"Join Jack Riley on his way into another dimension. Innocent, he is caught in a struggle over the force which will allow the powers of darkness to rule the earth. Help him decode the secret of the castle of the Order of Tunguska. The secret is hidden somewhere here in this realistically rendered 3D world. These dark corridors and huge halls are the home of cruel creatures of the night. Fear your adversary as your darker inner self, and regain your faith, love and hope."