Microsoft announced earlier this week that it has sold over 67 million Xbox 360 units since the console launched back in 2005, generating $56 billion revenue for the Redmond-based company. Alongside that number, the company has sold over 19 million Kinect units, and Xbox LIVE now touts over 40 million registered users. Microsoft holds a 47% market share with the Xbox 360, and gamers are averaging 84 hours of playing time every month.