Slot machines once towered over casino floors with cabinets more than 50 feet...

https://sierra-wiki.win/index.php/Why_Do_Slot_Machines_Take_Up_So_Much_Floor_Space%3F

Slot machines once towered over casino floors with cabinets more than 50 feet tall or screens over 40 inches wide. Now, many games fit comfortably on phone screens just 6 to 7 inches across