Twitch is a platform dedicated especially and only for gamers, from streaming and watching live gameplays to messaging - it has all of that in one place. It has got two major updates in a row since December last year, bringing a nice new feature and a plethora of under-the-hood optimizations regarding stability and performance. Below are the official release notes from Google Play available for each version.
Introducing Tags, a new way to discover streamers on Twitch!
Use Tags to filter the Browse tab and find new streams. Use Tags to find game genres, or specific stream types, like a "Casual Playthrough."
You'll also see Tags alongside each category or stream anywhere thumbnails appear in the app.