery adventure and includes: -A haunting foray into the afterlife for good and evil sailors -A mad witch, a dashing rat pirate, and a tavern full of departed souls -Combat cards for each monster, PC, and special treasure -High-quality digital maps for use with virtual table tops

This adventure includes large-scale battles, war-planning and the potential challenge of PCs claiming and holding dominion over territory. A King's Commission leads to danger! All communication with the barony of Twolakes Vale has ceased. King Ericall, worried about the security of his border and angered at the loss of tax revenues, has commissioned you, a delegation of powerful adventurers, to investigate. This is not a petty problem to by solved by the armies of local nobility. Indeed, the king's forces are desperately needed elsewhere. Twolakes Vale is, after all, only a small barony on the far frontier of Ericall's domain. And yet? The cloud is there, its nature and cause unknown. None have returned for the barony for weeks. Furthermore, the cloud is spreading, and vague reports of unrest and mysterious disappearances are starting to trickle in from nearby baronies. Can you discover the secret of Two Lakes Vale? TSR 9118

Isle of the Ape is an adventure module for the Dungeons & Dragons role-playing game World of Greyhawk campaign setting, in which the events occur in a magical demiplane of the same name created by the mad archmage Zagyg Yragerne TSR 9153

It's like a 'Legend of Zelda' puzzle dungeon, but instead of Link, you play as a group of grubby grave robbers. Also, there's way more eyeball stuff. Puzzle Dungeon: The Seers Sanctum is a system neutral adventure for characters of level 1 to 4. It will work with any old school games like Old School Essentials or B/X or the most recent version of the world's most popular roleplaying game. What's in it: * 10 room dungeon crawl where each location has its own mysteries to poke and experiment with * Cohesive puzzles that build on each other * Lets players to discover their own solutions in true OSR fashion * Magic items and equipment that change how the players interact with their environment and previously explored areas * Use as a 4-6 hour one-shot or the start to a planar hopping campaign for wherever you'd like to go

The heroes’ journey is finally at its climax. The evil god Tunkorl has just been freed from his prison and only the strongest and bravest mortals of the realm can defeat him before he regains full strength and throws the world in another dark age. However, the ultimate final fight will not be as straightforward as it seems when the party becomes trapped in a time dilated cross section of Carceri, struggling to get back to the real world and finish the job. Escape the Labyrinth is D&D 5e mini adventure for 3-7 characters of 20th level. This adventure is designed for a single 3-hour session which can be part of a special event, the end, or beginning of a campaign. The heroes go between fighting the big bad evil god (round by round) and trying to escape the mutliple layers of the Labyrinth of Futility a space-time dilated cross section of Carceri.

Azaketh, a sly and industrious devil, prepares his revenge against his bitter enemy Zirkex. Naturally, the mortals affected by his schemes are mere pawns to further his goals. It is up to the heroes to stop Azaketh in his tracks before he takes control of a powerful weapon – Logrimm’s Tower Golem. The Tower Golem is an adventure designed for 3-7 2nd to 4th level characters and is optimized for five characters with an average party level (APL) of 3. It's the second and final chapter of the saga about Logrimm’s Tower Golem. The first chapter The Soulmonger isn't necessary to play The Tower Golem but it sets up the villian Azaketh and introduces NPCs that can help the characters conquer the Tower. The focus of The Tower Golem is set on roleplaying and interesting fights. In theory, the Tower is an infinite web of rooms and portals that the characters may never escape. However, eventually, the characters reach the end for one final encounter. You can change, interweave, or exchange the different parts as you see fit. There are several proposals and fully fleshed out levels in this document, but you may add your own adventures to the list!

Eternally does the Lord of Nessus scheme, and his designs are for all eternity; In the pit of Hell do the devils teem round his throne, and his reign is unchallenged; By the eight Dark Ones is he held supreme, and his name (speak it not!) is Asmodeus. - From "The Canticle of Thumis," 142:15 To some, justice is more important than glory, duty is more important than desire, and goodness is more important than life. The great paladin Klysandral was such a man. But even the sleep of death, at the end of a long lifetime spent battling evil, did not bring peace to Klysandral. During his funeral, the entire Temple of Neheod was dragged by terrible magic into the Nine Hells, along with the soul of Klysandral and scores of living mourners! What unearthly motive could be behind this tragedy? Only the bravest, strongest, and most resolute heroes will have the mettle to find the answer. Along the way, they will meet the enigmatic wizard Emirikil the Chaotic, sail aboard the fiendish ship Demonwing, and finally face the horrific minions and overwhelming terrors of Hell itself. Only the path of light can lead the bravest of the brave into perdition and safely out again. Step wisely, and walk in justice.

A magic shop, The Travelling Salesman, has appeared in town just in time for the party's arrival. This shop specialises in being in the right place, at the right time, with the right equipment, for the right adventurers. Its wisteria-covered frontage adorns any old blank wall space, and immediately looks like it's been there for decades. Large paned windows are smeared with age-old dirt and hint at the vast array of interesting objects inside. The shop belongs to Yannik Willowbough, an exhausted-but-jovial halfling with a passion for helping others. At least, it belongs to Yannik now. It was once home to a lich, Verdenia Siskin, who has recently concocted the perfect way to exact her revenge. She just needs a party of adventurer's to turn to her point of view. This adventure contains: - A (hungry) planes-travelling magic shop and former home of a powerful lich. - A lich who takes particular delight in winding adventurers around her little finger to do her bidding. - A planar tear that threatens to pull the whole town (or more!) into the Shadowfell. - A spooky house of delights. - NPCs whose motives will be thoroughly questioned by the party. - A 3—10 hour adventure for a party of any level and composition - Depending on the outcome the party may also benefit from: - A planes-travelling base of operations - A recurrent NPC quest-giver and/or helper - A devious, and eternally patient, antagonist. - Four original hand-drawn maps to support combat and exploration, with seperate versions suitable for VTTs. - Advice for new DMs to run this adventure smoothly. - A separate accessible adventure pdf. This adventure was written as part of the Storytelling Collective's Write Your First Adventure workshop. Content warnings: Horror, gore

Horrors in the Dark The origin of the ShadowGate is lost in antiquity. Some claim it as the work of devils, others cannibal cultists or even demon lords. Not long after its discovery it was boarded up by the priests of the local church, and then fortified by paladins. Of late something has emerged from the portal. It remains trapped within the divine defences, but for how long?

“Traversing the planes of existence is no easy task. Only extremely talented and knowledgeable people could manage it.” A mysterious thief stole a dangerous artifact, called the Tome of The Stilled Tongue from the tower of Lady Blackstaff of Waterdeep, Vajra Safahr herself, leaving the tower by opening a portal to the Elemental Plane of Fire. The archmage immediately calls the band of adventurers who are staying in town to chase down the thief and return the dangerous book to its place. This adventure can be used to kick-off a planar campaign or as a standalone one-shot. A Chase Through The Planes features: - An exciting journey across the multiple planes of existence: Elemental Plane of Fire, Shadowfell, Feywild, and Ysgard - Exploration of morkoth island and lair in the Astral Sea full of weird creatures, strange phenomenons, and dangerous encounters - Heavy use of Supernatural Regions from Tasha’s Cauldron of Everything - High-quality battle maps, available in printer-friendlier and universal vtt format

Beneath the blood moon, a dark monastery appears for one night atop a high plateau. Inside its walls, the mighty black lotus flower reaches its full bloom. Can the characters steal inside the monastery, defeat its sorcerous guardians, and claim the blossom before the sun rises? Monastery of the Shadow Sorcerers is a fiendish sword-and-sorcery adventure and includes: -An extra-planar monastery brooding beneath the blood moon -Sorcerer-monks who move like smoke and strike with fire and blade -Combat cards for each monster, PC, and special treasure -High-quality digital maps for use with virtual table tops

An expansion on the original Tomb of Horrors with plot and explanation. Contains a facsimile of the original adventure. The Dark Intrusion is causing the dead to rise from their graves. This is linked to a being known as the Devourer. Following the trail of Desatysso, a wizard who followed a similar quest, the players must enter the Tomb, and beyond that, the cursed City that Waits and the Fortress of Conclusion.

In the dark days of the Chaos War, a band of heroes sets forth to recover the famed Chaos Reaver - a sword said to possess the power to banish creatures of Chaos from the land. Converted to 3.5e from the original SAGA version published in Polyhedron UK #7 (1999).

Iggwilv. Orcus. Maleanthet. Obox-Ob. Charon. These names are among the most notorious in the multiverse, appellations belonging to some of the most dangerous and powerful creatures on the lower planes. Heroes from countless worlds have raised their arms against these immortal foes and, in most cases, these heroes have perished to their soul-blasting, life-ending might. Their lairs are notorious as they are: the River Styx, beautiful but deadly Shendilavri, the Gray Wastes of Hades, frozen Thanatos, and mind-numbing Zionyn. Simply entering one of these scions of evil is akin to suicide. Yet now, as the Prince of Demons begins the final rituals to bring the savage tide to the Material Plane, heroes must approach these immortal villains not as enemies, but as allies. "Enemies of My Enemy" is the eleventh chapter in the Savage Tide Adventure Path, a complete campaign consisting of 12 adventures appearing in Dungeon magazine. For additional aid in running this campaign, check out Dragon magazine's monthly "Savage Tidings" articles, a series that helps players and DMs prepare for and expand on the campaign. Issue #358 of Dragon magazine features a map of the River Styx and advice for those who would use this notorious river as a route in exploring the lower planes. The time draws near for the final assault on Gaping Maw, but first the PCs must recruit allies from the depths of the Abyss to the eladrin Court of Stars. yet will this unlikely alliance of demons and eladrins be enough to stop the Prince of Demons? Pgs. 40-85