Google has invested around $100 million to $200 million in Zynga, the company behind Farmville and Mafia Wars. Zynga have raised half a billion dollars in venture capital over the past year, and it looks like Google’s contribution has confirmed that Zynga’s games will be part of a Google Games service when it’s released in 2011. Google Games will be focused on social games and will enable gamers to track what they’re playing. Zynga are currently rolling in money, with the company having made $350 million this year. That’s 50% of their operating profit. 2011 revenue is expected to reach $1 billion.