You've probably heard about esports but might not be totally sure what it is. Simply put, it's gamers playing video games live, competitively, and with an audience. It sounds like it might be geeky and niche, but that perception is no longer true. Esports is a rapidly growing genre within sports and gaming and is forecast to be a $1.5 billion industry by 2020. It's even taking over audiences and share from traditional sports; by 2021, esports is slated to be second in popularity to the NFL, ahead of Major League Baseball and the NBA.