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, heavy and loud. Now they fit on your phone’s 6-inch screen, offering the same games anywhere you go