Remote Play Together, explained

How it works

The host runs the game on their own machine. Steam captures the video and sends it to the other players, whose controller and keyboard input is sent back. To the game itself, everyone appears to be sitting at the host's computer pressing buttons on locally connected controllers.

That's the whole trick, and it's why ownership doesn't matter for the guests: the game only ever runs in one place, on one licence.

Starting a session

1. 1The host launches a game that supports Remote Play Together.
2. 2Open the Steam overlay with Shift+Tab.
3. 3Find the friend you want in the list, click them, and choose Remote Play Together.
4. 4They accept, and join as an additional local player.
5. 5Repeat for each additional player.

Guests don't need to own or install the game. They do need Steam installed, and almost always a controller.

What it's genuinely good at

• Couch co-op and party games — exactly the catalogue it was built to unlock.
• Fighting games and platformers with a forgiving pace.
• Games where one person is driving and the others are reacting, rather than everyone needing frame-perfect timing.
• Trying a game with a friend before either of you commits to buying it.

Where it falls down

It's a video stream, so it inherits every limitation of one.

• The host's upload bandwidth sets the ceiling for everyone. A weak connection degrades the experience for every guest at once.
• Input latency is real. Anything demanding precise timing — twitch shooters, rhythm games, hard platformers — will feel worse than playing locally.
• Guests see a compressed video feed, so fine detail and small text can be hard to read.
• Typically up to four players, though some games support more.

Remote Play Together vs Family Sharing

These solve different problems and people mix them up constantly.

Remote Play Together streams one running copy of a game to several people. Nobody else needs to own it, everyone plays at the same time, and it only works for games with local multiplayer.

Steam Families shares your actual library with up to five other household members, who download and run the games themselves. It works for single-player games, it doesn't need anyone to be online simultaneously, and the games run natively rather than as a stream.

The catch on the Families side is licences. Members can play different games from the shared library at the same time, but two people can't play the same game simultaneously on one copy — that still needs a second purchase. So Family Sharing doesn't solve “we all want to play this together” the way Remote Play Together does.

One consequence worth knowing: Steam's public API only reports games an account actually owns. Titles you can reach through Family Sharing are invisible to library-comparison tools, including this one.

Finding games that support it

Support is a per-game flag, not something you can force on. Steam lists it in the store page's feature list, and it's genuinely widespread among local multiplayer titles — including many that never advertised it.