Neverwinter Nights: Shadows of Undrentide is an expansion pack for Neverwinter Nights produced by Floodgate Entertainment and published by Infogrames Entertainment (now Atari). It was released in June 2003. The expansion scenario pack adds a new campaign and new features including five prestige classes: arcane archer, assassin, blackguard, Harper scout, and shadowdancer; new creatures, feats, and spells, and other nuances such as allowing the player to access and modify their henchman's inventory. The Windows version also included scripting options for the Aurora toolset.