By the time you read this communique, we of the Interstellar Space Force Command will have been destroyed. The evil Gorfian Empire has launched an all-out attack. You are Earth's last hope! Your assignment is to repel the invasion and launch a counterattack. You will engage various hostile spacecraft as you journey toward a dramatic confrontation with the enemy Flag Ship! You will be rewarded for your success with promotions in rank and praise from a grateful planet. But you must act quickly, Space Cadet! Brief yourself on the Gorfian Robot Armada and then attack before it's...TOO LATE!! The object of GORF is to accumulate points by destroying the various types of enemy spacecraft you will encounter as you attempt to complete a variety of space missions.