How many game shows have or had moving floor objects? That is, where an set piece on the floor, or the floor itself, moves -- onscreen, without any apparent human intervention. (not counting flat, sliding prize doors)
TPiR: The prize turntable
Match Game ‘7x: Turntable, with contestants on one side and Super Match on the other
60s/70s Dating Game: Twin turntables, including a wall section that conceals the bachelors or bachelorettes from the one asking the questions
60s/70s Newlywed Game: Contestant seat sections slide together at beginning, slide apart at end. Also, exactly once I saw the prize platform make a surprise 180-degree turn (washer and dryer in front, bonus dishwasher on other side).
Let’s Make a Deal: The large “boxes” on the stage floor, the ones that “open” by moving, unattended, to the side. Also, wasn’t there some prize turntable with a light blue vertical wall section early on in the show’s run? I distinctly remember seeing it emblazoned with a 4 once, and Monty identified it as “Door Number Four”. (April Fools gag, perhaps?) It also showed up, sans the 4, on some of the earlier Family Channel episodes.
New Treasure Hunt: The entrance at the top of the stairs where the prize boxes live. These appears to be dual 3D set pieces, rather than doors per se.
Musical Chairs: The contestant chairs slide in and out.
Some talk shows had moving set pieces. I think the Pat Sajak show had the band platform slide in slightly during the opening sequence. And I seem to remember some evening talk show from 1971 or so in which some 3D structures moved to either side as a guest walked in (
).