Pull the gate up in this defense game and make sure none of the attackers makes it through. You will be in charge of keeping the fortress secure as you are under siege from a race of barbarians. Use the cannon to shoot and hire units to fight.
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.
