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.
Survive the night fighting off zombies from your barricade. Survive longer than a day by making use of the daylight hours effectively by repairing your barricade, searching for weapons and looking for other survivors to help repair and defend.
Droids are threatening world domination and there are only a few humans left to stand up to them! Defend key territories from an onslaught of merciless droids as you struggle to protect the precious resources you have left.
