Valve significantly expands your ability to share free games at home and with your friends using Steam.
One change is the introduction of A Linux version of its Steam Link app, which lets you stream games from a computer to a device with the Steam Link app installed on the same local network. This new Linux version means that you can now connect games from a computer to a Linux-based set-top box, for example connected to a TV. The app is also available on Android, iOS and Raspberry Pi.
Valve has also expanded a major update to its Remote Play Together feature that lets you stream games to your computer via the Internet so you can play them with friends. Just last week, Valve introduced a way for you to play games with friends who do not have a Steam account, but with the feature you can only play with one friend without a Steam account at a time. However, you can now play with as many friends without Steam accounts as you like, depending on how many other players a game supports and the bandwidth of your network.
If you want to try the feature, which is in beta, follow the instructions here.