In the Middle Ages, during which some wars began to use new weapons. One of the inventors came up with a gun. Today in the game Cannon Ball you will manage one of them and fight against an opponent. In front of you on the screen will be seen the enemy soldiers, who is behind a certain shelter. Clicking on the cannon will see the dotted line. With it, you will need to set the trajectory of the shot. When ready, shoot and if your calculations are correct, then the core of the flying along this trajectory will hit the target and destroy the enemy.