The final round of the collegiate championship for Heroes of the Storm -- Blizzard's answer to hugely popular MOBA games League of Legends and Dota 2 -- will be broadcast live on ESPN2 on Sunday at 6:30PM PT. That's prime time, baby. This marks the first time that ESPN will air an eSports match on live TV; it hosted the League of Legends finals last year online only, and that stream brought in more viewers than the NBA Finals or the deciding game in the World Series. Also last year, ESPN2 aired a documentary about Dota 2 and ESPN3 hosted an online stream of that game's championships. Professional gaming is a booming business, with the top title, League of Legends, bringing in an estimated $1 billion in 2014 alone.