Fun concept but way too easy. I was able to finish all 80 available levels in a little about 3 hours by just using the basic infantry unit. The screenshots on the play store show a morale meter but there is none in game. There needs to be some sort of consequences for just sending endless waves of weak units in order to add a little depth to the game. I was able to beat some levels without even looking! All I needed was to tap the deploy unit button over and over again to win.