Airplane Shoot - many possible

This game's goal is to shoot airplanes as many as possible.
First, if touch screen point where you want, missile is fired at the bottom of the point.
After the fire, if the airplane is hitted, the airplane is exploded and another four missiles are fired again to upward, downward, left and right directions.
The game point is to shoot many airplanes.
Be a shooter and a victor by shooting many airplanes!
Compare your score with other's in global leaderboard.