A mobile browser game can feel just like a native app by supporting portrait...

https://www.romeo-bookmarks.win/a-mobile-browser-game-can-feel-native-because-it-s-designed-to-work-smoothly-in

A mobile browser game can feel just like a native app by supporting portrait mode for easy one-handed play, using caching to load quickly even on slower connections, and offering touch-friendly controls that respond smoothly