Essential modules & published campaigns
Great adventures are more than encounters strung together. The modules and campaigns collected here have shaped how we think about game design and storytelling at the table.
From Gary Gygax's notorious deathtrap in Tomb of Horrors to the sprawling conspiracies of The Enemy Within, these adventures have left a mark on the hobby, introducing memorable villains, inventive mechanics, and scenarios that continue to inspire gamemasters decades later.
Whether you're seeking inspiration for your own campaigns, looking to experience gaming history, or curious about the adventures that defined generations of play, these classics offer a window into what makes a tabletop experience hold together.
The adventures published between the 1970s and 1990s established the template for what a tabletop adventure could be — and many remain in print or active play decades later. These modules shaped the vocabulary of dungeon design, encounter structure, and villain craft that still informs the hobby today.
Gary Gygax's notorious deathtrap dungeon, designed to challenge expert players with deadly traps, cunning puzzles, and the demilich Acererak. Known for its extreme difficulty and reputation for TPKs (Total Party Kills). Originally set in Greyhawk.
Inspired by player complaints that dungeons were too easy; widely cited as among the deadliest D&D adventures ever published.
Wikipedia →A massive dungeon crawl beneath the ruined Temple of Elemental Evil, featuring cultists worshiping elemental powers and the demon prince Zuggtmoy. The sprawling megadungeon spans multiple levels with distinct elemental themes. Set in the Greyhawk world.
One of the first true campaign-length adventures for D&D, setting a standard for large-scale dungeon design.
Wikipedia →A series of three connected adventures pitting players against hill giants, frost giants, and fire giants. The adventures reveal a deeper conspiracy involving the drow, leading to the classic Drow series modules. Originally designed for Greyhawk.
Originally tournament modules that later formed the G-series, eventually connecting to the D-series (Descent into the Depths) and Q-series (Queen of the Demonweb Pits).
Wikipedia →The gothic horror adventure that introduced Count Strahd von Zarovich and the haunted land of Barovia. Features the Tarokka deck to randomize key elements, creating a different experience with each playthrough. Spawned the Ravenloft campaign setting.
Spawned an entire campaign setting and has been reimagined multiple times, most recently as 'Curse of Strahd' for 5E.
Wikipedia →A classic starter adventure featuring a frontier outpost and the nearby Caves of Chaos. Contains multiple mini-dungeons housing different monster factions with complex relationships, creating opportunities for strategic play. Well suited to OSR-style gameplay.
Included with many Basic D&D sets and responsible for introducing a generation of players to the game.
Wikipedia →Module S2, a compact dungeon set inside a volcanic mountain where players recover three stolen sentient weapons — Wave, Whelm, and Blackrazor — from the lair of the wizard Keraptis. The dungeon is built around clever mechanical puzzles and trick rooms rather than combat attrition, making it unusually puzzle-forward for the era.
Reportedly written in a single weekend by Lawrence Schick as a job application to TSR — and he was hired on the spot.
Wikipedia →A trilogy of Egyptian-themed adventures (I3: Pharaoh, I4: Oasis of the White Palm, I5: Lost Tomb of Martek) for characters levels 5–9. Players explore a pyramid, investigate a desert oasis, and pursue an ancient wizard's tomb across a vast wasteland. Written primarily by Tracy and Laura Hickman.
Among the first adventures to foreground narrative and atmosphere over pure dungeon-bashing, anticipating the story-focused design Tracy Hickman later brought to Dragonlance.
Wikipedia →A sprawling dungeon complex and lost city inspired by Greek mythology for characters levels 2–6. Multiple competing factions — beastmen, undead, and the minions of the death god Thanatos — occupy the dungeon simultaneously, creating a dynamic environment where faction relationships matter.
Frequently cited as one of the finest Judges Guild publications and a formative influence on later faction-driven megadungeon design.
Wikipedia →Module S3, a genre-bending science fantasy adventure in which characters explore a crashed alien spacecraft. Players collect color-coded access cards to navigate sections filled with functioning robots and exotic alien creatures. Originally run as a tournament adventure at Origins 1976.
One of D&D's most notable science fiction crossovers, featuring the first appearance of the froghemoth and other iconic monsters.
Wikipedia →The 2000s and beyond brought longer, more narratively ambitious campaigns alongside the adventure path format pioneered by Paizo. These adventures reflect shifting design priorities — richer settings, more player agency, and clearer onboarding for new groups.
A reimagining of the classic Ravenloft adventure for 5th Edition D&D. Features the vampire lord Strahd von Zarovich and the mist-shrouded valley of Barovia in an expanded sandbox campaign with numerous locations to explore.
Winner of the 2016 ENnie Award for Best Adventure; frequently recommended as a standout 5E campaign.
Wikipedia →The introductory adventure included with the D&D 5th Edition Starter Set. A sandbox-style module set in the Forgotten Realms around the frontier town of Phandalin, with a goblin ambush, a ruined manor, and a lost dwarven mine to discover.
The entry point for a generation of 5E players. Frequently cited as a strong first adventure for new DMs.
Wikipedia →The first Pathfinder Adventure Path that established the formula for Paizo's campaign style. Players investigate a series of attacks in the town of Sandpoint, uncovering an ancient evil tied to the fallen empire of Thassilon. Set in the world of Golarion.
The inaugural Pathfinder Adventure Path that helped define Paizo's storytelling approach.
Official Resource →An urban campaign set in the city of Korvosa in Golarion, dealing with political intrigue, a cursed monarchy, and ancient evils. Players navigate a complex web of factions while trying to save the city from a mad queen.
Official Resource →A war-focused campaign pitting players against a massive hobgoblin army led by a powerful cleric of Tiamat. Features large-scale battles, strategic choices, and a race against time to prevent the horde from destroying the Vale. Compatible with multiple D&D campaign settings.
A well-regarded standalone D&D adventure that demonstrates how to handle warfare in a fantasy campaign.
Wikipedia →A 5E campaign for levels 1–11 set in the Forgotten Realms, centering on the collapse of giant society after Storm King Hekaton vanishes. All five major giant types simultaneously threaten civilization, and players must uncover the conspiracy at its root.
One of the most open-structured 5E campaigns Wizards has published, giving players significant freedom to address giant threats in any order.
Wikipedia →An urban heist campaign for levels 1–5 set entirely within Waterdeep, where players chase a cache of half a million gold coins across the city. Features four interchangeable villain options tied to different seasons, allowing the DM to dramatically alter the antagonist and tone while using the same core plot.
The seasonal villain structure makes it one of the most replayable 5E campaigns, with wildly different tones depending on which antagonist the DM selects.
Wikipedia →A campaign for levels 1–13 that begins in Baldur's Gate and plunges into Avernus, the first layer of the Nine Hells. Players are drawn into the Blood War between devils and demons, with the second half featuring vehicular combat across hellish wastes in a style the designers described as D&D meets Mad Max.
The infernal war machine system — customizable demonic vehicles roaming the wastelands — is a mechanical experiment unlike anything in other 5E campaigns.
Wikipedia →A three-part megadungeon Adventure Path set beneath a coastal lighthouse called the Gauntlight, near the town of Otari. Players descend through a sprawling dungeon built by the sorcerer Belcorra Haruvex, confronting hideous monsters, deadly traps, and lingering ghosts. Compiled into a hardcover edition after initial serialization.
Widely regarded as Paizo's finest megadungeon and the recommended entry point for Pathfinder 2E play.
Official Resource →The Old School Revival has produced a remarkable body of adventure design — often leaner, more dangerous, and more procedurally inventive than mainstream publications. These adventures assume player skill over character power and reward creative thinking over optimized builds.
A self-published OSR megadungeon covering a vast prison-turned-dungeon in a distinctive one-page-per-section format designed for quick reference during play. The first volume covers Down Night-Haunted Halls; the second, Into the Heart of Hell, followed in 2015. Written for Labyrinth Lord but compatible with most OSR systems.
Its compact one-page dungeon format — presenting each area in a highly scannable layout — became an influential design model for OSR megadungeon publishing.
Community Resource →A megadungeon set beneath a vast barrow field where undead endlessly replenish and rival adventuring parties compete for treasure. Players enter from different barrow mounds on the surface, each leading to sections of the sprawling underground complex. Consolidated as Barrowmaze Complete with new content and cover art by Erol Otus.
The persistent undead repopulation — the dungeon never stays cleared — creates a distinctly different resource-management challenge compared to conventional dungeon crawls.
Community Resource →A timed social investigation by Luka Rejec in which players arrive in a village during a cold October and are expected to identify and burn a witch. The adventure tracks time in day-long watches and monitors NPC attitudes, with players' actions — or inactions — determining who gets accused.
The scenario deliberately makes it impossible to confirm or deny the witch's existence, placing moral weight on every accusation the players make.
Community Resource →A free introductory OSR dungeon presenting a 52-room, three-level tomb designed to teach new players and DMs fundamental dungeoneering skills. Each section demonstrates a core OSR concept — hidden treasure, environmental traps, faction dynamics — so players learn by doing. A deluxe print edition is available separately.
Adopted widely as a recommended first dungeon for players new to OSR play, explicitly designed as a teaching dungeon for new groups.
Community Resource →A 72-page urban adventure supplement by Chris Kutalik set in the bizarre borderlands city of Marlinko — a Slavic acid-fantasy setting with two complete dungeon sites, a web of urban intrigues, a Chaos Index of escalating events, a tiger-wrestling mini-game, and new player classes.
Its Chaos Index — a table of escalating city-wide events that trigger over time — is a frequently cited model for giving urban settings a sense of living momentum.
Community Resource →Horror and investigation adventures demand a different relationship between player and character. These campaigns reward patience, note-taking, and a willingness to let characters be fragile — and include some of the most memorable scenarios across all of tabletop gaming.
A globe-spanning campaign against the cult of Nyarlathotep, taking investigators from New York to Egypt, Kenya, England, Australia, and China. Features deep investigation, memorable NPCs, and multiple paths to victory or defeat. The HPLHS Gamer Prop Set supplies period-accurate handouts and props tailored to each chapter.
Widely regarded as a high-water mark for investigative RPG campaigns, establishing a structure many later adventures followed.
Official Resource →A sprawling mystery aboard the famous Orient Express train, spanning multiple European cities. Investigators race to gather pieces of an ancient artifact while pursued by deadly cultists and cosmic horrors.
Official Resource →The landmark Warhammer Fantasy Roleplay campaign, taking players through the Empire as they uncover a vast conspiracy threatening to destroy it from within. Blends political intrigue, horror, and black humor.
Helped establish the template for narrative-driven campaign design with its mature themes and political complexity.
Wikipedia →A tightly designed scenario set entirely within a single inn over one night. Multiple plot threads unfold simultaneously as various NPCs pursue their own agendas, creating a layered, dynamic environment.
A frequently cited example of how a confined setting can create compelling gameplay.
Official Resource →Written by Sandy Petersen and included in the first edition of Call of Cthulhu, The Haunting sends investigators to probe a Boston boarding house whose tenants have been driven mad. Available as a free download from Chaosium, it has served as the introductory CoC scenario for generations of players.
According to Chaosium, more people have played The Haunting than any other Call of Cthulhu scenario across more than four decades.
Official Resource →The first full campaign ever published for Call of Cthulhu, linking seven sequential adventures into a globe-spanning narrative. Investigators penetrate the Hermetic Order of the Silver Twilight, moving through Boston, New York, Scotland, the American Southwest, Maine, and the South Pacific as they race to prevent the raising of R'lyeh.
As the first purpose-built CoC campaign, it established the globe-trotting multi-chapter format that later classics like Masks of Nyarlathotep would perfect.
Wikipedia →A 400-page globe-trotting campaign by Will Hindmarch and Jeff Tidball in which investigators discover a previous group failed to stop a catastrophic ritual a decade ago — and must now piece together what went wrong. Locations include Savannah, Los Angeles, Bangkok, Malta, Mexico City, the Yucatán, and Ethiopia, which players may visit in any order.
Winner of the 2014 Gold ENnie Award for Best Adventure; widely considered the finest large-scale campaign produced for the GUMSHOE system.
Wikipedia →The greatest adventures feature villains with clear motivations, distinctive personalities, and methods that transcend simple combat encounters. Count Strahd, Acererak, and other iconic foes remain in players' memories long after the campaign ends.
Player agency matters. The adventures that hold up present genuine dilemmas with consequences that matter. When decisions affect the narrative arc and outcome, players become fully invested in the story rather than feeling railroaded.
A well-realized setting acts as another character in the story. Whether it's the mist-shrouded streets of Barovia, the twisted passages of the Tomb of Horrors, or the gritty urban landscape of Korvosa, the environment should enhance the narrative.
Great adventures balance structure with flexibility, providing clear goals while allowing for unexpected approaches. The best scenarios accommodate player creativity rather than forcing a single solution to challenges.
Published adventures provide a foundation for memorable campaigns, but bringing them to life requires more than simply reading the text aloud. Consider these approaches when adapting these classics for your table:
No adventure can anticipate every player action. Prepare to improvise and let the adventure evolve based on your group's approach to its challenges.
These legendary adventures showcase the best of tabletop RPG design across multiple systems and settings. To enhance your understanding and run these adventures effectively, explore these related resources:
Many of these adventures are set in or have spawned iconic campaign settings. Adventures like Ravenloft created entire worlds, while others like Temple of Elemental Evil helped define Greyhawk. Understanding these settings enriches the adventure experience.
Running these adventures requires familiarity with their game systems. Check out our modern RPG systems guide for current editions, or explore OSR systems for running classic adventures in their original style.
Modern digital tools can enhance these classic adventures. Virtual tabletops make it easier to run sprawling campaigns like Masks of Nyarlathotep online, while map-making tools help visualize complex dungeons like the Temple of Elemental Evil.
Many adventures draw from or have inspired fantasy fiction. The gothic horror of Ravenloft echoes classic vampire literature, while Greyhawk adventures often reference pulp sword & sorcery tales. Reading related fiction can help capture the right tone for these adventures.