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Switching the Game Center app to English
To switch the GC app to English, perform the following actions:
1) log into GC app with a developer account
2) go to the "Help" section and select "Developer mode" in the drop-down list
3) go to the "Developer mode" section and select "Switch language to English" in the drop-down list
The GC app will automatically reload and the language will switch to English.