Love it!
2 minor issues I had is that I really wanted a refresh button but couldn't find it, and also didn't read the description before finishing the game (to avoid spoilers) so didn't know that scrolling was a functionality, that
The AI is great, I also would love more levels, or a configurable sandbox where you can choose how many castles there are, how many AIs and how "unfair" the AI is (by allowing it to spawn more quickly than you)