Wooden boxes-It can be shot away by cannon;
Glass boxes-It can be shattered by cannon;
Moving Boxes-The boxes keep moving, making it harder to hit；
Cannon system-Players can unlock more than 15 kinds of cannons which have different styles;
Each cannon has different shapes and shells, and can also unlock powerful skills, such as the laser, black hole, continuous shooting, etc.
Dont you want to have a try? And also let us know and leave some comments if you like this game.