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

https://xn--toponlinecsino-uub.com/why-can-digital-reels-do-things-mechanical-reels-cannot/

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