Don't have a Steam Link but I am Streaming to a SteamOS machine + Windows 10 Laptop......and with steam link the game must be on steam? add to steam library doesn't work?
You can add just about any game/program as a "Non-Steam Game" to your library and its then available to Stream.
Problem is, as I'm finding, some games don't work as Steam In-Home streaming will often attach to the wrong window, for example a Game Launcher, and you end up with the audio but you just sit there looking at the launcher and nothing else.
Then I find I have to head back to my gaming PC to alt-tab back in game. I'm assuming this is popups or notifications in the background causing the window the game is being streamed in to minimize.
Still its not all bad news. I have Kodi working 99.99% of the time except for an audio pop here and there. Giving the full media centre feeling to my SteamOS box is a nice bonus.
Quite a few Origin games work surprisingly well too. You just have to add the Origin client instead of the game. Then launch Origin via In-Home streaming and then launch the game from Origin as normal. Might need to head back to your gaming PC and alt-tab back in of course. Once its running its great.
Seen some people posting they have even got Star Wars Battlefront working this way
