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.