Games have arrived in Google+, and it seems they’ve done it right. They’re well integrated, but won’t interrupt your stream (yay!).
When you’re ready to play, the Games page is waiting—click the games button at the top of your stream. You can see the latest game updates from your circles, browse the invites you’ve received and check out games that people you know have played recently. The Games page is also where your game accomplishments will appear. So you can comfortably share your latest high score—your circles will only see the updates when they’re interested in playing games too.
You can read more on the Official Google Blog. What do you think about their implementation?