Most helpful critical review
Neverwinter Nights: Hordes of the Underdark
on March 29, 2004
Neverwinter Nights: Hordes of the Underdark adds more of everything. The new Prestige Classes are generally more interesting and useful than those in the previous expansion pack (Shadows of Underntide). The new feats, like the Prestige Classes, are also much more interesting and useful than the previous expansion. The list of epic spells, improved henchman, max level, and tile sets are all improvements for the game.
Hordes of Underdark also adds a new set of official modules with the expansion. The plotline, dungeon layout, puzzles, and feel of the modules are far superior to that of previous official modules (and even better than most player/fan-base modules). A major problem is that it was designed for single-player only. Technically, you could play the game multiplayer, but the player hosting the game would have to be well versed in using the DM Client commands from the Player Client interface to combat these "issues."
Hordes of the Underdark has also released more glitches and bugs than even the original unpatched game. Even after Hordes being patched, most users experience occasional freezes and crashes. This is not such a big deal when you have the auto-save feature turned on, but still detracts from the excitement of playing the game.
One problem that I have witnessed in Neverwinter Nights from the beginning is that there has never been a large player/fan-base Mods for high levels (level 20). With the new cap of level 40 in Hordes, I have still not witnessed many high quality Mods for characters level 20-40. Lastly, those Mods that have been designed well for the higher levels frequently have a bias for more warrior based characters.
For players whose main focus in NWN is the single-player mode and enjoyed the expansion of freedoms in Shadows of Underntide (classes, feats, etc), those who enjoy "maxing" out a character or designing super templates, enjoy designing their own Mods or like to be able to keep up with playing the most current Mods, then Hordes of Underdark is an excellent expansion. For players whose computer's limits were being pushed by the previous expansion (Hordes doubles the "recommended" RAM requirement), who play primary/solely multiplayer mode, or for those who get their kicks by challenging high-level content, then Hordes doesn't deliver as much as it seems to contain.