Nothingness: you could use simple thick carton squares. On one side you have a questionmark, on the other side the espionage piece. I admit it wouldn't look attractive, but it's simple and effective. The only difference with the real game is that you know when your opponent detected a piece.
(verberg) U kunt zien hoe BrainKing zich over de jaren ontwikkeld heeft door het "Wat is nieuw?" archief te bezoeken. (pauloaguia) (laat alle tips zien)