Ok, I started this game and thought it was going to get a 2 rating. Then played for a while and thought it should get a 4. Once I got the 100% completion bonus, a 5 for sure!
Game was great until I got to the E level pack. It was just too hard, I don't know how anyone could have got some of those answers. Oh, and I got the Balanced Diet badge before the Diamonds Take Forever badge! :P