Your ship has been trapped in a corner of space claimed by an advanced alien race. The aliens have mastered gravity, and use it as a source of power, and can even use it as a weapon. Luckily, you command a ship designed by NASA, the "National Aeronautics and Scratch Administration", that carries weapons which will enable you to battle your captors. Use up arrow to fire your thruster, left and right arrow to turn your ship. Spacebar fires plasma cannons (your primary weapon, as it is unaffected by the alien gravity field). Down arrow will launch a "dumb" proximity bomb that will fall toward the enemy gravity source and explode if it comes into contact with their ships or weapons.
