We’re taking steps to reduce sign-in friction and unnecessary permission requests for players by moving the Games APIs to a new model. The new interaction is:
Players are prompted to sign-in once per account, rather than once per game
Players no longer need their account upgraded to
Google+ to use Play Games services
Once players have signed-in for the first time, they will no longer need to sign in to any future games; they will be automatically signed in
Note: Players can turn off auto-sign-in through the Play Games App’s settings
Advantages:
Once a user signs in for first time, new games will generally be able to sign in without any user interaction
There is no consent screen required for signing in on any particular game. Sign-in will be automatic to each new game.
In order to respect user’s privacy and avoid revealing their real name, we also have to change the way player IDs work.
For existing players: Games will continue to get their Google+ ID (also called “player ID” in previous documentation) when they sign in.
For new players: Games will get a new player ID which is not the same as the previous IDs we’ve used.