I can create for you professional backend system using PHP and MySql.
Services I offer:
Custom Authentication -> I can make custom login/registration system where user will be able to login/register using their email and password (or any value you want).
Custom Leader Board -> I can make online Leader Board according to your desire. If you want monthly, yearly, weekly separated leader board, it is also possible. And you will have full control unlike google play games leader board.
Cloud Save -> Here You will be able to manipulate players data from the server.
Update checking system -> If you send a new update, you can either force the user to update or send them a reminder when they open the game
Internet Data available check -> I can truly check if user is actually connected to internet/server.
Server Verified Transaction -> I can make transaction on the server which will make buying items impossible to hack.
User Banning System -> I can make banning system where you can ban any user from the server. It will make user unable to play the game and the game will show a message that they are banned from the game (like clash of clans or other)
High services and i would recommend him, client always satisfied
Task delivery on time, great work and very professional, i will recommend strongly this seller.
Great seller, i like our collaboration and always doing task according to your need.
Coming soon for another service: )
Great job task always delivery on time also, always ready to help client satisfy
Great job! Your timely responses and high-quality work on the ios & android game project are much appreciated. Keep it up! Would recommend this seller to others.