Designing a full-sized game for a five-inch screen means focusing on priorities...

https://wiki-site.win/index.php/Why_Cramming_More_Buttons_on_Mobile_Makes_Things_Worse

Designing a full-sized game for a five-inch screen means focusing on priorities instead of just shrinking everything down. It’s about making touch-first controls easy to tap and deciding if portrait or landscape works best for gameplay