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

https://ericksexcellentblog.image-perth.org/why-mobile-ui-design-is-more-about-priorities-than-shrinking

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