Sunless Citadel PDF: A Comprehensive Guide (Updated 02/03/2026)
Today’s date is 02/03/2026. This guide focuses on accessing the Sunless Citadel adventure, initially a 3rd edition module, now available as a 5th edition PDF.
What is the Sunless Citadel?
The Sunless Citadel is a classic Dungeons & Dragons adventure, originally designed for the 3rd edition of the game in 2000. It gained renewed popularity with its inclusion in Tales from the Yawning Portal, a 5th edition compilation. This introductory-level adventure is specifically crafted for player characters (PCs) ranging from levels 1 to 3, offering a perfect starting point for new players and Dungeon Masters.
At its core, the Sunless Citadel is a subterranean dungeon – a fortress that mysteriously fell beneath the earth long ago. The adventure centers around investigating the disappearance of several villagers and uncovering the secrets hidden within this ancient structure. Players will navigate a two-level dungeon, encountering a dynamic conflict between two rival factions: goblins and kobolds. The adventure is known for its blend of exploration, combat, and problem-solving, providing a well-rounded D&D experience. It’s a self-contained story, ideal for a short campaign or a one-shot adventure.
History and Editions of the Adventure
The Sunless Citadel first emerged in 2000 as a module for Dungeons & Dragons 3rd edition, penned by Bruce R. Cordell. It quickly became a favorite among DMs for its accessible design and engaging storyline, ideal for introducing new players to the game. Its initial release was a standalone adventure, readily available for purchase.
Years later, the adventure experienced a resurgence in popularity with its inclusion in Tales from the Yawning Portal (2017), a compilation of classic D&D adventures updated for the 5th edition ruleset. This edition brought the Sunless Citadel to a new generation of players, revitalizing its appeal. The 5th edition version maintains the core narrative but benefits from streamlined mechanics and updated monster statistics. Consequently, the adventure is now widely available as a PDF, often bundled with other content or sold separately through various online platforms;
Where to Download the Sunless Citadel PDF
Finding a Sunless Citadel PDF is relatively straightforward, though legality is a key consideration (discussed later). Several online retailers, such as the official Dungeons & Dragons website through Wizards of the Coast, offer the adventure as a digital purchase. Tales from the Yawning Portal, containing the Sunless Citadel, is frequently available on platforms like D&D Beyond, Roll20, and DriveThruRPG.
These platforms typically offer the PDF in various formats compatible with different devices and reading preferences. Additionally, some websites aggregate links to various D&D resources, potentially including the Sunless Citadel PDF. However, caution is advised when using such sites, as they may host unauthorized copies. Always prioritize legitimate sources to support the creators and ensure a safe download experience. Remember to check for updated versions, as of 02/03/2026.
Legality of PDF Downloads
Downloading the Sunless Citadel PDF from unofficial sources carries significant legal risks. Wizards of the Coast retains copyright over the adventure, and distributing or obtaining it through unauthorized channels constitutes copyright infringement. This can lead to legal repercussions for both the uploader and downloader, though enforcement varies.
Purchasing the PDF through official platforms like D&D Beyond, DriveThruRPG, or the Wizards of the Coast website ensures a legal and ethical acquisition. Supporting these platforms directly funds the creation of future Dungeons & Dragons content; While free PDFs may seem tempting, they often lack quality control and may contain malware. As of 02/03/2026, prioritizing legal downloads protects both yourself and the intellectual property rights of the creators.
Overview of the Adventure for Levels 1-3
The Sunless Citadel is designed as an introductory adventure for player characters between levels 1 and 3. It centers around a missing person investigation, leading the party to a subterranean fortress that has fallen into the earth. The dungeon itself features two distinct levels, each controlled by a rival faction: goblins and kobolds.
Players will navigate a dynamic environment where these two groups are constantly vying for control, creating opportunities for alliances, betrayals, and tactical encounters. Expect challenges involving monstrous threats, ancient traps, and puzzles. The adventure emphasizes exploration and problem-solving, offering a classic dungeon crawl experience. It’s a great starting point for new Dungeon Masters and players alike, providing a manageable scope and engaging storyline.

The Yawning Portal Connection
The Sunless Citadel gained renewed prominence with its inclusion in Tales from the Yawning Portal, a 5th edition compilation of classic Dungeons & Dragons adventures. The Yawning Portal, a famous tavern in Waterdeep, serves as a hub for adventurers seeking quests and rumors.

Within the context of the Yawning Portal collection, the Sunless Citadel is presented as one of the many adventures available to characters looking for their first foray into dungeon delving. This anthology format allows players to easily access and experience a variety of classic adventures, all within a unified 5th edition framework. The adventure’s inclusion highlights its enduring appeal and suitability as an introductory experience for new players, solidifying its place in D&D history.
Key NPCs in the Sunless Citadel
The Sunless Citadel features several Non-Player Characters (NPCs) crucial to the adventure’s unfolding narrative. These individuals drive the plot, offer quests, and present challenges to the player characters. Understanding their motivations and roles is key to a successful campaign.
Two prominent figures are Meepo, a timid and resourceful goblin who can provide valuable information (potentially for a price), and Klarg, the brutal and ambitious bugbear leader. Klarg commands the goblinoids and represents a significant threat within the citadel. Interactions with these NPCs, and others encountered during the exploration, shape the players’ experience and influence the outcome of the adventure. Their personalities and agendas add depth to the dungeon’s environment, making it more than just a series of monsters and traps.

Meepo
Meepo is a notably timid goblin within the Sunless Citadel, differing significantly from the more aggressive goblinoids under Klarg’s command. He’s a key NPC, offering a potential avenue for information and even assistance to the player characters – though always with a degree of self-preservation in mind. He’s described as resourceful, suggesting a cunning beyond his fearful demeanor.

Players might encounter Meepo attempting to avoid conflict, perhaps scavenging or hiding from Klarg’s patrols. He’s likely to be receptive to bribes or promises of protection, willing to share details about the citadel’s layout, the kobold presence, and Klarg’s plans. However, his information should be treated with caution, as his primary concern is his own safety. Successfully gaining Meepo’s trust can provide a significant advantage to the party.

Klarg
Klarg serves as the primary antagonist among the goblin faction within the Sunless Citadel. He’s a bugbear, significantly larger and more imposing than the common goblins he leads, and possesses a ruthless, dominating personality. Klarg’s ambition extends beyond simple raiding; he aims to establish the goblins as the dominant force in the citadel, driving out the kobolds entirely.
Players will likely encounter Klarg as a challenging combat encounter, potentially alongside his goblin minions. He’s depicted as a brutal fighter, relying on his size and strength to overwhelm opponents. Information gleaned from sources like Meepo suggests Klarg is arrogant and underestimates the capabilities of adventurers. Defeating Klarg disrupts the goblin’s power structure and opens opportunities for further exploration and interaction with the remaining inhabitants of the citadel.
The Two Rival Factions: Goblins vs. Kobolds
The Sunless Citadel’s core conflict revolves around the longstanding animosity between the goblin and kobold tribes inhabiting its depths. These aren’t unified villains, but two distinct groups vying for control of the dungeon and its limited resources. The goblins, led by Klarg, are more aggressive and focused on direct confrontation, attempting to seize territory through force.

Conversely, the kobolds are cunning and rely on traps, ambushes, and their knowledge of the citadel’s layout to defend their holdings. This dynamic creates a fascinating environment for player interaction; adventurers can exploit the rivalry, potentially forming alliances with one side against the other. Understanding the motivations and weaknesses of each faction is crucial for navigating the dungeon and achieving a successful outcome. The PDF details the specific territories and leadership of each group.
Detailed Dungeon Level Breakdown ‒ Level 1
Level 1 of the Sunless Citadel, as detailed in the PDF, primarily showcases the goblin presence and their crude attempts at fortifying the area. This level features a network of natural caverns and hastily constructed barricades. Key locations include the goblin barracks, a mess hall, and several guard posts. Players will encounter numerous goblins, along with their wolf companions, throughout this section.
The PDF maps reveal a series of interconnected chambers, including a collapsed section requiring careful navigation. Several traps, though rudimentary, are scattered throughout, reflecting the goblins’ opportunistic nature. The level culminates in Klarg’s lair, a more heavily defended area. Careful exploration reveals clues about the kobold presence deeper within the citadel, hinting at the larger conflict. The PDF provides detailed descriptions of each room and potential encounters.
Detailed Dungeon Level Breakdown ― Level 2
Level 2 of the Sunless Citadel, as outlined in the PDF, is dominated by the kobold warren, a stark contrast to the goblins’ crude fortifications above. This level features a more intricate network of tunnels and chambers, showcasing the kobolds’ natural talent for tunneling and trap-making. Key areas include the kobold shrine dedicated to Kurtulmak, a series of workshops, and the lair of Meepo, a cunning kobold sorcerer.
The PDF’s maps reveal a labyrinthine layout, filled with cleverly concealed traps and defensive measures. Players will face a greater variety of kobold types, including skirmishers, slingers, and guards. This level also introduces more challenging encounters, including a guardian statue and potentially a larger, more powerful kobold leader. The PDF emphasizes the kobolds’ religious fervor and their devotion to Kurtulmak, influencing their behavior and tactics.
Notable Monsters and Encounters
The Sunless Citadel PDF details a variety of creatures inhabiting the dungeon. Goblins and kobolds form the bulk of the opposition, ranging from common grunts to more specialized warriors and skirmishers. Encounters aren’t simply combat-focused; the PDF highlights opportunities for roleplaying and negotiation, particularly with the more intelligent goblins.

Beyond the humanoid threats, the dungeon harbors monstrous spiders, oozes, and potentially a more significant creature lurking in the depths. The PDF emphasizes the importance of environmental hazards, like pit traps and collapsing tunnels, adding another layer of challenge. Notable encounters include a skirmish with a goblin raiding party, a tense negotiation with Meepo, and a confrontation with Klarg, the bugbear leader. The PDF provides stat blocks and tactical advice for each creature, aiding Dungeon Masters in running engaging encounters.
Traps and Puzzles within the Citadel
The Sunless Citadel PDF meticulously details a range of traps and puzzles designed to challenge adventurers. These aren’t merely damage-dealing obstacles; many require clever thinking and problem-solving skills to overcome. The PDF provides clear descriptions of each trap’s mechanics, including trigger conditions, effects, and methods for detection and disarming.
Puzzles within the citadel often involve manipulating the environment or deciphering clues left by previous inhabitants. The PDF emphasizes the importance of rewarding players for creative solutions, even if they deviate from the intended method. Examples include hidden doors triggered by specific sequences, pressure plates activating dart traps, and riddles guarding valuable treasure. Dungeon Masters will find detailed notes on how to run these challenges effectively, ensuring a fair and engaging experience for players. The PDF aims to enhance the dungeon’s atmosphere of mystery and danger.
Rewards and Treasure Available
The Sunless Citadel PDF comprehensively lists the rewards and treasure scattered throughout the dungeon, appropriate for characters levels 1-3. Beyond simple gold pieces, adventurers can discover potions, scrolls, and minor magic items that aid their progression. The PDF details the specific location of each treasure, along with descriptions of its appearance and value.
More significant rewards are tied to overcoming key challenges and defeating powerful enemies. These include enchanted weapons, armor, and unique artifacts with special properties. The PDF provides guidance for DMs on how to distribute these rewards fairly, considering player roles and contributions. It also suggests opportunities for roleplaying encounters related to the treasure, such as negotiating with merchants or uncovering the history of a magical item. The treasure is designed to be enticing, but not game-breaking, fostering a sense of accomplishment and encouraging further exploration.
Running the Adventure as a Dungeon Master
The Sunless Citadel PDF is an excellent resource for both novice and experienced Dungeon Masters. It provides detailed maps, monster statistics, and encounter descriptions, streamlining preparation. The PDF emphasizes the dynamic between the goblin and kobold factions, encouraging DMs to portray their rivalry convincingly and allow player choices to influence their interactions.

Successful execution relies on vividly describing the dungeon’s atmosphere – a damp, claustrophobic environment teeming with danger. The PDF suggests incorporating sound effects and lighting to enhance immersion. DMs should be prepared to improvise, as players may deviate from the expected path. The adventure’s relatively simple structure makes it ideal for learning DM fundamentals, such as pacing, encounter balancing, and roleplaying NPCs; Remember to tailor the experience to your players’ preferences, adjusting difficulty and emphasizing elements they enjoy.
Adapting the Sunless Citadel for Different Systems
While originally designed for Dungeons & Dragons, the Sunless Citadel’s core concepts readily translate to other tabletop role-playing systems. The adventure’s strength lies in its classic dungeon crawl structure – exploration, combat, and puzzle-solving – elements universal across many games. The PDF’s detailed maps can be easily redrawn for systems with different grid sizes or spatial rules.
Adapting monster statistics requires referencing equivalent creatures in your chosen system. Focus on maintaining the challenge level appropriate for low-level characters. The goblin and kobold factions provide compelling narrative hooks adaptable to various campaign settings. Consider how each system handles skills and abilities when designing traps and puzzles. The Sunless Citadel PDF serves as a fantastic foundation, but successful adaptation demands understanding your target system’s mechanics and tailoring the experience accordingly.
Resources and Supplemental Materials
Beyond the core Sunless Citadel PDF, numerous online resources enhance the Dungeon Master’s preparation and player experience. Websites dedicated to Dungeons & Dragons offer player aids, pre-generated character sheets suitable for levels 1-3, and expanded monster lore. Several fan-created maps, often with enhanced detail, are available for download, providing visual alternatives to those within the PDF.
Communities like Reddit and dedicated forums host discussions about running the adventure, sharing house rules, and offering advice on challenging encounters. Supplemental materials, such as “Book of Challenges” providing dungeon rooms and puzzles, can be integrated to expand the Citadel’s complexity. Remember to verify the legality of any downloaded content. Utilizing these resources alongside the PDF ensures a richer, more engaging campaign for all involved.

