Silver key brown is a key and reward from the Shades of Mort'ton minigame. To obtain it, the player must kill either a fiyr shade or a asyn shade and then burn its remains on a pyre. The key may be used to enter the Shade Catacombs and then open the correctly coloured chest. It will open a silver-framed chest with a brown lock. This type of key can be used to open any door within the tombs, giving the player unrestricted access to all areas.