The galaxy is in danger. A surprise attack was launched and it is up to you to defend Earth. Each level has a different objective so make sure you read through the words. You will be confronted by multiple enemies and you are to dispatch them without mercy. The controls are not the easiest, but they are easy enough to get the hang of quickly. To autofire, press the 'Shift' key. To shoot, press the space bar. To do a Mega shot, hit the 'Z' button. To move around, use the arrow keys. Get out there and defend Earth, and the galaxy, in this space flight game.