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

https://celebmeadow.com/from-floor-standing-machines-to-pocket-screens-the-shrinking-footprint-of-slot-games/

Slot machines used to fill casino floors with cabinets over 40 inches tall, making a real statement in size and presence. Today, many of those same games fit comfortably on phone screens about 6 inches across