The Hollywood Squares | 1966
An elaborate game of tic-tac-toe that involves two players and nine celebrity guests (each occupying one square on a large board). A celebrity, chosen by a player, is asked a question. The player agrees or disagrees with the celebrity's answer.
A correct guess wins that player the square; an incorrect guess awards the square to the opponent. The first player to acquire three squares in a row -- up, down, or diagonally -- is the winner. A cash prize of $200 is awarded per game and players can compete until they reach the maximum prize of $2,000.