Slot machines used to be massive, bulky cabinets often topping 40 inches tall...

https://www.pfdbookmark.win/slot-machines-used-to-fill-casino-floors-with-massive-cabinets-often-over-50

Slot machines used to be massive, bulky cabinets often topping 40 inches tall and weighing hundreds of pounds. Now, these games fit neatly on 6-inch phone screens, making it easy to spin reels anytime without dedicating a whole floor space