Best Free Co-Op Games On Steam

Co-op has been a staple of gaming for most of the medium’s lifespan, and it is alive and well on Steam. While arguably associated more with PvP games, the PC scene is certainly no stranger to cooperative games, particularly ones that are played online. Local co-op options can be a bit harder to find since the feature is not typically prioritized on platforms like Steam, but they also exist, and there are some great titles out there.

When looking for multiplayer games to play with friends, players will likely gravitate either to team-based shooters or MMOs, two genres that have produced more than their fair share of great releases. However, there are plenty of great Steam co-op games that go beyond those categories.

Updated February 18, 2026, by Mark Sammut: So far, 2026 has not really produced any major free-to-play co-op games, although that might change over the coming months. Consequently, I’ve added two pretty old titles to the list, and they are both top-down shooters. SAS: Zombie Assault 4 and Relic Hunters Zero: Remix have been added.

Quick Picks: Best Free Steam Co-Op Games To Play Right Now

Not Sure What To Play Right Now? Then Try These!

While we will get to the individual games in a moment, let’s first go through a few quick recommendations. If you are just looking for something to play today and don’t want to dive deep into the titles themselves, this section should help direct you to the best place to start across a few different categories/situations.

We Were Here

Steam User Rating: 90%

Following the same thread as innovative puzzle co-op games like Keep Talking And Nobody Explodes, We Were Here sees two players lost in a frozen wasteland and separated. The only form of communication they have is through their handheld radio devices. Both players must have working microphones to communicate as they work together through challenging puzzles to reunite, and they will have a unique gameplay experience.

Seemingly inspired by real-life escape rooms, I was surprised at just how well We Were Here manages to replicate those experiences. The game proved to be a big enough success to produce four sequels, none of which are free. That said, they are all very good and are not that expensive when bought together.

Alien Swarm: Reactive Drop

Steam User Rating: 94%

Alien Swarm might just be Valve’s most forgotten game, although the 2010 release is by no means bad. In fact, anyone seeking a twin-stick co-op shooter can certainly do worse than this title; however, they should consider jumping into Alien Swarm: Reactive Drop instead of the original game. For one, Reactive Drop is still being updated despite coming out in 2017, which cannot be said for Alien Swarm. Secondly and more importantly, the expansion does exactly what it advertises: improve the base experience.

While not lacking PvP, Reactive Drop is primarily about co-op. 8 players can take on one of the game’s 10+ campaigns, each consisting of a couple of missions. Naturally, the gameplay loop boils down to players going up against wave after wave of enemies while they try to work toward a level’s endpoint. Straightforward as this concept is, Alien Swarm: Reactive Drop manages to incorporate quite a bit of nuance through its classes and tactics-driven gameplay. This is not one of those forgiving games that allow players to effectively disregard the rest of the team as they live out their Rambo fantasy; no, teamwork is necessary for survival.

Where Winds Meet

Steam User Rating: 88%

What a timeline we live in that something as impressive as Where Winds Meet would be free-to-play. While it has been out in China for a while, Everstone’s open-world RPG is finally available internationally, and it covers a surprisingly wide net.

If you want to play Where Winds Meet as a single-player experience, you can do so without having to worry too much about interacting with the MMO features. If you are specifically looking to take your campaign online and join up with strangers, you can pick the Online Mode, which is its own thing that has unique dungeons and its own level system. Realistically, you will need to go back and forth between solo and online play, as you cannot do the former’s quests in the latter and vice versa. Finally, if you want to play with your friends, you can use co-op mode, with one person acting as the host while everyone else serves as the guest.

Where Winds Meet goes out of its way to be as accommodating as possible, and it manages to shine in nearly every area. The game is, ultimately, best played with a couple of friends, as this quickens the process of completing story missions (as co-op covers the same ground as Solo Mode).

Wuthering Waves

Steam User Rating: 89%

Wuthering Waves took quite a while to make its Steam debut, but the delay was worth it since the game is nowadays in a much better state. At launch, Kuro’s project garnered a notably mixed response, with the visuals and gameplay being considered decent but nothing too incredible. While the story is still not great, in my opinion, Wuthering Waves arguably offers the best combat in the gacha genre, along with pretty great traversal. Anybody craving a free-to-play open-world action RPG should give this a try, as they have nothing to lose but time.

For its co-op, Wuthering Waves allows up to three players to share a world, with one of them acting as a host. They all control one playable character, and having some allies can be useful for taking out bosses (although the game is not really that difficult). Honestly, Wuthering Waves’ co-op is not much of a selling point, especially since players need to reach Union Level 22 just to unlock it. That is a lot of time to invest for people specifically looking to play with friends.

Rec Room

Steam User Rating: 88%

Rec Room is somewhat of a special case as it is a social platform that lets you create your own games and play them with friends. VR is the best way to jump into this title, but it does not need the technology either; therefore, you can play it with just Steam and a halfway decent PC. People can create rooms to house their games, and they can vary wildly in terms of genre, tone, length, and so on.

Besides the many, many player-created projects, Rec Room also has original games created by the developers, and they are generally fun and also give you a good idea of what can be created on the platform. Stuff like Isle of Lost Skulls, Quest for the Golden Trophy, and The Curse of the Crimson Cauldron are good places to start.

Team Fortress 2

Steam User Rating: 89%

Team Fortress 2 is primarily known for its PvP, which counts as co-op to an extent. If you and your friends are craving a competitive free game, Valve’s ongoing classic is one of the best options ever, and it seems set to continue until the end of time. The player count per team varies from mode to mode, and the highest is 12 members on each side.

Now, if you do not want PvP, Team Fortress 2 has a co-op mode called “Mann vs. Machine,” which comes in two forms. “Mann Up” is paid and requires having a Tour of Duty ticket in your backpack. As you always get rewards for completing missions in this mode, you need to pay to play. Alternatively, there is “Boot Camp,” which is completely free and has effectively the same content, sans rewards. Basically, if you are just looking to play a horde mode with your friends and don’t care about getting any unique weapons, just go with “Boot Camp” and have a blast. If you are specifically craving a weapon, then you will need to drop some cash for “Mann Up.”

“Mann vs. Machine” supports up to 6 players, and they go through wave after wave until they complete a mission and, eventually, a Tour of Duty. You can play as the same characters as in the competitive game, and you use credits to unlock upgrades throughout a run.

Relic Hunters Zero: Remix

Steam User Rating: 92%

A few Relic Hunters games are available, but the only free option on Steam is this remix. A remake of an open-source game, Relic Hunters Zero: Remix is undoubtedly the definitive version, and it is just an all-around solid top-down co-op shooter, as long as you are only looking to play with one more person. You start with two characters and then unlock five more, developing a pretty robust roster of options. The gameplay blends arcade goodness with tactics, making for an accessible but still strategic experience.

Relic Hunters Zero: Remix is a fairly straightforward game that is very much reminiscent of web browser releases from the 2000s, albeit polished and far more ambitious. It also has a sense of humor, and you spend most of the game shooting ducks in the face. Really, what is there not to like?

With You

Steam User Rating: 89%

With You is a wholesome cooperative puzzle-platformer game for two players to enjoy. Together, the couple must collaborate to solve a series of physics and platforming segments through problem-solving, gentle communication, and jumping on each other.

Short and sweet, with its intentionally wonky controls, With You resolves to improve the bonds and intimacy between the two players and (quite literally) bring them closer together. You will probably finish the game pretty quickly, but it is fun while it lasts.

Once Human

Steam User Rating: 74%

While hardly flawless, Once Human, an open-world survival game, is nevertheless an outstanding achievement and well worth a download. An alien infestation driven by human corporations has caused corruption to spread across the land, mutating humans, animals, and objects in the process. Meta-humans are in charge of fighting back against this chaos, all the while trying to learn who exactly is behind this apocalyptic situation.

As Once Human supports solo play, an argument could be made that this type of survival experience benefits from the sense of isolation presented by a single-player run. However, Starry Studio has implemented both PvP multiplayer and co-op. The former is a mixed bag that can be largely ignored if someone does not want to engage with it, even if they opt to play with other players. Conversely, co-op generally results in a superior experience, even if Once Human’s implementation of the feature leaves something to be desired.

Players can set up either a Party, Hive, or Warband, depending on how many friends will be joining the run. While they all have their uses, Hive might be the best option for those who are planning to mostly play together, as it will allow them to effectively run through the campaign as a unit. Once Human can get repetitive at times, an issue that is lessened when a few friends are along for the ride.