This game is difficult until you figure out that you get 10% income bonus after each level. Once that happens you start saving and the money starts rolling in.
I beat the boss with maxed out reload damage and bomber support (#3) with enough fire rate boost to use up my ammo. AVOID accuracy upgrade, since you want to spray the big blimps a bit to clean up the small bloons.
nice concept, but horrible unit balance and no formation saving makes the end game tedious. Not to mention after India, Russia and Greece there is no challenge left in concurring Europe.
Aburaishi, in the later levels you want a large size and a long invincible time. Destroy the dots while you are invincible. The larger size helps you destroy more dots. Good game because you have to shift strategies as you play.
I would give 5* if the music were off by default and there was a volume control. Otherwise it's a 5* game, it's just I have to listen to that music too long!
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