Neverwinter Nights: Shadows Of Undrentide includes a new 40-hour single player campaign as well as game features new to Neverwinter Nights, such as additional D&D skills, feats, classes, monsters, weapons and spells. In addition, the pack comes with two new tile sets and other assets for use in the Aurora toolset that will enable amateur module designers to create completely different worlds. Neverwinter Nights: Shadows Of Undrentide requires the original Neverwinter Nights game to play.