Slot machines have come a long way from their bulky 50-foot-wide casino setups...

https://varimail.com/articles/what-is-responsive-design-in-a-mobile-slot-game/

Slot machines have come a long way from their bulky 50-foot-wide casino setups to sleek devices you can hold in your hand. Today’s slots fit comfortably on phone screens just 6 inches or so, letting you play anytime without the noise of a casino floor