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

https://shed-wiki.win/index.php/How_to_Explain_Responsive_Design_to_a_Non-Designer_Using_Game_Examples

Designing a full-sized game for a five-inch screen is all about making smart choices, not just shrinking everything down. You focus on touch-first controls that feel natural in a small space