So it is about to begin beta testing its streaming service, which will let users beam games from a PC to a Steam client in another room.
Valve's kicking off the beta testing this year, and to be in with a shot of getting picked you need to go and sign up to this group over on the Steam Community.
Full Steam ahead
PS4 unboxed to get lucky
Xbox One pre-orders arrive early
FIFA 14 aims high on next gen
Steam Machines will only be able to play Linux games natively so you'll need to be able to stream your other games from a PC in order to play them on Valve's living room box.
Going on what we've seen so far, it looks like we'll be able to alter the bandwidth and framerate of a stream but there are still plenty of questions about how things like Family Sharing will work with all of this.