I played two games yesterday with my friend; one with the basic intro and one with randomly selected cards. Both games had castles. The second game I had a pretty good play where I used charm and $8 to gain province, sprawling castle and a duchy all in the same turn. I got destroyed both games since while I was trying to piece the new cards together and experiment, my friend was abusing big money.
That happens when I play my grandma all the time. Just as my 5-province megaturn engine is up I notice she's already grabbed 4 provinces and a duchy with smithy BM.