Atari and Obsidian Entertainment have announced that Mask of the Betrayer, the expansion to Neverwinter Nights 2, has shipped to stores across North America, at a suggested retail price of $29.95. Neverwinter Nights 2: Mask of the Betrayer features a new campaign, epic levels, dozens of new feats and spells, new races, base classes and prestige classes. New companions, weapons, armor and crafting options, as well as hordes of new monsters and enhanced modding tools, are also included in this expansion.