Best Free to Play Online Co-Op Games on Steam
Check out this fantastic list of free-to-play online co-op games you can enjoy on Steam right now, updated on April 01st 2026. Looking for even more free titles? Explore the complete list of the best free to play online co-op games on Steam.
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1. GeoGuessr Steam Edition
Explore the world with GeoGuessr Steam Edition! Compete against others, climb divisions, and prove your geography skills. Travel to stunning locations, analyze clues, and make your best guess. Quickplay Duels is unlimited Free-to-play, Competitive Duels is subject to payment/subscription. GeoGuessr Steam Edition is a early access, action and pvp game. Released on May 08th 2025 has received 22,864 reviews of which 15,124 were positive and 7,740 were negative resulting in a rating of 6.5 out of 10. The game has hit the top spot as the #1 most played online co-op game, thanks to its 4,611 peak concurrent players over the last day.
6.5
15,124
7,740
4,611
players
2. GrandChase
Grand Chase is a free side-scrolling online action RPG with anime inspired graphics. Enjoy exciting adventures in dungeons and PvP with unique characters. GrandChase is a action, pve and pvp game. Released on July 27th 2021 has received 25,417 reviews of which 16,503 were positive and 8,914 were negative resulting in a rating of 6.4 out of 10. While seeing 1,926 players online at once in the last 24 hours, this game is currently ranked #2 among online co-op games based on player count.
6.4
16,503
8,914
1,926
players
3. Dead Frontier 2
Survival horror MMO. As one of the few survivors of the outbreak, you must scratch a living out of the decaying ruins of society. Scavenge for supplies, improve your skills, and trade with other players. All the while, keeping your eyes peeled for the infected lurking around every corner. Dead Frontier 2 is a multiplayer, survival horror and zombies game. Released on July 15th 2019 has received 26,801 reviews of which 18,844 were positive and 7,957 were negative resulting in a rating of 6.9 out of 10. While seeing 444 players online at once in the last 24 hours, this game is currently ranked #3 among online co-op games based on player count.
6.9
18,844
7,957
444
players
4. Jigsaw Puzzle Dreams
Beautiful Multiplayer Jigsaw Puzzle game where you can design the room you play in! Jigsaw Puzzle Dreams is a puzzle, online co-op and cozy game. Released on December 01st 2021 has received 1,245 reviews of which 1,184 were positive and 61 were negative resulting in a rating of 9.0 out of 10. With 146 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played online co-op games.
9.0
1,184
61
146
players
5. 3on3 FreeStyle: Rebound
3on3 FreeStyle: Rebound allows players to Team up for fast-paced street basketball, dive into single-player Career Mode PVE, and grow your skills with dynamic gameplay and enhanced Lumen-powered visuals. 3on3 FreeStyle: Rebound is a basketball, team-based and pvp game. Released on July 14th 2020 has received 3,864 reviews of which 2,442 were positive and 1,422 were negative resulting in a rating of 6.2 out of 10. With 143 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played online co-op games.
6.2
2,442
1,422
143
players
6. SCP: Containment Breach Multiplayer
Multiplayer survival horror game based on stories from the SCP Foundation. The game is about a facility containing anomalous entities known as SCPs. When a catastrophic containment breach occurs at one of the facilities, it is your main goal to escape the facility. Try to escape with your friends! SCP: Containment Breach Multiplayer is a horror, multiplayer and online co-op game. Released on October 25th 2021 has received 27,978 reviews of which 23,380 were positive and 4,598 were negative resulting in a rating of 8.2 out of 10. With 130 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played online co-op games.
8.2
23,380
4,598
130
players
7. Unsolved Case
A new lead turns up old doubts about an 'Unsolved Case'. A trap, or a copycat killer? In this co-op puzzle game prequel to the award-winning Cryptic Killer series, put on your detective badges as you collaborate and communicate to crack the codes, solve the riddles, and catch the Cryptic Killer. Unsolved Case is a online co-op, puzzle and escape room game. Released on November 24th 2022 has received 6,321 reviews of which 5,538 were positive and 783 were negative resulting in a rating of 8.5 out of 10. The game currently holds the #7 spot among the most played online co-op games.
8.5
5,538
783
57
players
8. Thunder Tier One
Thunder Tier One is a realistic top-down shooter where you join an elite special operations team tasked with stopping a dangerous terrorist organization wreaking havoc across the fictional Eastern European country of Salobia. Thunder Tier One is a online co-op, top-down shooter and tactical game. Released on December 07th 2021 has received 4,735 reviews of which 3,162 were positive and 1,573 were negative resulting in a rating of 6.6 out of 10. The game currently holds the #8 spot among the most played online co-op games.
6.6
3,162
1,573
39
players
9. It Takes Two Friend's Pass
Download Friend's Pass* and play It Takes Two with a friend for free. Just grab a friend who owns the full game, download Friend's Pass for free, and play together! It Takes Two Friend's Pass is a online co-op, co-op and multiplayer game. Released on March 26th 2021 has received 795 reviews of which 703 were positive and 92 were negative resulting in a rating of 8.3 out of 10. The game currently holds the #9 spot among the most played online co-op games.
8.3
703
92
25
players
10. Tank Team
A team based PVP game where groups of up to 8 players must work together to operate a tank! Tank Team is a team-based, online co-op and casual game. Released on April 11th 2024 has received 746 reviews of which 695 were positive and 51 were negative resulting in a rating of 8.7 out of 10. The game currently holds the #10 spot among the most played online co-op games.
8.7
695
51
15
players
More Online Co-Op & Related Games
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