The game itself is pretty fun, i‘d give 5 stars, at least after you buy the „no more ads“ option. But they recently reduced how much money you get massively, so earning enough money for upgrades is now impossible. I.e in campaign 9 bossfight they lowered earnings from 120k to 5k, when the next weapon costs 3.2 million... if this gets adressed i‘ll give 5 stars