Island in the sky at night is the loud fire fighting career, I have the most unforgettable memories! We are a large number of enemy fighters in air strikes! There was once a colony of peace, and now they have no choice but to protect themselves! To the sky to defend the island floating island it continuously for upgrading weapons to shoot down the attack helicopters, fighter jets and missiles! Mouse operation, click on target shooting, after the clearance of each of the points have been used to upgrade weapons and equipment.