Neverwinter Nights: Hordes of the Underdark pits players in a battle to save the embattled city of Waterdeep from an ancient evil buried deep within the earth and stone of Undermountain.
- 2 new tilesets and additional content for the Neverwinter Nights Aurora Toolset
- Expansion for Neverwinter Nights
- New 20-hour single-player campaign
- Epic levels allow characters to advance as far as level 40
- New prestige classes, feats, weapons, spells, and voice sets