Similarly, I was surprised once when I figured out that three of the longest-lived word games, Password, Pyramid and You Don't Say!, aired concurrently only from January to March 1979 (or whenever local stations gave up on the Peck YDS!).
During 1972-73, there was a generous selection of Q&A games on the networks' daytime lineups: Jeopardy!; Sale of the Century; The Who, What or Where Game; Three on a Match; Split Second and The Joker's Wild. All were canceled by 1975 and (since Three on a Match hasn't been revived) that combination has never reappeared.