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

https://brookssniceop-ed.bearsfanteamshop.com/mobile-slots-in-browser-vs-app-what-s-the-difference-for-ui

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