Slot machines used to be massive, with cabinets over 50 feet tall on casino...

https://charlottessuperjournals.tearosediner.net/how-big-is-a-slot-machine-cabinet-in-a-casino

Slot machines used to be massive, with cabinets over 50 feet tall on casino floors. Now, you can play the same games on your phone’s 6-inch screen anytime, anywhere