Slot machines used to be these huge, heavy cabinets often topping 40 inches...

https://www.bookmarks4all.win/remember-when-slot-machines-filled-entire-casino-floors-with-massive-cabinets

Slot machines used to be these huge, heavy cabinets often topping 40 inches wide and weighing hundreds of pounds. Now, you can play the same games on a phone screen just 6 inches across