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

https://telegra.ph/Why-Does-a-Smartphone-Have-No-Permanent-Slot-Machine-Footprint-10-05

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