Mobile browser games feel native because they load quickly and remember your...

https://lanesniceblog.scriblorax.com/posts/how-do-i-stop-ui-elements-from-sitting-under-the-notch-or-rounded-corners

Mobile browser games feel native because they load quickly and remember your progress using caching, so you’re not stuck waiting. They work smoothly in portrait mode, which fits how you naturally hold your phone