I realize this show was perhaps none too popular but how about The Magnificent Marble Machine?
They would have MORE of a shot with it today, with 2024 technology as opposed to 1978:
Tech: "We built a thirty-foot tall pinball machine for a game show!"
Network Exec: "Cool! How did you manage to find flipper coils that big?"
Tech: "What's a flipper coil?"
Then, the other problem: if your centerpiece is a thirty-foot tall pinball machine, you are either spending ALL your time in front of it, or you are strapping a totally unrelated front game onto it for the right to play it and your audience is bored, because they tuned in to see The Magnificent Marble Machine, not The Random-Ass Tedious Word Game.