How to use Play Games Services on Server Side (back-end)

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:bust_in_silhouette: Asked By Star Frog

GooglePlayServices (client-server model):
Does anyone know how to check my client’s token on my game-server? Is there a module for Godot for this? (I also have to connect my server to “Google Play Games Services” and query the token there, right?)
:thinking:

Three more official links:

Official Google source about the server side (section): Włączanie dostępu po stronie serwera do usług gier Google Play  |  Play Games Services  |  Google for Developers

Source of example code: