Slot machines started as huge cabinets stretching over 50 feet of floor space....

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

Slot machines started as huge cabinets stretching over 50 feet of floor space. Today, they're mini devices you can play on your phone’s 6-inch screen