The term 'Whist Variety' refers to a type of card game that is played with four players. The most common variation of this game is called SOLO, which is a four-player game where each player plays individually against the other three. The goal of the game is to win the most tricks, and the player who wins the most tricks is declared the winner. SOLO is a popular variation of Whist Variety because it allows for more strategic play than other variations.