Lair of the Unknown (2013)

From the back of the book:

All the dungeons have been looted, all the monsters have been slain, and this land is free from the oppression of mad sorcerers and marauding armies. There is no longer any need for adventurers like you, and not a single opportunity for you to get rich left in these parts… or is there? Deep in the Haunted Forest you stand, directly in front of the lost stronghold of Fearsome Forbus and the Unknown Wizard—two of the greatest dungeon raiders that ever lived. Will you leave laden down with all their precious loot? Or will you uncover horrors this land thought dead and buried, never to return?

Lair of the Unknown is an adventure module for Dungeon World that riffs on the Basic Dungeons & Dragons classic In Search of the Unknown. Like In Search of the Unknown, Lair of the Unknown is a dungeon crawl through the lair of two (in)famous adventurers, and is presented in such a way that it serves well as an introductory adventure for both GMs and players.

Also included with the module is a new base character class, The Dungeoneer, and three compendium classes: Caver, Engineer, and Tomb Robber.