Designing a full-sized game for a five-inch screen is about smart choices, not...

https://wiki-spirit.win/index.php/How_Do_Mobile_Slots_Keep_Animations_Without_an_App%3F

Designing a full-sized game for a five-inch screen is about smart choices, not just making everything smaller. It means focusing on touch-first controls that feel natural on a small display. You decide between portrait or landscape based on what fits best