Shadow Buff.
A sheet being stretched across one end of the room, one of the players is seated upon a low stool facing it and with his eyes fixed upon it. The only light in the room must be a lamp placed upon a table in the centre of the room. Between this lamp and the person on the stool, the players pass in succession, their shadows being thrown upon the sheet in strong relief. The victim of the moment endeavors to identify the other players by their respective shadows, and if he succeeds the detected party must take his place.
It is allowable to make detection as difficult as possible by means of any available disguise that does not conceal the whole person, any grimacing, contortion of form, etc.