Sony revealed that nearly 800,000 game sessions have been live-streamed from the console itself via Twitch and Ustream, with more than 7.1 million viewers of the broadcasted content totaling around 20 million minutes of live gameplay.Ten percent of all the Twitch content from mid-November on has originated from the PS4, with games such as Battlefield 4, Killzone: Shadow Fall and Call of Duty: Ghos