- After selecting your game mode using either button on the main game screen you can use the mouse to aim your shot and click to fire. The line from your ship to the mouse position determines the speed and angle of your shot. In Battle Mode, players take turns to hit the other ship with a missile. In Puzzle mode, the player must fire the missile into the black hole. There are 3 planet types that have different masses and affect your missile with different strengths. Use the planets to your advantage to curve missiles around them.