New answers tagged game-center
The Gamecenter tokens are saved in your keychain. Open it in search for it (Game). It will list all accounts you have. com.apple.account.AppleID.appleid-token-gamecenter
If you have two Game Center accounts then you probably also have two different Apple-IDs. For example, if you want to login with Game Center account "k8conne" on your iPad you need to login with the Apple-ID/e-mail address associated with that Game Center account. And similar with the "kates2003" account on your iPhone. My guess from the information provided ...
Your game center account is the same as your iCloud account. If you want to change game center account, you have to switch iCloud account
In Yosemite 10.10.3 the gamed process can be found in /System/Library/PrivateFrameworks/GameCenterFoundation.framework/Versions/A/gamed. I needed to rename the process to get rid of it, the defaults write and unload suggestions didn't work.
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