You pilote a space fighter, equipped with a protection shield. You must enter a battle against alien spaceships. To start the game, click on your fighter. Your ship is then linked to the mouse and you can direct it by moving the mouse. To fire, click the left button. But take care! The alien ships drop bombs and your shield fails after 3 impacts. Once it is destroyed, you are vulnerable and bombs will cause your death. You can regenerate the shield by collecting the small yellow square "fire up", but they are rare, small and not easy to be catched... Good luck.