Having the ability to sell chips would be nice. I experimented with the "hurt" chip and went from an undefeatable build to limited turns.
So, the basic game is solid! Well done. It works, and is enjoyable.
As for advancement, I might add levels you can reach where there are harder things, or a big enemy you have to defeat in X turns. Or maybe upgrades? Or maybe a win condition.
Once my army got to about 100, I could beat anything the RNG could throw at me. Army 133; Lands 13; Peasants 280; Gold 2354
Now fixed.
The Saplings/ trees numbers don't update. I do run out of trees I can chop, but I have no idea how many trees I have. (It always says 0 saplings and 10 trees.)
Also, if I hold down the "plant a tree button", it freezes and I have to take my finger off the button for it to refresh. Although I think this may have to do with the "limit" of trees that I can't see.