Defending your castle is simpler than history might have you believe. Simply position your mouse over an enemy troop and use the left-mouse button to pick him up. Make a throwing motion with the mouse, releasing the button to fling your unfortunate victim through the air.
During nightfall, you’ll have the opportunity to upgrade your castle.
Repair Damage: Fix damage incurred to your castle
Upgrade Walls: Increase your castle’s ability to withstand the onslaught
Temple: With this upgrade, you can drop enemy units (gently) into your castle to convert them to your side. These converts can be trained or deployed as kamikazee units.