Siege! The enemies surrounded your fortress! The waves of their numerous hordes come one after another, but the defenders are not going to give up, there is a huge catapult in the fortress with the help of which you must destroy all enemy troops. This is not a regular shooter game as you might have thought at first. First of all each successful shot depends not only on your accuracy, but also on the catapult tension force. Second, you will need to solve economic task as the balls having good percussion force cost money which you can earn making successful hits.