Its year 3451 and aliens have invaded our planet. You are one of the few survivors left. Try to survive as long as you can and destroy their ships. Defend 4 different warzones against alien invasions until you eliminate all ships. Try survival mode: survive as much as you can or even if you are the best maybe you can even win! WARNING: large number of enemies are going to attack you,try to survive…if you can…your survival is unlikely