Initially published in 2004 by Alderac Entertainment Group (AEG), The Worldâs Largest Dungeon is a groundbreaking RPG adventure that set a Guinness World Record for its unprecedented size and scope. Featuring every monster from the System Reference Document (SRD), this mega-dungeon campaign takes players from level 1 to 20 in a massive, interconnected underground world. Designed to be an all-in-one, inescapable dungeon experience, it quickly became a legendary challenge among tabletop RPG enthusiasts.
âď¸ Worldâs Largest RPGs
Now, 20 years later, the Platinum Edition brings this iconic dungeon back to life, fully updated for 5E, with new content, exclusive miniatures, stunning maps, and expanded adventures for a new generation of adventurers.
The Platinum Edition of the Worldâs Largest Dungeon will launch its crowdfunding campaign on BackerKit on May 13th, 2025. This updated edition will incorporate the latest rules, enhanced editing, and stunning new artwork and maps, all meticulously overseen by our publishing partner, Strange Owl Games.
đ° The 20th Anniversary Platinum Edition
This edition boasts incredible new features, including:
16 NEW boss miniatures
Curated Miniature Sets from Reaper Miniatures
16 poster-sized maps + NEW detail maps
Over 1,600 original encounters fine-tuned for modern gameplay
Exclusive Fanroll diceAudiobook by AudioRPG
NEW stretch goal content
Secret Door Encounters featuring guest designers from iconic worlds like Dragon Kings, Fading Suns, Torg Eternity, Thieves' World, and more.The Platinum Edition is a unique opportunity to relive seminal design work from industry legends who have gone on to shape the Fantasy genre landscape such as Robert J. Schwalb (Shadow of the Demon Lord, Warhammer Fantasy) and Richard Farrese (Assassinâs Creed, World of Warcraft). Original lead designer jim pinto returns to the project, entirely redesigning the infamous first level and providing an all new adventure to bring players into the Worldâs Largest Dungeon.
đ The Books
The Worldâs Largest Dungeon is returning in a four-book set, updated for modern play while keeping the original dungeonâs depth and challenge intact: it is easier than ever to navigate the dungeonâs encounters, factions, and secrets. | | |
đ The Minis
Alongside the books, weâre producing 16 boss miniatures to bring some of the dungeonâs most dangerous enemies to life. Here are three from the lineup:
đ Secret Door Adventures
A Secret Door Adventure is a self-contained dungeon expansion crafted by a variety of talented RPG authors to add new encounters, lore, and unique challenges to the Worldâs Largest Dungeon. These adventures introduce unexpected twists, hidden threats, and entirely new ways to experience the dungeon. Industry greats like Timothy Brown (Dragon Kings, Dark Sun), Robert J. Schwalb (Shadow of the Demon Lord, Warhammer Fantasy), and Leamon Crafton (Torg Eternity) are already providing Secret Door Adventures for the campaign.
đ An Epic Contest for Aspiring Designers
The campaign introduces a groundbreaking Secret Door Adventures Contest in partnership with Portals to Adventure. Aspiring RPG designers can submit their own dungeon encounters, with fan-voted winners included in the Secret Doors book joining the new contributions from a host of elite creators.
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