Castles are a defense in and of themselves, but even castles must be defended and that's where you come in. You are the hand of God and you have the ability to manipulate the stick figures. When they show up on the screen you have to throw them in the air as high as you can and watch them come back down and splatter all over the grass. It's gory, and a bit ridiculous, but it is very fun and addictive. So use your mouse to start throwing those stick-figures around.