Download breathtaking alien game and get ready for spectacular adventures in the outer space! The distant future... A devastating space war is taking place between mankind and a lizard race. A ring of planetary systems collectively called the Defense Races prevents the enemy from entering the heart of the Confederation, where human colonies are located. The Defense Races have placed battle turrets around each system. These turrets, called Defenders, are the sole hope of humanity. Download alien game and don’t let the enemies occupy the planet! Defend the cities against the alien invasion and meteorites in this 3D turret space shooter. Download alien game totally for free!