Continuing in the vein of grand adventures such as Castle Ravenloft, The Legend of Drizzt, Wrath of Ashardalon, and Temple of Elemental Evil, the brand new Waterdeep: Dungeon of the Mad Mage Adventure System Board Game features multiple scenarios, challenging quests, and game play designed for a single player or a cooperative group of 2?5 players. The Waterdeep: Dungeon of the Mad Mage Adventure System Board Game also features new Environment and Bane/Boon cards, as well as the Trap and Spell decks that premiered in Tomb of Annihilation, for even more exciting game-play content! And, beginning with this release, players can now get to level 4 with their characters and gain even more powers!

In the city of Waterdeep rests a tavern called the Yawning Portal, named after the gaping pit in its common room. At the bottom of this crumbling shaft is a labyrinthine dungeon known as Undermountain, domain of the mad wizard Halaster Blackcloak, who has seeded his lair with monsters, traps, and mysteries.