Slot machines used to fill casino floors with huge cabinets over 40 inches...

https://www.ready-bookmarks.win/slot-machines-have-come-a-long-way-from-their-bulky-40-plus-inch-cabinets-on

Slot machines used to fill casino floors with huge cabinets over 40 inches tall, but now you can play those same games on your phone’s 6-inch screen