Despite its name, Death Free Action is full of death and destruction in the form of shooting down WW2 era planes and spaceships.
Your weapon is a tank's cannon which only fires shots when moved. Controlling the cannon is done by placing your finger on screen, moving it, and releasing it.
Levels lasts 60 seconds and are completed by killing a certain number of enemies.
The game is fairly easy as planes follow the same pattern so it becomes easy to predict where they'll fly.