Really nicely put together; a complete and well-implemented fun game. The font is, as noted, a little hard to read, and it's sometimes hard to know why you're not allowed to buy a thing -- is it because you haven't bought one of the pre-requisites, or because you don't have enough money, or because you've bought it already -- and that does break the immersion somewhat. Watching a Lord attacking the enemy castle is highly amusing. Nice work!