Battle of catapults is a simple 2D-arcade with catapults in the main role. The purpose of game is to destroy all enemy catapults and to protect the catapult, using a combination of a catapult and a gun. For achievement of the purpose it is necessary to use elements of an environment and geometry of a level because throw so far a shell on a straight line - it is possible not always. Also it is necessary to expect a direction and force of impact.