One distinctive aspect of Canasta is the use of wild cards, such as jokers & twos, which can be used to replace any card in a meld but have certain limitations on the number of cards that cteen patti get apkan be used in a single meld. Players must balance attack and defense throughout the game because of the complex scoring system in Canasta, which awards points for melds made and bonuses for canastas formed. In this interesting variant, Contract Rummy, players must first fulfill contracts, which are particular requirements for every round, before they can lay down their melds.