On one of the planets in a distant galaxy, earthlings founded their colony. Locals cultivate the fields and extract various minerals. You are in the game Tower Defense Alien War will serve in the detachment of soldiers who are engaged in the protection of the settlement. One morning while carrying the guard, you noticed that a spacecraft had landed from space to the surface of the planet. From it flew an armada of robots, which rushed in the direction of the settlement. Now you must deter their attack. To do this, you must aim the robots and open fire with your weapon. For each downed robot, you will receive points that you can spend on the use of massive skills.