5 stars: Game is good. Gameplay... Ehh. Planes get
4 stars: Decent shooter that does the basics well. There's a good amount of content and the regular updates have added some nice new features, but lingering issues remain. Ship upgrades are extraordinarily expensive, and there is a critical bug in several stages (66 for example). Off-screen enemies can't be shot down, making it impossible to complete all challenges.
4 stars: Good graphics and engaging game play. Levels are getting hard as we go forward.
3 stars: Convoluted system of upgrading that spans multiple tabs, all with options to use real cash. You don't get very much gold in regular play so if you want to be able to upgrade and survive higher levels you're forced to watch ads or complete missions, which also require ads to even play. No idea what the puzzle pieces mean or what the equipment does, there's no explanation anywhere. A lot more of a headache than it has to be
3 stars: Starts off great, could become expensive....great graphics, great gameplay, rewards for watching ads, etc. All good, then you hit a brick wall on your progress and the only way to go further is buying expensive
2 stars: Was kinda fun and kinda difficult. I even paid for a fighter and what do i get in exchange: an update which added new enemies(which is cool) and changed their weapons/projectiles, making it even more difficult to avoid getting hit. The author also lengthened the duration you had to wait to reopen the con...