A mobile browser game can feel just like an app when it loads quickly using...

https://reidyxab469.iamarrows.com/how-do-i-load-only-the-essentials-first-in-a-browser-game

A mobile browser game can feel just like an app when it loads quickly using caching, plays smoothly without lag, and works well in portrait mode. Touch-friendly controls make it easy to play on phones, and consistent performance means fewer interruptions