Now comes Gravy, which the linked story bills as The Price is Right mixed with a home shopping channel.
The app offers cheap merchandise and small cash prizes for guessing the prices where the merchandise will sell out. See the Tech Crunch story for the gory details. Local comedians host the live show on a rotating basis, and the audience so far numbers in the hundreds. Not exactly a millennial craze, but that's what the creators are eventually hoping for.
All these live game show apps seem designed for young'uns with short attention spans. Our little genre has long been known for the dreaded old skew, so the creators of these apps usually emphasize how they want to appeal to millennials. That makes everything sound young and sexy and exciting, or so the theory goes.
If HQ is fading, I don't have a lot of belief in other live game show apps. But hope springs eternal, to coin a cliche. Even in game shows.