Defend Your Castle is a strategy based action game. Your kingdom is under the onslaught of an invading enemy, and you must defend your castle. You will need both speed and agility to survive. To kill enemy units, pick them up with the mouse and fling them through the air. Gravity should take care of the rest. At the end of each stage, your points will be tallied. You will then have the option of purchasing upgrades. The neat graphics and the attractive sound of the game make the gaming experience even more addictive.