It from the of the oldest game s played by the couples. If for example the cards touch the middle it represents a muck and your cards is dead. It is an online game app which allow you to challenge family members on Facebook once you've linked your bank account. https://taigamepc.com/giai-tri/game-bai-rikvip-trai-nghiem-va-cam-nhan-cua-mot-game-thu-lau-nam/29