Neverwinter Nights 2: NWN 2: MotB Review at Game Informer

Titled "Flirting With Greatness", Game Informer Online has posted a short but stellar review of Mask of the Betrayer. Handing MotB a 9/10 score, the reviewer says:

Forget about the problems that the original NWN 2 shipped with. That game's frustrating AI bugs, crappy interface design, and questionable performance have all been fixed in the year since its release. Mask of the Betrayer (and the latest patch for the base game as well) plays like NWN 2 always ought to have. The difference is massive.

And from the conclusion:

Any D&D player who has flipped through the Epic Level Handbook knows that some seriously awesome things start to happen to a character around level 20. It's like puberty, but instead of turning into a gangly teen, you're ascending to godhood. Mask of the Betrayer deftly harnesses this high-end content to give the player an array of intriguing challenges. Whether you prefer the straightforward style of fighter or the subtlety of a caster, you'll appreciate the tweaks to interface that make it easier for you and your allies to execute appropriately epic attacks. Those adjustments, along with an excellent storyline involving the Red Wizards of Thay, make Mask of the Betrayer a rare expansion that actually surpasses the base game in terms of gameplay, implementation, and design.