Steam’s “Remote Play Together” feature has entered beta. By streaming video, audio, input, and voice between players, users may play any and all local multiplayer games with Steam Friends online. Gamers have the option of using their own controllers or sharing control of the keyboard and mouse. They can also play together across PC, Mac, and Linux.
Their controllers will act as if they’re plugged directly into your computer, and all your voice chat and game volume options are available in one place. To keep things simple, only the game is displayed to your Friends, never your desktop or other Top Secret stuff. You can share — or limit access to — the keyboard and mouse. It’s your choice.