Invaders from the Boondoggle Galaxy have arrived to take over Earth. Take control of the powerful "OF-1" spaceship, and fend of the aliens. Destroy "POW" cases for items and special weapons. Obtain Red and Blue Pods to equip your ship. Red Pods fire the opposite way your fighter is moving, and Blue Pods only fire forward. You can also change the speed of your ship, to adjust to different battle conditions. Clear the five Combat Simulator Stages with and average score of at least %90, and graduate to real combat and everlasting glory!