Play Games Services. Google play games services for ios is deprecated, and is not likely to function as expected. Games are more fun with the google play games app.
Save your progress and track your achievements as you level up. I have been playing around with the new google play games services lately. See the deprecation announcement blog post.
All games that use google play games services must be registered on the play developer console.
A number of these features and services have been popular among the developer. Games are more fun with the google play games app. I have been playing around with the new google play games services lately. And with instant play, many games require no installation.