World’s Largest Dungeon, Book 2: Regions E-H

Dungeons & Dragons 5th Edition Campaign by World’s Largest RPGs

Experience the Guinness World Record-winning dungeon crawl like never before! Fully updated to 5E of the World’s Most Popular Roleplaying Game! The World’s Largest Dungeon is a 1,600+ page, four-book behemoth megadungeon featuring every single monster in the SRD, taking adventurers from level 1-20. The Platinum edition brings this award-winning dungeon back and makes it better than ever with refined and rebuilt content, a completely new first region, and a treasure trove of collectible accessories.

The World’s Largest Dungeon Is Calling…Will You Answer?

Buried beneath a shattered world lies a vast, interplanar prison: an ancient construct built to contain the most dangerous monsters in existence. But the seals are failing. Whispers of lost power and forgotten relics draw the desperate and the daring into its depths. For gold, glory, redemption – or revenge – the adventurers descend. But the dungeon is alive, watching, and it does not forgive trespass!

A Legend Reborn

Originally released in 2004 by AEG (Alderac Entertainment Group), the World’s Largest Dungeon earned its name, and a Guinness World Record, with its staggering size and ambition. Designed by a dream team of writers including jim pinto, Robert J. Schwalb, Richard Farrese, Dana DeVries, Jeff Ibach, Patrick Kapera, and more, it became a cult classic for groups who craved a brutal, sprawling challenge. Now, 20 years later, the Platinum Edition brings it roaring back to the table, fully modernized for 5E and built to honor its infamous legacy.

Rebuilt. Refined. Ready to challenge heroes. 

This isn’t just a reprint, it’s a total overhaul of the legendary record-breaking megadungeon, fully modernized for 5E and today’s gamers. Every corner of the dungeon has been reexamined for a new generation. Encounter pacing, experience progression, and the structure of each region have been rebalanced to ensure that every room matters. Whether you’re navigating cursed hallways or taking down one of the 18 epic bosses, you’ll feel the tension at every turn.

World’s Largest Dungeon, Book 2: Regions E-H is available through DriveThruRPG in PDF.

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