I'm generally not a huge fan of online games that cut into productivity but
Empire Avenue is a lot of fun. Check it our if you haven't had a chance.
The Social Media Stock Market Game
Empire Avenue is the Social Media Stock Market Game, where you can buy and sell shares in any social media profile, meet new people, unlock Achievement badges, and earn boatloads of virtual cash by being active and social online! Buy shares in your friends, your followers, people with similar interests, brands you love, celebrities ? anyone! All using a virtual currency and all for free!
CLICK HERE TO JOIN FREE