It looks like Google is making big progress in its Twitch competitor, with YouTube Gaming v1.1 being torn down by Android Police. The outfit found that the latest app includes background and offline playback, and so much more.
With YouTube's background and offline playback still not here, it shows the progress that the team has had with YouTube Gaming, pushing out these two big features into the app virtually instantly. We should hopefully expect the normal YouTube app to feature offline playback and background play in the next few revisions.
Google is including VR support for YouTube Gaming through Cardboard, allowing 360-degree videos to be played through the YouTube Gaming v1.1 app. If you want to download the YouTube Gaming v1.1 APK, you can grab it here.