I have never asked TL for anything but I want to second the OP, Castle Story is one of the best free to play games I have ever played. It has an engaging story, and it balances the premium currency (gems in this case) in a way that doesn't make me feel exploited. So I just want to add that.
Plus it has you guys, who are all way better at the game than me, especially Dabag (that goal thread ), who are always posting screenshots and hints on quests.
Thanks