Pretty nice game. I'd like to see a few additions though:
Upgrades to increase fire rate and reduce recoil though
Different radar icons for bombs vs. airplanes and to differentiate airplane sizes
Radar placement is also kind of poor, I rarely found myself looking at it.
The symbols on the planes and bombs weren't explained--apparently one of them was actually helpful, but it wasn't made clear at all
Quite fun so far though.