Captain Skyhawk

The player takes on the role of a fighter pilot who has to fend off an alien invasion. Aliens have invaded Earth and set up four land bases. These bases are designed to siphon off the Earth's energy and transmit it to their mother space station. When the space station receives enough energy, it will destroy the Earth with a massive laser explosion. The player must destroy the enemy bases and then attack the space station itself. In the course of the game, scientists are working on a top-secret neutron cannon. In several missions, the player must send supplies to the scientists working underground. Sometimes the aliens hold a scientist captive. Then the player must defeat the alien base and bring the scientist to safety.