The humans have left earth and are searching for a new planet to sustain life. As the remnants arrive, your mission is to defend the fortification wall from the incoming waves of aliens. Get inside your outpost and fire your weapons towards the aliens. You can also build different defense structures. Visit the armory and the lab for weapons and upgrades. You can also buy robot development and build blueprints and new technologies as well. To eject from an outpost, hit the space bar key. Use the W and S keys to look around the platform. Aim and shoot by using your mouse. You are the guardian of man kind so play your role to the end.