as of february 2010, the "forza" games have sold over 10 million copies since the release of "forza motorsport" in may 2005. as of december 2016, the series has made over $1 billion usd at retail, making "forza" one of the highest grossing video game franchises. over 14 million unique players were registered in the "forza" community on xbox one and windows 10 by december 2016.