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

https://www.emergbook.win/slot-machines-used-to-tower-over-casino-floors-with-cabinets-more-than-40

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