Count me in for Art Fleming's Jeopardy! and Concentration being my oldest memories of game shows. Password is probably in there somewhere also but I don't recall which version. I've watched too many old episodes to be able to say clearly which episodes I watched when they actually aired.
Somewhat later: The Gong Show, The Magnificent Marble Machine, Clark Pyramid, Match Game 7x, Tattletales, Pay Cards!, Cross-Wits, Split Second, Dawson Feud, Name That Tune, To Tell The Truth and Beat the Clock. Oh, and Musical Chairs. And Hollywood Squares, and Storybook Squares.
I think Chris still gets to tell me to get off his lawn.