Unidentified aircraft intruded into our territory and damaged our ships. Stand by to fire. Defend the territory. Destroy the unknown aircraft as soon as possible to ensure that our battleships are not destroyed! Anti Aircraft, 3D Game, Arcade, Shooter, Defense, Battleship, Aircraft, Shoot, Arcade, 3D, Action, Gameplay, Survival, Enemy, Weapons, Strategy, aerial attack, defense game, online game, mobile game, free game