Slot machines used to be these huge, heavy cabinets often topping 40 inches...

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

Slot machines used to be these huge, heavy cabinets often topping 40 inches wide and weighing hundreds of pounds. Now, you can play the same games on a phone screen just 6 inches across