The game goes on until a player declares "Rummy" and wins when all of their cards are formed into sets and runs. Rummy calls for memory, skill, and voda rummystrategy. Players have to know which cards are in their hand & which cards their opponents have discarded. Keeping an eye on card movements reveals important details about opponents' collection tactics. Tracking the cards that have been played makes it easier to decide which are still in play.