Sign in and play games
For select games on Google Play, you have the option to sign in and play using your Google+ account. Using your Google+ account, you can play games across platforms and participate in leaderboards, earn in-game achievements, save your in-game progress, and even play others through multiplayer modes on web, mobile, and tablet games.
Sign in to Google Play Games
If a game has enabled Google Play Games features, you can click the Google+ sign in button to play the game using your account. If you use multiple accounts on an Android device, you can choose which Google+ account you'd like to use. Learn more about signing in with Google+.
Information shared with a game developer can only be used by developers in relation to your in-game experience. It cannot be used for any other purposes, including advertising.
When using your Google+ account to sign in, please carefully review the information from your Google account requested from the game, along with the circles with whom you want to share your game activity. Whether you choose to share your scores and achievements publicly, with a select circle of gaming friends on Google+, or just keep them to yourself, you can still use your Google+ account to sign in.
To learn more about the information a game is requesting, select the information icon next to any category. You can also choose which of your circles a game can see and the circles who can view your game activity by selecting the pencil icon during the during the sign in process. By default, your game activity and real name are shared publicly unless you choose to change your settings during sign-in.
Share game activity
When you choose to share your game activity publicly or to a select group of your circles, your gaming activity will only appear on game-related pages and won’t post to your profile stream on Google+ unless you choose to share it.