Castle TD is an exciting action game. This is unblocked game for school. Don’t miss the chance. Play it now to bring you more fun. The enemies are invading. So your mission is to protect your castle by using powerful weapons and dark magic in this challenging. You need to purchase the cannons and place them around the long on path to shoot down all the incoming enemies. That’s dangerous. Try your best and you will do it. Wish you great time.