My mouse hates you, yet I can't stop playing!
Very well done game, with some minor bugs, for example, I had enough resources to buy gnomes but it wouldn't let me, I bought a pig farm and suddenly i can buy the 300 gnomes i wanted, so no big deal. Anyway besides the save function that is really needed but you already exposed your reason for it's inexistence, the game needs a better way to buy buildings and even buy or sell resources, this game is capable of killing any computer mouse!
As a function i would probably like if you are thinking of creating more games like this is to know your army's force and the enemy's army force after you fought him, because I had a pretty nice army and it got defeated and I had just done a dungeon with almost the same difficulty and was sucessful.
All and all a great game, hope you create many more interesting games as this one.