Art is cute and clicker games are always tried and true! (also totally missed the chance to call one of the soldiers a lieten-ant hahaha ok i'll stop) Any feedback I had was already mentioned in other comments, but just to mention it:
- Early game is definitely a bit slow, lots of clicking for not much reward early.
- I think locking later game options until you've progressed more would make the curve overall feel more satisfying. Having some enemies spawn while I'm still making less than a food a second with no army made the curve feel a bit weird to start out.