Astro Fighter

The game of Astro Fighter consists of 4 waves and a refueling stage, which are then repeated with increasingly higher difficulty. The player's task is to eliminate the four successive waves of different types of attacking craft, while avoiding being hit by missiles and bombs, and then refuel by shooting the 'GS' ship before repeating the process. The player starts with 3 lives and receives a bonus life on reaching a score of 5000.