Neverwinter Nights: Shadows of Undrentide adds a little of everything. There is the addition of Prestige Classes that allow your character to specialize in more unique areas. Again, there are new feats that allow a character to more in a very specific or very general direction. Additionally, new skills and spells were added as well (although the skills were focuses primarily on rogues and many will argue that mage classes are still "inferior" to other classes).
Shadows of Undrentide also adds a new set of official modules with the expansion. The plotline is interesting and the game makes use of new tile sets, but ultimately it is quite short and not as challenging as would be expected… Read more