Contestants play a version of tic-tac-toe by answering questions to win squares on a game board. The popular quiz show enjoyed many incarnations from the 1950s to the '90s, both in daytime and prime time, on NBC, CBS and in syndication.
1987
2014
1998
2016
1985
2003
2021
2015
1958
2002
1994
1986
1969
2020
