Google Play Games Services overview

Google Play Service Analysis (3) – Can Google Play Game Service grow with the support of Google+? – Antonio Hong's Story

Google announces Play game services, Android's cross-platform answer to Game Center - The Verge

Google Play - Wikiwand

How to get to Google Play Multi-Player Games section with my game? - Stack Overflow

android - Google Game Services OAuth key for production - Stack Overflow

Settings · Easy Mobile User Guide

Test and publish your game, Play Games Services

Android Developers Blog: New Demographic Stats in Google Play Games Services

Google Play Games FAQ, Android game development

Google Play Services implementation - Unity game

2021] Google Play Game Services #0 - Making it work

Integrate Play Games Services with existing identity solution, Android game development