Of course, if you buy a Neverwinter Nights expansion pack, do you buy it for the official campaign or for all of the fan-created campaigns that will eventually come out? If it’s the latter, or if you’re one of those people who likes making campaigns yourself, then Shadows of Undrentide has a lot to offer: over a dozen new creatures (including basilisks and pit fiends), three new tilesets, three new skills, 31 new feats, 66 new spells, and five new “prestige classes” that have high enough requirements that you can only select them after gaining a few levels in regular classes. Really, if you enjoy playing campaigns on the Neverwinter Nights engine, then the Shadows of Undrentide expansion pack is worthwhile just for all the new options it gives you for creating and playing characters.