Enjoyable game, but has quite a few issues that bring the rating down significantly. 1) Many reviews claim this is an ad-free game. That is incorrect. There are a LOT of ads. 2) At the conclusion of each level, there is an option to watch an ad to increase the cash you win. My issue is that regardless of what I select, I am forced to watch an ad. If I chose not to receive the bonus (under the assumption I wouldn’t see an ad), I still have to watch an ad AND I get no money. 3) There is no clear indication of what some items do. I collect ‘parts’ for each item (plane, bombs, gun). But cash seems to be the most important element as that’s how you buy upgraded weapons. So what’s the point of parts? 4) Similarly, why do I have multiple planes, bombs, and guns to choose from? How do they differ? There is no clear reason to upgrade a plane from the starter to the second plane (assuming you’ve spent in-game cash to level up the start plane) as the stats are so similar. 5) Even when I’ve toggled my phone to Silent, every ad plays at regular volume. So I can’t play late at night without disturbing others.