Enemy Territory: Quake Wars

After they had fought out their civil war on their homeworld called Stroggos, the Strogg ventured out into space to conquer other planets and study other races to integrate them into their own. In 2060 they enter space above their next target: Earth. The Global Defense Force (GDF) is completely overwhelmed by the attack of this highly advanced force but they don't give up and fight for their survival. Ultimately Earth will fall into the hands of the Strogg and the events which lead to the beginn...