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

https://www.bookmark-belt.win/designing-a-full-sized-game-for-a-five-inch-screen-isn-t-about-just-shrinking

Designing a full-sized game for a five-inch screen is all about prioritizing what matters most. Instead of just shrinking everything, you focus on touch-first controls that feel natural in hands. Portrait mode often works better than landscape here