Google has announced a big move on social network world with integrating Web-based games within Google Plus. Google included games like Angry Birds, Bejeweled Blitz, Zynga Poker and Sudoku. Google has launched a new Google Plus Platform Blog to help developers more.
Quote from Google :
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.
Currently Games are not available for everyone, if there is game button on your circle icon you can start and play games. Other wise you need to wait for sometime. Google says the Games roll-out on G+ will be gradual. It starts today for some users.