A good mobile browser game feels native because it’s designed to work smoothly...

https://kilo-wiki.win/index.php/Why_Do_Some_Mobile_Browser_Games_Feel_%E2%80%9CUnfinished%E2%80%9D_Compared_to_Desktop%3F

A good mobile browser game feels native because it’s designed to work smoothly on a phone. It supports portrait mode, so you can play comfortably while holding your device. The game loads quickly thanks to caching, reducing wait times