Troy is under threat once again and the enemy is stronger than ever before! Fortunately, so are you with some real firepower on your side this time! So long as you keep your aim sharp, and your timing perfect, you can win this war once again!
Defend the Earth from invading UFOs. Aliens are invading our earth and it is up to you to defend an important nuclear factory. Buy cannons, train new defenders and tell them what to do.