The zombies are back in time, but this time, they arises in the time of pirates. They are after your treasures and you need to eliminate them before they can even touch your treasures. You would start with just a gun and you can buy better weapons as you move from one level to another. The weapons that you can buy depends on your current level. Of course, your goal is to eliminate all of your enemies. Don't worry about level one as you would have an aerial support to back you up, but you would need to buy powerful weapons as you progress since there won't be anything from then on.