Fantastically deep history of plug & play videogame consoles

Back in the early 2000s, cheap plug & play videogame consoles became ubiquitous. I remember spotting them for sale everywhere from toy stores to Walgreens. Self-contained systems, they integrated one or many games instead of allowing users to swap in cartridges or CDs. Today, Frank Cifaldi of the Video Game History Foundation shares the deep and geeky history of plug & play as a launching point for his research on the TV Guide Quizmaster, "something so rare it might not even exist." Below are a few bits from the thread. See the whole thing on Twitter!