Last Fall, about 32 million people tuned in to watch players compete for millions in prize money in the League of Legends Season 3 World Championship. And it only took an hour for 18,000 people to buy tickets to watch the event live at the Staples Center in LA. Competitive video gaming is attracting a crowd (and could soon be doing bigger business than some professional sports leagues) as viewers gather to watch and learn. From Quartz: Last year, 71 million people watched other people play video games.