Choose your character to your liking: angel or demon. Your mission is to destroy the evil or good. You get transferred to a world where you have sacrificed their lives to overcome the opponent. Using the cursor keys, inspect area and finds a weapon that gives you an altar. Click it with your mouse and adjust the strength and direction of the shot. You need to get to an opponent who is on the definite distance from you. For the points received can you improve your altar.