Won&#x27;t speak for anyone else, but it&#x27;s basically a small, affordable media extender.  I can mirror my phone or a Chrome tab on my computer.  I can use my phone as a remote to stream Netflix&#x2F;HBO&#x2F;etc or using the Plex app to control my Plex server and stream from my local network.  A few other basic uses like mirroring output from my security cams or other media sources but that still falls under the &quot;media extender&quot; umbrella.  There are a handful of games (think more like Monopoly than CoD) you can play with other people where your phones are the controllers and the TV is the main display.<p>I dunno, for $35 it&#x27;s more just a sweet spot for what it does than something groundbreaking.  I also have one of the audio-only versions and it&#x27;s nice for turning any old shelf system or set of powered PC speakers into wireless speakers in your house.  Once they add streaming to multiple Chromecast Audios at the same time, I&#x27;ll probably get a few more to use as an affordable alternative to a Sonos setup.