Используйте приложение APKPure
Историческую версию Control for Agar.io (original) можно получить на Android
This application enables you to play original Agar.io on your phone or tablet.
It adds usable user interface on the top of Agar.io website for control via touchscreen.
Just click on the screen same as you would click with your mouse on PC.
Requirements:
- Internet connection.
- Android 4.4 or higher.
Enjoy original Agario game!