A well-built mobile browser game can feel just like a native app by supporting...

https://nova-wiki.win/index.php/Why_Do_Some_Browser_Games_Feel_%22App-Like%22_Even_Without_Installation%3F

A well-built mobile browser game can feel just like a native app by supporting portrait mode for easy one-handed play, loading quickly thanks to smart caching, and offering touch-friendly controls that respond smoothly