Emergency! Moon Alert ... Space Fighter 7 is blasted by the alien attackers; your hope for survival rests in reaching the moon-base from the wreckage of your ship. Moon Rova appears undamaged and armed with bilateral photon cannon and perpendicular jet boosters, you set out across the rugged terrain; but the aliens have located your crash site and are even now scouring the planet's surface. Accelerate, brake, jump over canyons, blast rocks, zap the aliens and above all keep a cool nerve ... one false move and it's all over! Good Luck!