Each enemies you destroyed in field will shed a few Stars. Star is the currency within the game that you used to buy upgrades. Your boat uses a lot of weaponry and safeguard to guard you as you are fighting. You will need to upgrade all aspects of your boat if you'd like to live out there. Getting Star is easy, but you want tons of them only to upgrade one component of one's ship. As you have come here, we really recommend you to work with our Sky Force Reloaded generator.