No posts yet? I'll start. Just some observations, no spoilers.
I just finished a few days ago, and I have to say that I was pleasantly surprised. It's actually a pretty good game. The beginning had me worried at first. It felt like you barely needed to interact to advance. You just moved Graham around and every once in a while you had to click on something to do something to progress. I thought the whole game was going to be like that. But, thankfully, it settled into a more traditional point-and-click adventure once the main story started. (I think the beginning was mostly to get you used to the feel of the game). I actually found myself being stuck for a bit in places, which I didn't realize how good that would feel.
The setting and story feel like King's Quest. The humor could be hit or miss though. The voice acting is very good. There was one part with Young Graham in particular. And there were a few puzzle elements that were pretty good. All in all, I really enjoyed it.