Just make sure you're running the 'Stretch' version of Pi's OS (which has been default anyway since August 2017) and drop in a few lines ( here). On Monday, Valve's Sam Lantinga announced that the Steam Link app is now available in beta form on the Raspberry Pi 3 and 3 B+. Valve, however, is offering an alternative, and it comes in the form of Raspberry Pi. The Steam Link app continues to live on in mobile devices and smart TVs, so it's not the end of days, but this doesn't offer the same latency-mitigating clout as Ethernet-wired hardware.

The simple black micro PCs designed to let you play games in the living room - or anywhere else in the house away from your gaming rig - is sold out everywhere and it seems Valve has no plans to produce more. Earlier this year, Valve started to shift its focus away from Steam Machines, and now that the Steam Link has been discontinued, Steam's hardware tab only hosts pages for the HTC VIVE – a virtual reality headset which Valve helped produce – and the Steam Controller.Steam Link boxes are no more. We're still not entirely sure why Valve discontinued the Steam Link, but it seems to be part of a larger turn away from hardware in general. Keep in mind that this is only a beta for now, so you might encounter some bugs as you play. The first time you run it, the full app will be installed and a desktop shortcut will be created. Once you've done that, you'll be able to launch the app either from the Games menu or by simply running 'steamlink' from a command line. To install the app, Valve says you need to run the following text from a command line:

More specifically, Steam Link is available on Raspberry Pi 3 and 3B+ systems running Raspbian Stretch.

Steam link raspberry pi 3