Swipe to lock on! Upgrade the battery to defend the base!
Game feature - Easy to play. Swipe to lock on. Tap the button to change the battery. - This is a shooter game. But don't worry about your reflexes. Strategy is more important for this game! - 4 batteries, 4 support fires, 4 facilities. All of them can be upgraded. - 22 kinds of enemies. Each stage has a huge enemy. - The story is revealed when you beat the each stage.