Remove or at least turn off Game Center

I want to ask when I sold my iphone I forgot to log out the game center ..
when I play clash of clans at the same time sold the iphone users playing the same game ..
I often have to reload another gaming device ..
how to be reset game center from my old iphone so I can play clash of clans in peace without fear of reloading the game?
please help me ..
thank you

I have a game called clash of clans, suddenly I gave my apple id to someone I didnt expect that he will ruin my game. I know it was my fault and im still hoping to save my game I mean the privacy.But before he hacked my apple id account, I already linked my game into my google account so I still have the accessed to my base. The question is, how to totally remove/delete my apple id if he already change everything my email add, security questions, and password. Ugh its hard 😟 I hope someone can help me. I really love my base.

doesn't work

For some users it stops games from working. On the latest iOS8, none of my games work because of GC!

I had some success by going to SETTINGS --> GAME CENTER --> then just sign out...

The notifications - banners that were impossible to turn off stopped appearing.

hope this helps.

I already deleted Game Center from my iPhone... what do I do to get it back?

I agree that we as owners should be able to decide. I really don't care if the intolerant Millenials find it cool fun and neat. It's a waste of my time to have it pop up every time I open a game.

plese delaet my game ce

Game Center was removed wth the update to iOS 10.

The app has been deleted, so the old way of deleting an account isn't possible. So, how do I delete my account through the system in my settings

Settings>Game Center. Tap on your Apple ID, then tap on Sign Out.