Source: http://www.engadget.com/2015/06/12/youtu...

For awhile, the rumor was that Google would buy Twitch. That didn't happen (Amazon did that instead), but that doesn't mean it's given up on gaming. Today at an event held in YouTube Space LA, the company is taking the wrapper off its very own video game-centric effort called, appropriately enough, YouTube Gaming. It's both an app and a website and is designed to put YouTube's gaming content front and center. More than 25,000 games will have their own dedicated page and each page will feature videos and live streams related to that particular title. 

Aside from those dedicated title pages, you can also subscribe to channels from game publishers and indie YouTube creators. Once you've subscribed to a few channels and pages, YouTube will offer up recommendations based on the stuff you like.