Boss Monster: Vault of Villains features a treasure trove of gameplay variety: • Upgrade your dungeon by hiring one of 15 all-new Minibosses! • Generate Coins to unlock new powers with 35 new Rooms • Expand your 5-6 player games with new Crash Landing cards • New Bosses, Spells, and more! With Vault of Villains, you can combine any of your Boss Monster sets, from the original to Rise of the Minibosses. Keep your game balanced while creating endless gameplay combinations. So step into the Vault of Villains ..and become the ultimate Boss!