The game's system is somewhere between air combat and naval warfare. It's a lot like the old game I played as a kid, and we control fighters to destroy the enemy's fleet. We crossed the line of fire and shot down one enemy after another，fighter、striker、bomber、gunship、battleship and airship. 1.up to 2 big kinds of enemy air and sea ; 2.up to 6 kinds of enemy air army; 3.up to 3 kinds of enemy navy; 4.up to 20 missions.