In the late 80's, KFRC (AM) in San Francisco tried a game show format because their once #1 rated Top 40 format had cratered in popularity due to FM competition. Contestants would call in to play. Given the scope and budget of radio, the prizes were things like toaster ovens. In keeping with TV game shows, there was a lot of recorded happy-music and sound effects.
I listened for 10 minutes once and got a headache. It was awful. Some of the worst radio I had ever heard. IIRC, the format lasted about a month