Blog Critics has posted its review of Mask of the Betrayer. While short, it's packed with many of the best things we've all come to expect from reviews of a truly exceptional game. Scoring MotB 4/5 stars, here's a portion of what the editor had to say:

This new expansion pack offers darker themes with the standard role playing/strategy action and with great mental puzzles thrown into the mix, so be ready for the challenge. New races come in the form of the elemental genasi and wood elves plus new character and prestige classes.

BlogCritics.org is a new site to me but it seems to have a good grasp of the quality of MotB. Head over and read the rest.