This reviewer practically dogged it. Well it looks damn nice.

Though its a bug feast.
Available off steam.
Dungeons & Dragons: 4th Edition represents one of the most drastic facelifts the long-running tabletop RPG franchise has ever undergone. The game's once ethereal elements have been turned tangible, its mechanics made far less punishing for new players, and its every component finely tuned to a state of balance that few other tabletop developers can match. It is as accessible as the game has ever been -- and, as a result, as adaptable as the game has ever been.
full review here:
http://www.joystiq.com/2011/05/25/du...erdale-review/