Fly with the arrows or drag, fire with space or tap, and press down (or swipe down) to launch a cluster bomb that bursts into a ring of fragments — save it for packed formations. The colour tells you the enemy: red raiders weave and shoot from ahead, amber gunners volley spreads and tail-gun you from below, violet darts dive past and fire back up. Bank +2,500 every 20th kill. One hit and you are down.