Certain cards are called wild in many variations of rummy; these can stand in for any other card when it comes to forming runs or sets. For playmotherboard 4 ram slotsers hoping to outplay their rivals, knowing how to use wild cards effectively can make all the difference. When a player has multiple cards that are nearly in a run but is missing one important card, for example, using a wild card can finish the run and possibly result in a winning hand.