Waterdeep Dungeon of the Mad Mage

Waterdeep: Dungeon of the Mad Mage is a sprawling fifth-edition dungeon campaign set beneath the Yawning Portal. Characters of level 5 and higher descend through 23 detailed levels of Halaster Blackcloak's Undermountain, facing monsters, traps, mysteries, and treasures on a path that can carry them to level 20.

The book also details the subterranean refuge of Skullport.

Campaign Length: Character levels 5–20