It was 3027, I wasn't born yet. A worldwide tragedy started, extra terrestrial creatures planned to invade the earth. It was a war between us and them. Humanity vs Aliens All nations united, to fight against them. We succeeded. Yet, the government thought that they may again come back, so they made a worldwide plan. America sent satellites to alter the Earth's atmosphere and created a force field to protect us from any harm coming from the outer space. Russia trained their military to fight and survive alien invasion then sends them to space to check and patrol about what's happening out there. China upgraded our weapons and defense. They created battle ships and high tech laser weapons. All were unified in the fear that, aliens will soon invade the earth again.