Guardian Castle is a sniper tower defense game for you to test how fast and accurate you can shoot.  In Guardian Castle you are perched high above the castle in your sniper position.  You have your trusty gun and plenty of bullets but the enemy army is charging and you need to defend your castle.  Use your sniper and shooting skills in the Guardian Castle first person shooter video game to shoot the bad guys before they storm and conquer your castle.  Kill enough soldiers and you can earn money to upgrade your guns and get more powerful weapons to defend your castle with.