Free shooting games experts are exactly what this game needs. If you got tired of those child easy shooting games, well you just discovered the real thing for you. Being a captain of the US anti-alien special force, you get to operate the latest human made technology in the final fight against alien invasion. Those aliens have more firepower on their disposal, their armors are far more effective than yours, but you have determination and a spaceship that can change directions much faster than theirs. Strategy and intelligence will help you push those bastards back to where they came from.