Eh, I think it's been getting under-reviewed... It's true (as Tom says) that there isn't a lot of variety in the missions, but the world is so satisfyingly huge and interesting that I've been enjoying it greatly. It does some interesting things with stealth that I don't think have been tried in other games, like social stealth, in particular-- act normal and guards won't bug you, but if they spot you running around and jumping off buildings like a doofus you'll catch their attention and they'll come after you. As far as I go, it scratches a lot of the same itches as the original Thief games-- it's almost pure exploration, and at last I know that if I spot a huge tall tower on the skyline, I not only CAN climb it, but I will be rewarded for climbing it! I mean, I would have tried anyway (I've covered almost every reachable spot in most of the Thief games, thanks to long sessions with rope arrows and so on), but it's cool to have it part of the game.

I'm really enjoying it, anyway. Lots of exploring, yay.