Netflix has quietly been building out a library of more than 70 video games as part of an ambitious new push to become a gaming giant, testing out a cloud gaming service and posting job openings for its first big-budget, blockbuster game. But it's a notoriously tough market to break into, one that many tech and media giants have tried at and failed. The undertaking is just one of a slew of new business lines that the Netflix has been experimenting with, and they're more important than ever as its stock lags behind the megacaps it used to be on par with. This week on Tech Check, we dive into Netflix's new side quest.