Operate the turret to move the battery, aim at it and fire a bullet to defeat the enemy. You can move the camera with the stick on the play screen, lower left. The aim can be moved by dragging the screen. There are stages that become clear over time and stages that become clear if you destroy all targets. There is a radar in the upper right of the play screen. You can get scraps by defeating the enemy. From the shop, you can use iron scraps to strengthen your weapons. ※ An additional 500MB of data is downloaded.