Mobile browser games can feel just like native apps because they load quickly...

https://penelopessmartdigests.talesignal.com/posts/do-casual-browser-games-need-low-latency-like-multiplayer-shooters

Mobile browser games can feel just like native apps because they load quickly and keep playing smoothly, even on slower connections. They work well in portrait mode, so you can play one-handed, and the controls respond naturally to touch