Retribution

Within the soon future of 2021, the alien race of Skcorian invaded Earth, with the soul desire to eliminate all humans. Powered by rage for the humans taking their home, the Skcorian have created the most powerful army of automated robots and aircraft witnessed by humans. As they do the Skcorian's bidding, one by one killing millions, society soon falls to to the world's united military defense against the Skcorian: The Retribution.