v1 Setup (End of Support Scheduled)
- This feature has been deprecated by Google and will only be available until 2025.
- Configure settings to use Google account.
Register Google User OAuth Client ID (Android)
- Go to Google Cloud Platform > Credentials > Create Credentials > Select OAuth Client ID.
- Select the application type as Web application, enter other information, and complete.
- Check the Client ID information of the added OAuth Client ID.


Register Google User OAuth Client ID (iOS)
- Go to Google Cloud Platform > Credentials > Create Credentials > Select OAuth Client ID.
- Select the application type as iOS, enter other information, and complete.
- Select the added OAuth Client ID and download the PLIST information.
- Rename the downloaded PLIST file to GoogleService-Info.plist.

Register Google Games SDK
- Download the Google Games Unity Package.
- Import the Google Games Unity Package into your project.
- Google Games is required for iOS, and optional for Android.
Download Google Games Unity Package
Register Google Auth SDK
- Download the Google Auth Unity Package.
- Import the Google Auth Unity Package into your project.
- Remove some files to prevent conflicts and errors when importing the Google Auth Unity Package.
Download Google Auth Unity Package

xCode Setup (iOS)
- Run the xCode project as a CocoaPods project.
- Add the GoogleService-Info.plist downloaded from Google Cloud Platform to the project.

- Change the version information of GoogleSignIn in CocoaPods. Some versions may conflict with the Google Auth SDK.
- After changing the pod information, run pod install to complete the installation of the service.

- Register the iOS URL Scheme information from Google Cloud Platform in URLType's URL Schemes.
- The URL Schemes information is the REVERSED_CLIENT_ID value in GameService-Info.plist.
