Designing a full-sized game for a five-inch screen is all about smart choices,...

https://blast-wiki.win/index.php/Why_Do_Mobile_Games_Feel_Harder_to_Navigate_Than_Desktop%3F

Designing a full-sized game for a five-inch screen is all about smart choices, not just making things smaller. You focus on touch-first controls that feel natural on a small display. You decide if portrait or landscape works better for your game