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

https://sizedesk.com/what-happens-when-a-full-sized-game-has-to-fit-on-a-five-inch-screen/

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 spaces. Choosing portrait or landscape mode depends on the game’s needs