Meanwhile, Facebook also stays in the equation, since players will connect to FarmVille on MSN Games using Facebook Connect.

FORBES: Zynga's FarmVille Expands Beyond Facebook to MSN-ier Pastures

In May this year 26.8 million people visited the site, with Facebook leap-frogging MSN to become the UK's second most visited site.

BBC: Is Facebook still making friends?

For instance, last month, the company pulled FarmVille off the portal MSN Games, a sign that the game was not performing well on a non-Facebook platform.

FORBES: More Than One In Ten Facebook Users Played Zynga's Social Games On Sunday