You mission is to destroy all opposing forces. You can summon a zombie to the battlefield. Zombie and other summoned creatures will form the backbone of your army. You are doomed to fail without them. You can pan the camera by moving the mouse cursor to the edge of the screen or with A/D or Right/Left arrow key. You can also cast a fire ball. The Summoning is a fantastic puzzle game on www.flash-game.net. Have fun!