Marathon supports duo play, but not in the way most players mean when they ask for duos. You can queue with one friend, yet that pair is still placed into the regular trio matchmaking environment unless you use crew fill and add a third player.
Quick answer: Yes, you can play Marathon as a duo, but no, there is not currently a dedicated duos playlist that matches two-player teams only against other two-player teams.

Marathon duos matchmaking right now
The current setup is simple. Solo players can enter solo lobbies, and crews can form up to three players. A two-player party is valid, but it does not get its own protected queue.
| Party setup | What happens | What you can expect |
|---|---|---|
| Solo with crew fill off | Solo lobby | You face other solo players |
| Duo with crew fill off | Regular trio matchmaking | You can run into full three-player squads |
| Duo with crew fill on | Team fills to three | You play with one random teammate |
| Full trio | Regular trio matchmaking | You enter as a complete three-player squad |
How to tell if duos exists as a separate mode
The clearest sign is matchmaking behavior. A real duos playlist would keep two-player teams in two-player-only matches. Marathon does not do that right now.
If you and one friend queue without crew fill and still see full squads in your matches, that confirms you are not in a dedicated duos queue. That is the current state of the feature.

What Bungie has acknowledged about duos
Bungie has already recognized feedback around duo-dedicated lobbies during its Server Slam recap. The request has been logged and shared with the team, alongside other gameplay topics like TTK, healing economy, UI, performance, and movement feel.
That matters because it confirms duo-only matchmaking is under consideration. It does not mean a duos playlist is scheduled, and there is no official timeline for when it might be added.
Why players keep asking for a dedicated duos playlist
The main complaint is not that two-player parties are impossible. It is that duo parties are often forced into fights against coordinated trios. In an extraction shooter, that changes both combat and resource pressure. A third player means another gun, another body to hold space, another revive angle, and another inventory.
There is also a social reason. For many players, finding one friend is easy and finding two is not. That makes duos a more natural way to play than full trios, especially for people who do not want to rely on random fill.
Some players also argue that a duo queue could create a different rhythm by increasing the number of teams in a lobby. Others want a softer solution, like prioritizing duos versus duos when possible instead of making a strict, separate playlist.

Why a dedicated duos playlist is not automatic
The case against it is mostly about balance and matchmaking health. Marathon is built around three-player squads, and several players point out that class utility, team ability combos, and general encounter balance feel strongest in trios.
There is also the queue-splitting problem. Adding more playlists can stretch the player population across more matchmaking buckets, which can lead to longer wait times or worse connections in lower-population regions.
That is why the current position is cautious. A duos playlist is being considered, but it is not treated as a guaranteed feature.
Can you still win as a duo in Marathon
Yes. Players have already had successful 2v3 runs, and the game’s low TTK means a well-coordinated pair can still erase a full team quickly. That does not remove the built-in disadvantage, but it does make duo play viable in practice.
The important distinction is viability versus parity. Duo play works. It just is not equalized through a dedicated queue.
What to expect if you queue as a duo now
If you want to play with exactly one friend, you have two real options. You can turn crew fill on and let the game add a third teammate, or you can turn crew fill off and accept trio lobbies as a two-person team.
| Your choice | Tradeoff |
|---|---|
| Use crew fill | You get a full team, but the third player may not match your pace or goals |
| Turn crew fill off | You keep full control of your duo, but you enter matches at a numbers disadvantage |
That is the full decision tree right now. There is no separate playlist you can pick to avoid both compromises.

Is Marathon getting a duos playlist
Possibly, but nothing official is locked in. Bungie has acknowledged the request and is evaluating it. No launch-era confirmation has turned into a firm release window, and no official next date for a dedicated duos playlist is currently confirmed.
If you are waiting specifically for duo-only matchmaking, the right expectation is patience rather than assumption. Marathon already supports playing as two. It does not yet support protected duos matchmaking, and that is the part players are still waiting on.