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 you can play those same games on a phone screen just 6 inches wide. This shift means you can enjoy slots anywhere without the bulky hardware