The dealer starts by asking another player for a card needed to complete a family. If the other player has the card he must give it to you. You may continue asking for cards until you make a mistake. When a mistake is made the player who was asked for his card takes his turn to request cards. That player can retake the cards taken in the previous round.
When a player gathers a family he must put the 4 cards face down on the table in front of him. The winner is the player with the most Families.