Pinball Machines. Yes. Seriously. Roman Mars (yes, that's his name!) of 99% Invisible explains why (via Gizmodo): I didn't include the images in this because there are a number of them. But I was able to play a replica of the BallyHoo game at the Pinball Hall of Fame in Las Vegas. Complete game of chance, just like slots.. so it lost my attention, as I went off to play PunchOut!, Joust, Konami Track and Field, the original Mario Brothers (not Super), and Spy Hunter. BL.