Slot machines used to tower over players with screens 40 inches or larger,...

https://mag-wiki.win/index.php/Why_Do_Mobile_Slots_Need_Bigger_Buttons_Than_You_Expect%3F

Slot machines used to tower over players with screens 40 inches or larger, taking up a ton of space on casino floors. Now, these games easily fit on your phone’s 6-inch screen, letting you spin reels anywhere