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

https://rileysnewcolumn.readspirex.com/posts/my-mobile-browser-game-feels-janky-only-on-safari-what-should-i-check

A mobile browser game can feel just like a native app by supporting portrait mode, so it fits comfortably on your phone screen. It loads quickly thanks to smart caching, reducing wait times