Slot machines used to fill casino floors with massive cabinets over 50 feet...

https://ellassmartperspectives.urbanvellum.com/posts/the-simplest-timeline-of-slot-machine-evolution-from-1895-liberty-bell-to-smartphone-slots

Slot machines used to fill casino floors with massive cabinets over 50 feet tall creating a loud, flashy atmosphere. Now you can play similar games on a 6-inch screen right in your pocket