In this game you need to defend your castle from the enemies. In the beginning you only have yourself and a bow. Shoot the enemies ala bowman: clicking somewhere on the screen and dragging the mouse in the direction opposite to the shot. The farther you drag, the stronger the shot will be. Killing enemies you earn money. This money can be spent for a whole lot of helpful things like new types of arrows, ground troops that will hold the enemy back, towers and catapults that you will shoot too etc.