Eventually, both strategic vision and flexibility are needed to become an expert at creating melds and sets. Jokers and wild cards give the game of rummy an exciting new level of complexity. These one21 slotsadaptable cards are extremely valuable assets in a player's hand because they can be used to form sets or melds in place of any other card. Knowing when & how to use them effectively can make or break a game, but their power comes with responsibility. Using a joker too soon, for example, may restrict your options if you later need it for another meld that could have been finished without it.