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

https://www.stealth-bookmark.win/designing-a-full-sized-game-for-a-five-inch-screen-is-about-making-smart-1

Designing a full-sized game for a five-inch screen is all about smart priorities, not just shrinking everything down. You focus on touch-first controls that feel natural in small hands and decide if portrait or landscape works best for the gameplay