This is a simple shooting game where you defend your ship with machine guns so that it doesn't get sunk by enemy attacks. As the level and stage go up, the number of enemy planes will increase and the difficulty level will go up, but as the stage goes up, the number of allied ships will also increase. Ships can be moved freely by tapping, so place them so that they are not completely destroyed. Two cruisers, three heavy cruisers, and four battleships and players will sink them. If the formation of enemy planes passes through or all enemy planes are destroyed, it will be cleared and will be repaired once. In the end, we will create an invincible fleet so as not to be annihilated.