A series of video games called Total War is allowing players to control enormous armies of tens of thousands of people in real time combat. Kathryn Ryan speaks with Julien Blarel, who has turned playing the game into a second job. He uploads videos of himself playing the game on his YouTube channel, Invicta, where they've accumulated more than 38 million views. And it's not just gameplay... The game has helped prompt a passion for history, which Julien has channeled into a series of documentaries about ancient history.