Easily a top 10 game. Yes, its very addicting, polished and professionally made, there shouldn't be any doubts about it. I don't see a reason to comment much on the good sides since there are a lot and many mentioned it before - next big thing imho. I like it even more than Umblight tbh. The only few things that I didn't like - Background of main menu and tooltips. For me they were very intrusive and taking a lot of attention, especially the white color. The tooltips also blend a little bit with the background due high opacity but yet again, both of these things are my personal feelings, maybe others will disagree with that.
P.S. Chirping birds on forest bg was an excellent little detail.