The roar inside a packed stadium is felt more than heard, a kind of whole-body buzz. As the announcer on the PA brings the crowd to a crescendo, techno music pumping and lights strafing our heads, distant figures file onto the stage, sit in front of keyboards and PC screens, and fit helicopter-grade headphones over their ears to shut out the sound of 10,000 people chanting their names. Two years ago I traveled to Katowice, Poland, to make a short video documentary about e-sports. IEM 2018 was the biggest yet, with a million-dollar prize pot and around 100,000 fans turning up to cheer on their favorite teams. This year, those teams played in silence.