The joker can be played to any trick and always wins the trick to which it is played. If the joker is led to a trick, the second player may play any card and the other players must play the same suit as this second card; the joker wins the trick.
Are Jokers Used in Poker? The vast majority of poker games do not make use of the jokers; they are removed from the deck before the game begins. However, some players like to make use of jokers as wild cards in home games. Jokers also notoriously feature in some forms of video poker as wild cards.