I think there is a bug with the wall of the buildings in City. My units, sometimes, don't attack the computer's units when they are close to the wall, even if I move my units next to him, they won't attack.
Nice game, even though I dislike 10 units max on the map and 5 units max per group. 4/5
I had to restart the last level about 10 times before understanding how to beat that "boss" xD
Thanks goodness it doesn't restart at level 1 after you die.
Nice game, but would be nice if there was more upgrade or if the game was long with different, maybe, "mini-boss?".
4/5 for me.