Last year Valve introduced the Steam Link app which allows you to stream games from your PC to your smartphone or tablet so long as it was on the same WiFi network. Of course, people will need high upload speeds from their PCs and strong network connections to their Steam Link devices to take advantage, Valve said.
As it is, Steam Link users can stream their PC games over the same network their host machine is connected to, but as the name suggests, Steam Link Anywhere allows them to stream their games to devices on different networks.
Though this extension of capabilities is now limited to the Steam Link device itself, it is expected to eventually roll out to the official Steam Link Android app. I confirmed that I could stream from my gaming PC to my mobile phone using mobile data. After that, follow the simple instructions laid out here to get started.
Just as a reminder, as the Steam Link Anywhere feature is in early beta, it is bound to lag and not work for all the users.
You'll need to update your Steam client to the latest beta build dated 13th March and then add another computer. This was only really useful for those times when you want to play a game on your couch.
The Steam Link app is now better than ever.
Unfortunately, there is still no word on Steam Link availability on iOS, so those who were waiting to enjoy this on an iPad or iPhone are out of luck for now.
Merely days before the Game Developer Conference 2019, Valve has made two announcements. After that, you'll see an "Other Computer" option when searching for devices with Steam Link. If you have an Android device, you can download it here.