Set up external identity providers
This section explains step-by-step how to set up a sign-in in your game to authenticate players for specific platforms, including Google Play Games, Apple, Apple Game Center, Facebook, Steam, and OpenID Connect.
Note: While you can implement more than one platform sign-in in your game from different platforms, you can only have one sign-in per platform. For example, if you have a Facebook account and a Google Play Games account, you're able to link the same Player ID with both accounts. However, if you have two different Facebook accounts, you can only link your Player ID with one of these Facebook accounts.
Note: The integration exists only to link a third-party IdP credential with a UGS Player ID, and you're still expected to build the IdP integration yourself.
See the guides for these supported external identity providers: