The successor to AEG's award-winning RPG book "Toolbox" and platinum best seller "Ultimate Toolbox" - the World's Largest take on the Ultimate Toolbox is Over 400 pages of the best charts, tables, and seeds of gaming adventure.

The World's Largest Dungeon is a 1,600+ page, four-book behemoth megadungeon. Experience the Guinness World Record-winning dungeon crawl like never before - fully updated to 5E of the Worlds Most Popular Roleplaying Game!

The forge of fantasy role playing, Gary Gygax's legendary dungeon and its environs. Here begins the journey into depths never before reached.

Our Golden Geek Award-nominated solo/co-op roguelike dungeon crawler is back with the new stand-alone Relics of the Forge expansion. We've also built The Vault: a collector's box set containing all the One Deck Dungeon content ever!