Designing a full-sized game for a five-inch screen is really about setting...

https://www.bravobookmarks.win/designing-a-full-sized-game-for-a-five-inch-screen-means-focusing-on-what

Designing a full-sized game for a five-inch screen is really about setting clear priorities, not just shrinking everything down. You focus on touch-first controls that feel natural on a small touchscreen