A 3D indie game. Simulate anti-aircraft gun attacks on aircraft. In the game, you will use anti-aircraft guns to shoot at invading planes, which will drop bombs on you. This is a shooting decompression game where planes will randomly appear in the sky and fly towards you. You need to control an anti-aircraft gun to aim at the plane and shoot. You need to accurately determine the flight trajectory of the aircraft in order to shoot it down accurately and protect your position, of course, the shells are free.