Mattel Games UNO Show 'em No Mercy Card Game for Kids, Adults & Family Parties and Travel with Extra Cards, Special Rules and Tougher Penalties.UNO Show 'em No Mercy is our most brutal UNO game yet! It has a ton more cards with WAY tougher penalties (draw 10 cards anyone?) and new rules that will have players stacking, swapping and drawing more cards than ever before! And there's even a Mercy Rule (yes, we get the irony) if things get too rough. There are two ways to win in this merciless version of the classic game: get rid of all cards OR knock all other players out of the game! Oh and if