A mobile browser game can feel just like a native app because it runs smoothly...

https://oscar-wiki.win/index.php/Why_Does_My_Mobile_UI_Feel_Cramped_Even_After_Scaling_Everything_Down%3F

A mobile browser game can feel just like a native app because it runs smoothly in portrait mode and loads quickly thanks to caching. The touch-friendly controls respond well, making gameplay easy and natural