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!

Whether you’re a group of local heroes sent to investigate mysterious goings-on in the nearby haunted wood, or famous mercenaries plotting and scheming in the big city, the MCDM RPG makes building adventures and fighting monsters fun.

We invite you to join the celebration and check out the latest in the city of Gloomhaven. From Gloomhaven: Buttons & Bugs, Gloomhaven: The Role Playing Game, Miniatures of Gloomhaven, Gloomhaven: Second Edition and more, there is something for everyone.