You are the captain of a research ship that travels the galaxy and searches for habitable planets. One day your ship was attacked by an aggressive alien race. You will command the defense of your ship in a new exciting online game Space Battle Defense. Look carefully at the screen. Before you will be visible to your ship, which will fly in space. Cannons will be installed on its surface in various places. Alien ships will approach you from different sides. You control your guns will have to fire at them. Shooting accurately, you will shoot down enemy ships and get points for this in the Space Battle Defense game.