You control a ship with your left thumb, while targeting and blasting away enemies with your right. To shoot, you must have your left finger on the screen, or else the ship will not do anything. When you hold down on the screen for a longer amount of time, the bullet/cannon power builds up, and when released, can blast multiple enemies into the yellow particles that you must collect. There is also another control scheme, and that is a virtual on-screen control stick (not the default). You can collect different powerups, and gain combos while flying through the levels.