Slot machines used to be these massive cabinets, sometimes as big as 50 feet...

https://kylersexpertthoughts.almoheet-travel.com/why-does-a-slot-interface-not-just-shrink-the-desktop-version

Slot machines used to be these massive cabinets, sometimes as big as 50 feet tall in casino showrooms. Now, you can play similar games on your phone with just a 6-inch screen