When playing casino games on your phone, you want everything to load fast and...

https://golf-wiki.win/index.php/Why_Mobile_Players_Care_More_About_Speed_Than_Fancy_Graphics

When playing casino games on your phone, you want everything to load fast and menus that are easy to use without getting stuck. A mobile-first design means the app or site fits your screen perfectly and works well with taps and swipes