UNO Show 'em No Mercy game adds 56 more cards, special rules and super-tough action cards for the most brutal edition of UNO ever Tougher action cards, such as Skip Everyone, Wild Draw 6 and even Wild Draw 10 make game play merciless The Stacking Rule lets players pass the penalty (Draw , , , ) to the next player until whoever can't play has to take all the cards combined Whenever a '7' or a '0' card is played, players must swap hands with another player The Mercy Rule means that if any player gets 25 cards in their hand, they are out of the game More cards mean more chances to show opponents absolutely no mercy Makes a great gift to amp up the action on friends and family game nights, travels and parties