I was searching for a service that could act as a global social service among mobile platforms and thought I would give the Google play services a go. ~ https://www.scirra.com/manual/175/google-play
Turns out it only works for web at the moment anyway so that stopped me in my tracks. However, I also noticed from the manual it only says you need a client id. This isnt true anymore as it seems you also need the "OAuth2 Client Secret" as I understand it, but perhaps I misunderstood. So I assume this plugin no longer works?
As a side note it would be nice if the plugin worked for mobile platforms as well. As it could mean you could use the same service across all platforms (Android, iOS, Windows phone, Blackberry and HTML5.