Slot machines used to fill entire casino floors with cabinets over 40 inches...

https://wiki-club.win/index.php/What_Is_the_Real_Footprint_Difference_Between_One_Casino_Cabinet_and_One_Phone%3F

Slot machines used to fill entire casino floors with cabinets over 40 inches tall. Now, you can play those same games on your phone’s 6-inch screen anytime, anywhere