Kevin Martens on Diablo III: Reaper of Souls

Blizzard has an impeccable track record when it comes to game expansions. But expectation around Diablo III's first expansion, Reaper of Souls, is doubly high following the game's wobbly launch in 2012. To find out how the developer intends to deliver, Matt Maguire catches up with lead designer Kevin Martens in San Francisco.