Game Manual GAME OBJECTIVE A space centre is protected against meteorite attacks and strange enemy rays by a massive shielding complex. The players patrol is situated behind the outer wall and must protect the complex from destruction. The patrol is moveable with the assistance of a joystick and with the use of a firebutton can eject small rockets to neutralise the enemy attackers. The aliens attack from all sides and appear in different shapes and sizes. The player has only one chance! GOOD LUCK!