Best Co-op games on Steam

Unlike generic lists, our strategy game recommendations use a rigorous analysis of Steam user reviews to identify and feature only the best, community-validated co-op games. For those who prefer not to search, lists of the most played, top deals and best free co-op games are available at the bottom of the page.

Filters & Lists

Ball 2D: Soccer Online

Ball 2D is an online multiplayer soccer game with 100% physics-based gameplay where you control one player.

Price 0.99€
Rating 7.2
Release 08 Sep 2017

Battlestar Galactica Deadlock

In Battlestar Galactica Deadlock™ you’ll take command of the Colonial Fleet in defense of the Twelve Colonies during the First Cylon War. Lead many different types of ships in this 3D tactical game. Every decision counts, your strategy will be vital – can you ensure mankind’s survival?

Price 38.99€
Rating 8.1
Release 31 Aug 2017

X-Morph: Defense

Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle.

Price 19.99€
Rating 8.8
Release 30 Aug 2017

Absolver

Absolver is an online multiplayer combat game where players are placed behind the mask of a Prospect under control of the Guides, the new rulers of the fallen Adal Empire, who will determine your worth in joining their elite corps of Absolvers.

Price -88% 3.53€
Rating 7.1
Release 29 Aug 2017

Fishing Planet

Fishing Planet® is a free-to-play and highly realistic first-person online multiplayer fishing simulator. Developed by avid fishing enthusiasts to bring you the full thrill of actual angling on your PC.

Price Free to play
Rating 8.6
Release 28 Aug 2017

Rock of Ages 2: Bigger & Boulder™

The greatest rock-racing, tower defense, art history game is back! Like the title says, Bigger & Boulder cranks up the surrealism and gameplay with chaotic 4P multiplayer, new time periods, and improved graphics, physics, and destructibility powered by UE4 to be, well… BIGGER AND BOULDER.

Price -80% 2.99€
Rating 8.2
Release 28 Aug 2017

ARK: Survival Evolved

Stranded on the shores of a mysterious island, you must learn to survive. Use your cunning to kill or tame the primeval creatures roaming the land, and encounter other players to survive, dominate... and escape!

Price 14.79€
Rating 8.3
Release 27 Aug 2017

Yet Another Zombie Defense HD

Top-down zombie shooter with tower defense elements featuring up to 4 players local and online co-op. Build your base by day, defend it by night, put your skills to the test to stay alive as long as possible! Darkness is coming. How long can YOU survive?

Price 3.99€
Rating 8.1
Release 25 Aug 2017

Comedy Night

Tell jokes, sing songs, make friends or heckle. Comedy Night captures the fun experience of a real comedy club.

Price 4.99€
Rating 7.3
Release 24 Aug 2017

Distrust: Polar Survival

DISTRUST is an isometric survival adventure with procedural generation on an Arctic research station lost in the endless dark of a polar night. A story-rich fiction with multiple endings that suits both singleplayer fans and co-op enthusiasts.

Price -90% 1.27€
Rating 7.0
Release 23 Aug 2017

The Escapists 2

Craft, Steal, Brawl and Escape! It’s time to bust out of the toughest prisons in the world as you return to the life of an inmate in The Escapists 2, now with multiplayer! Have you got what it takes to escape?

Price -85% 2.95€
Rating 8.9
Release 21 Aug 2017

Head Goal: Soccer Online

Play with your friends an online multiplayer soccer game with 100% physics-based gameplay where you control one player.

Price 0.99€
Rating 7.5
Release 18 Aug 2017

Castle Story

Castle Story is a creative voxel-based strategy game in which you can build castles one brick at a time using an army of little creatures called Bricktrons. Design and build your own castles, expand your territory in a vast landscape and defend your Bricktrons against onslaughts of hostile creatures.

Price 9.75€
Rating 6.3
Release 17 Aug 2017

20XX

20XX is a roguelike action platformer that you can play with a friend. Jump and shoot your way through ever-changing levels, collect awesome new powers, and battle mighty bosses in the name of saving the human race maybe!

Price 14.99€
Rating 8.8
Release 16 Aug 2017

Looterkings

Looterkings is a procedural dungeon-crawler you can play online in coop-mode with up to 3 of your friends. Loot as much as you can on your way up from the dark caves beneath earth to the surface, gear up and reach your ultimate goal ravaging the hallowed halls of the Elven Queen, eventually.

Price -90% 1.73€
Rating 6.9
Release 11 Aug 2017

Sine Mora EX

Sine Mora EX is a side-scrolling shoot'em up that provides a unique challenge, where time is the ultimate factor. Mixing classic shooter sensibilities with contemporary presentation, Sine Mora EX is a gorgeous shoot'em up offering both a Story Mode that weaves an excessive tale and an Arcade Mode.

Price -87% 2.98€
Rating 6.4
Release 08 Aug 2017

Party Panic

Party Panic is an online and local-multiplayer party game. Compete against your friends in the all new board game, play 30+ rapid fire minigames, race through the brutal Gauntlet, or complete the challenges on Trophy Island. There is even a built in drinking game! You'll laugh, you'll cry, it's stupid.

Price 13.99€
Rating 7.3
Release 07 Aug 2017

MINDNIGHT

Inspired by the party games Werewolf and The Resistance, MINDNIGHT is a cyberpunk online social deduction game of deceit, accusations and unpredictability. It challenges your ability to lie and detect others that are trying to be deceptive.

Price Free to play
Rating 8.2
Release 04 Aug 2017

Arcade Mayhem Juanito

Arcade Mayhem Juanito is a retro experience about arcade-hopping. Teleport into different video games, play with unique mechanics inspired by well-known arcade games, face stunningly animated bosses and join the fight against the clonocell invasion.

Price 9.99€
Rating 8.6
Release 03 Aug 2017

Redeemer: Enhanced Edition

REDEEMER is a intense Brawler where you will punch, hack and blast your way through enemies using fists, hammers, fire arms and even the environment.

Price 9.99€
Rating 8.4
Release 01 Aug 2017

The Long Dark

THE LONG DARK is a thoughtful, exploration-survival experience that challenges solo players to think for themselves as they explore an expansive frozen wilderness in the aftermath of a geomagnetic disaster. There are no zombies -- only you, the cold, and all the threats Mother Nature can muster.

Price -90% 2.99€
Rating 9.0
Release 01 Aug 2017

Car Mechanic Simulator 2018

Build and expand your repair service empire in this incredibly detailed and highly realistic simulation game, where attention to car detail is astonishing. Find classic, unique cars in the new Barn Find module and Junkyard module. You can even add your self-made car in the Car Editor.

Price -91% 1.82€
Rating 9.0
Release 28 Jul 2017

Business Tour - Board Game with Online Multiplayer

"Business Tour" is a free to play multiplayer tabletop game. Build your monopoly with friends. Complete daily tasks, compete against the other players and receive trade items rewards!

Price Free to play
Rating 6.0
Release 27 Jul 2017

Crossout

Crossout - the postapocalyptic MMO action game where you can create a unique design for an armoured vehicle from dozens of parts and then drive it into multiplayer battles raging on land and in the skies alike.

Price Free to play
Rating 7.4
Release 26 Jul 2017

Most played co-op games on Steam

Take a look at the top co-op games that are currently attracting the largest player bases on the Steam platform, as of April 30th 2025.

1. Schedule I

From small-time dope pusher to kingpin - manufacture and distribute a range of drugs throughout the grungy city of Hyland Point. Expand your empire with properties, businesses, employees and more. Schedule I is a simulation, co-op and crime game developed and published by TVGS. Released on March 24th 2025 has received 145,504 reviews of which 143,373 were positive and 2,131 were negative resulting in an impressive rating of 9.7 out of 10. The game has hit the top spot as the #1 most played co-op game, thanks to its 86,891 peak concurrent players over the last day.
9.7
143,373
2,131

86,891
players

2. R.E.P.O.

An online co-op horror game with up to 6 players. Locate valuable, fully physics-based objects and handle them with care as you retrieve and extract to satisfy your creator's desires. R.E.P.O. is a horror, online co-op and comedy game developed and published by semiwork. Released on February 26th 2025 has received 141,665 reviews of which 136,708 were positive and 4,957 were negative resulting in an impressive rating of 9.5 out of 10. While seeing 56,367 players online at once in the last 24 hours, this game is currently ranked #2 among co-op games based on player count.
9.5
136,708
4,957

56,367
players

3. Dead by Daylight

Trapped forever in a realm of eldritch evil where even death is not an escape, four determined Survivors face a bloodthirsty Killer in a vicious game of nerve and wits. Pick a side and step into a world of tension and terror with horror gaming's best asymmetrical multiplayer. Dead by Daylight is a horror, multiplayer and survival horror game developed and published by Behaviour Interactive Inc.. Released on June 14th 2016 has received 790,041 reviews of which 624,264 were positive and 165,777 were negative resulting in a rating of 7.9 out of 10. While seeing 28,299 players online at once in the last 24 hours, this game is currently ranked #3 among co-op games based on player count.
7.9
624,264
165,777

28,299
players

4. Left 4 Dead 2

Set in the zombie apocalypse, Left 4 Dead 2 (L4D2) is the highly anticipated sequel to the award-winning Left 4 Dead, the #1 co-op game of 2008. This co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns. Left 4 Dead 2 is a zombies, co-op and fps game developed and published by Valve. Released on November 16th 2009 has received 955,598 reviews of which 932,058 were positive and 23,540 were negative resulting in an impressive rating of 9.7 out of 10. With 17,964 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played co-op games.
9.7
932,058
23,540

17,964
players

5. Phasmophobia

Phasmophobia is a 4 player online co-op psychological horror. Paranormal activity is on the rise and it’s up to you and your team to use all the ghost-hunting equipment at your disposal in order to gather as much evidence as you can. Phasmophobia is a horror, online co-op and multiplayer game developed and published by Kinetic Games. Released on September 18th 2020 has received 764,580 reviews of which 732,704 were positive and 31,876 were negative resulting in an impressive rating of 9.5 out of 10. With 10,655 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played co-op games.
9.5
732,704
31,876

10,655
players

6. PAYDAY 2

PAYDAY 2 is an action-packed, four-player co-op shooter that once again lets gamers don the masks of the original PAYDAY crew - Dallas, Hoxton, Wolf and Chains - as they descend on Washington DC for an epic crime spree. PAYDAY 2 is a co-op, action and fps game developed by OVERKILL - a Starbreeze Studio. and published by Starbreeze Publishing AB. Released on August 13th 2013 has received 662,726 reviews of which 593,971 were positive and 68,755 were negative resulting in a rating of 8.9 out of 10. With 8,920 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played co-op games.
8.9
593,971
68,755

8,920
players

7. Don't Starve Together

Fight, Farm, Build and Explore Together in the standalone multiplayer expansion to the uncompromising wilderness survival game, Don't Starve. Don't Starve Together is a survival, open world survival craft and multiplayer game developed and published by Klei Entertainment. Released on April 21st 2016 has received 495,991 reviews of which 472,630 were positive and 23,361 were negative resulting in an impressive rating of 9.4 out of 10. With 8,803 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played co-op games.
9.4
472,630
23,361

8,803
players

8. Monster Hunter: World

Welcome to a new world! In Monster Hunter: World, the latest installment in the series, you can enjoy the ultimate hunting experience, using everything at your disposal to hunt monsters in a new world teeming with surprises and excitement. Monster Hunter: World is a co-op, multiplayer and action game developed and published by CAPCOM Co. and Ltd.. Released on August 08th 2018 has received 490,118 reviews of which 431,253 were positive and 58,865 were negative resulting in a rating of 8.7 out of 10. With 7,279 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played co-op games.
8.7
431,253
58,865

7,279
players

9. Warhammer 40,000: Space Marine 2

Embody the superhuman skill and brutality of a Space Marine. Unleash deadly abilities and devastating weaponry to obliterate the relentless Tyranid swarms. Defend the Imperium in spectacular third-person action in solo or multiplayer modes. Warhammer 40,000: Space Marine 2 is a warhammer 40k, action and multiplayer game developed by Saber Interactive and published by Focus Entertainment. Released on September 09th 2024 has received 158,929 reviews of which 131,518 were positive and 27,411 were negative resulting in a rating of 8.2 out of 10. With 6,956 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played co-op games.
8.2
131,518
27,411

6,956
players

10. Sons Of The Forest

Sent to find a missing billionaire on a remote island, you find yourself in a cannibal-infested hellscape. Craft, build, and struggle to survive, alone or with friends, in this terrifying new open-world survival horror simulator. Sons Of The Forest is a survival, open world and multiplayer game developed by Endnight Games Ltd and published by Newnight . Released on February 22nd 2024 has received 250,834 reviews of which 220,004 were positive and 30,830 were negative resulting in a rating of 8.7 out of 10. With 5,388 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played co-op games.
8.7
220,004
30,830

5,388
players

Best deals on co-op games on Steam

Discover fantastic savings with the best discounts on a variety of co-op games available on Steam right now, updated on April 30th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted co-op games.

1. The Ascent

The Ascent is a solo and co-op Action-shooter RPG set in a cyberpunk world. The mega corporation that owns you and everyone, The Ascent Group, has just collapsed. Can you survive without it? The Ascent is a top-down shooter, cyberpunk and rpg game developed by Neon Giant and published by Curve Games. Released on July 29th 2021 has received 22,742 reviews of which 16,844 were positive and 5,898 were negative resulting in a rating of 7.3 out of 10. Featuring a massive 97% discount, this game currently holds the #1 spot in the best deals for co-op category.
7.3
16,844
5,898

-97% 34.00€ 1.02€

2. Kitaria Fables

Action Adventure fused with RPG and Farming elements. Armed with sword, bow and spellbook, fight against a rising darkness threatening the world. Plunder dungeons in search of relics and resources, tend to your farm to make provisions and potions, and take on quests solo, or with a friend! Kitaria Fables is a co-op, action rpg and farming sim game developed by Twin Hearts and Secret Level Studios and published by PQube. Released on September 01st 2021 has received 1,499 reviews of which 1,081 were positive and 418 were negative resulting in a rating of 7.0 out of 10. Thanks to its incredible 95% discount, this game is now the #2 best deal in co-op games.
7.0
1,081
418

-95% 20.40€ 1.02€

3. This Means Warp

It’s co-op space survival fun, Jim, but not as we know it. This Means Warp is an intense spaceship management roguelite experience for 1-4 players. Explore a procedurally generated universe, upgrade your ship, battle dangerous enemies and adapt your strategies to survive in a hostile galaxy. This Means Warp is a survival, online co-op and space game developed by Outlier and published by Jagex Ltd. Released on May 04th 2023 has received 619 reviews of which 445 were positive and 174 were negative resulting in a rating of 6.9 out of 10. Thanks to its incredible 95% discount, this game is now the #3 best deal in co-op games.
6.9
445
174

-95% 20.00€ 1.00€

4. Degrees of Separation

Degrees of Separation is a puzzle platformer where cooperation is built into every move. Two contrasting souls, Ember and Rime, fall in love, but are separated by an enigmatic force, and must use their powers to progress through a spectacular world of fantasy and adventure. Degrees of Separation is a local co-op, puzzle-platformer and 2d platformer game developed by Moondrop and published by Maximum Entertainment. Released on February 13th 2019 has received 1,092 reviews of which 895 were positive and 197 were negative resulting in a rating of 7.8 out of 10. Currently offered at a significant 94% discount, this title has earned the #4 position in the best deals for co-op games.
7.8
895
197

-94% 20.00€ 1.20€

5. Trine 4: The Nightmare Prince

The best-selling Trine series returns to the magic of 2.5D! Join three iconic heroes as they set off on a quest through fantastical fairytale landscapes to save the world from the Nightmare Prince’s shadows. Trine 4: The Nightmare Prince is a puzzle-platformer, local co-op and online co-op game developed and published by Frozenbyte. Released on October 08th 2019 has received 13,256 reviews of which 11,828 were positive and 1,428 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 93% discount, this title has earned the #5 position in the best deals for co-op games.
8.7
11,828
1,428

-93% 28.14€ 1.97€

6. Borderlands: The Pre-Sequel

Launch into the Borderlands universe and shoot ‘n’ loot your way through a brand new adventure that rockets you onto Pandora’s moon in Borderlands: The Pre-Sequel! Borderlands: The Pre-Sequel is a looter shooter, co-op and fps game developed by 2K Australia, Gearbox Software and Aspyr (Linux) and published by Aspyr (Linux) and 2K. Released on October 16th 2014 has received 41,307 reviews of which 33,563 were positive and 7,744 were negative resulting in a rating of 8 out of 10. Currently offered at a significant 93% discount, this title has earned the #6 position in the best deals for co-op games.
8
33,563
7,744

-93% 42.00€ 2.94€

7. Shift Happens

Shift Happens is a cooperative platformer for two. You and a friend shift your mass, throw each other and puzzle your way through four stages of stylized imaginary worlds. Including the occasional backstabbing and taunting. Play with a friend on a couch, online or even special singleplayer levels. Shift Happens is a co-op, online co-op and local co-op game developed by Klonk Games and published by Daedalic Entertainment. Released on February 22nd 2017 has received 4,002 reviews of which 3,164 were positive and 838 were negative resulting in a rating of 7.7 out of 10. Currently offered at a significant 93% discount, this title has earned the #7 position in the best deals for co-op games.
7.7
3,164
838

-93% 15.29€ 1.07€

8. F.E.A.R. 3

F.E.A.R. 3 delivers all the hallmarks that define the F.E.A.R. brand: terrifying paranormal experience, frenetic combat and a dramatic storyline. F.E.A.R. 3 is a fps, horror and co-op game developed by Day 1 Studios and published by Warner Bros. Interactive Entertainment. Released on June 21st 2011 has received 12,665 reviews of which 9,019 were positive and 3,646 were negative resulting in a rating of 7 out of 10. Currently offered at a significant 93% discount, this title has earned the #8 position in the best deals for co-op games.
7
9,019
3,646

-93% 19.71€ 1.38€

9. From Space

From Space is a solo and co-op action-shooter for squads up to four players. Take on the challenge of liberating the earth from an alien infestation with your friends, using over-the-top weaponry in a post-apocalyptic world with awesomely stylized graphics. The apocalypse has never been so much fun! From Space is a action, co-op and online co-op game developed by Triangle Studios and published by Curve Games. Released on November 03rd 2022 has received 1,876 reviews of which 1,271 were positive and 605 were negative resulting in a rating of 6.6 out of 10. Currently offered at a significant 93% discount, this title has earned the #9 position in the best deals for co-op games.
6.6
1,271
605

-93% 14.29€ 1.00€

10. Orcs Must Die! 2

You’ve tossed, burned and sliced them by the thousands – now orcs must die more than ever before! Grab a friend and slay orcs in untold numbers in this sequel to the 2011 AIAS Strategy Game of the Year from Robot Entertainment. Orcs Must Die! 2 is a tower defense, co-op and action game developed and published by Robot Entertainment. Released on July 30th 2012 has received 19,251 reviews of which 17,894 were positive and 1,357 were negative resulting in an impressive rating of 9.1 out of 10. Currently offered at a significant 92% discount, this title has earned the #10 position in the best deals for co-op games.
9.1
17,894
1,357

-92% 12.50€ 1.00€

Free co-op games on Steam

Check out this fantastic list of free-to-play co-op games you can enjoy on Steam right now, updated on April 30th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play co-op games.

1. World of Warships

Immerse yourself in thrilling naval battles and assemble an armada of over 600 ships from the first half of the 20th century — from stealthy destroyers to gigantic battleships. Change the look of your ship, choose upgrades to suit your play style, and go into battle with other players! World of Warships is a free to play, naval combat and action game developed and published by Wargaming Group Limited. Released on November 15th 2017 has received 146,077 reviews of which 112,696 were positive and 33,381 were negative resulting in a rating of 7.6 out of 10. With 3,513 active players enjoying it for free, this strategy game has reached the #1 spot among the top free co-op games on Steam.
7.6
112,696
33,381

3,513
players

2. SCP: Secret Laboratory

Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape. SCP: Secret Laboratory is a free to play, multiplayer and horror game developed and published by Northwood Studios. Released on December 29th 2017 has received 212,134 reviews of which 194,042 were positive and 18,092 were negative resulting in an impressive rating of 9.0 out of 10. Thanks to its free to play tag and a daily player base of 2,310, this co-op game has secured the #2 spot in the ranking of free co-op games on Steam.
9.0
194,042
18,092

2,310
players

3. One-armed robber

One-armed robber is a chaotic first-person heist game that centers around a uniquely challenging premise. Players take the role of a determined robber equipped with only one arm, tasked with pulling off daring heists on banks, shops, and various establishments. One-armed robber is a free to play, multiplayer and heist game developed and published by Duhndal. Released on December 15th 2023 has received 37,407 reviews of which 34,213 were positive and 3,194 were negative resulting in a rating of 9.0 out of 10. Thanks to its free to play tag and a daily player base of 512, this co-op game has secured the #3 spot in the ranking of free co-op games on Steam.
9.0
34,213
3,194

512
players

4. Caliber

Caliber is a team-based online shooter focused on special forces units from all over the world. More than 70 operators with unique abilities and weapons as well as various game modes and maps are waiting for you. Caliber is a multiplayer, free to play and combat game developed by 1C Game Studios and published by FOR-GAMES CR LTD. Released on April 12th 2023 has received 20,360 reviews of which 15,552 were positive and 4,808 were negative resulting in a rating of 7.5 out of 10. Attracting a solid base of 336 players due to its free access, this strategy game has achieved the #4 position in the best free co-op games on Steam.
7.5
15,552
4,808

336
players

5. MultiVersus

MultiVersus is a free-to-play platform fighter that brings the depth of iconic WB stars to life across the nearly endless possibilities of play. MultiVersus is a multiplayer, 2d fighter and co-op game developed by Player First Games and published by Warner Bros. Games. Released on July 19th 2022 has received 118,015 reviews of which 90,326 were positive and 27,689 were negative resulting in a rating of 7.6 out of 10. Attracting a solid base of 327 players due to its free access, this strategy game has achieved the #5 position in the best free co-op games on Steam.
7.6
90,326
27,689

327
players

6. Sven Co-op

Sven Co-op is a co-operative game originally based around Valve Software's Half-Life. In this game players must work together against computer controlled enemies and solve puzzles as a team. Sven Co-op is a co-op, fps and online co-op game developed and published by Sven Co-op team. Released on January 22nd 2016 has received 31,225 reviews of which 29,228 were positive and 1,997 were negative resulting in an impressive rating of 9.2 out of 10. Attracting a solid base of 168 players due to its free access, this strategy game has achieved the #6 position in the best free co-op games on Steam.
9.2
29,228
1,997

168
players

7. One-armed cook

One-armed cook is a chaotic co-op cooking game for up to 4 people. Work as a team or cook on your own, set your own pace, and don't let the stress of a full restaurant catch up to you. The goofy physics-based aspect of the game gives this cooking game a new twist. One-armed cook is a multiplayer, free to play and co-op game developed and published by Duhndal. Released on August 30th 2022 has received 27,911 reviews of which 25,726 were positive and 2,185 were negative resulting in an impressive rating of 9.0 out of 10. Attracting a solid base of 163 players due to its free access, this strategy game has achieved the #7 position in the best free co-op games on Steam.
9.0
25,726
2,185

163
players

8. We Were Here

Lost in a frozen wasteland and split up from your partner inside an abandoned castle, the only possession you have left is a walkie-talkie with a familiar voice on the other end. Can the two of you find your way out in time? We Were Here is a free to play, co-op and escape room game developed and published by Total Mayhem Games. Released on February 03rd 2017 has received 29,725 reviews of which 26,809 were positive and 2,916 were negative resulting in a rating of 8.8 out of 10. Attracting a solid base of 133 players due to its free access, this strategy game has achieved the #8 position in the best free co-op games on Steam.
8.8
26,809
2,916

133
players

9. E.T.E

The 3D anime-style shooting game "E.T.E" is launching early access soon. It offers three unique environments—sea, land, and air—plus a system for developing female characters and mechas. Famous voice actresses like Sakura Tange, Kana Hanazawa, Rie Tanaka, and Mikako Komatsu voice the characters. E.T.E is a free to play, co-op and strategy game developed by E.T.E studio and published by Exotech Game. Released on April 14th 2025 has received 701 reviews of which 481 were positive and 220 were negative resulting in a rating of 6.6 out of 10. The game currently holds the #9 spot among the most played free co-op games on Steam.
6.6
481
220

77
players

10. Alien Swarm: Reactive Drop

Co-operative top-down shooter game available for free. An epic bug hunt featuring a unique blend of co-op play and squad-level tactics. Alien Swarm: Reactive Drop is a twin stick shooter, pve and top-down shooter game developed and published by Reactive Drop Team. Released on April 20th 2017 has received 22,524 reviews of which 21,381 were positive and 1,143 were negative resulting in an impressive rating of 9.3 out of 10. The game currently holds the #10 spot among the most played free co-op games on Steam.
9.3
21,381
1,143

60
players