Enter a new dimension in adventure gamebooks when you step through the Forbidden Gateway. Nothing before has prepared you for this.A desperate letter summons you to a remote Welsh valley — a place which defies the light of sanity and science. Here the dead hunt the living. Strange and evil beasts roam the underground tunnels. Dark forces warp the minds and bodies of men. Ancient and dire prophecies are on the brink of fulfilment.Have you the courage and resolution to step where the shadows stalk and defend the future of mankind?In this battle with the forces of the Outer Darkness you will need luck, skill and determination. Equip yourself with two dice, a pencil and an eraser, and you are ready...