Neverwinter Nights: Hordes of the Underdark (Expansion Pack)  - Mac In this single-player adventure, you'll experience epic new levels that allow you to reach up to level 40 Several new Prestige classes have been introduced, like the Weapon Master and the Shifter 16 new creatures to challenge you warrior & mage skills - Mind Flayers, Beholders and Driders lurk below, waiting. but 50 new Feats to help players face the unstoppable denizens of the Underdark Over 40 new spells and a multitude of weapons to choose from, for legendary feats of strength and skill