Slot machines started as giant cabinet beasts, sometimes towering over 6 feet...

https://zanesnewthoughtss.evergrovio.com/posts/do-modern-slot-cabinets-still-need-cooling-components

Slot machines started as giant cabinet beasts, sometimes towering over 6 feet tall. Now, those same games fit in the palm of your hand on screens just 6 to 7 inches wide