Hidden Gem Co-op Games Free

Highly rated Co-op games on Steam that are free to play, capped at 25,000 reviews. The cap filters out everything you've already heard of.

By price

Our score adjusts Steam's raw rating for sample size. The fewer reviews a game has, the more its score gets pulled toward the site-wide average, so a tiny game can't fluke its way to #1.
  1. 1Iron Snout93.06%
  2. 2The Expendabros92.90%
  3. 3Alien Swarm: Reactive Drop91.97%
  4. 4Alien Swarm91.72%
  5. 5Cube Escape: Paradox91.56%
  6. 6Double Action: Boogaloo89.26%
  7. 7Just Cause 2: Multiplayer Mod88.90%
  8. 8TrackMania Nations Forever88.68%
  9. 9Relic Hunters Zero: Remix88.26%
  10. 10VTube Studio88.22%
  11. 11Moonbase Alpha88.10%
  12. 12Ninja Kiwi Archive88.06%
  13. 13RED HOT VENGEANCE87.91%
  14. 14CS2D87.63%
  15. 15Bloons Monkey City87.42%
  16. 16Resident Evil 3: Raccoon City Demo87.09%
  17. 17Knightfall: A Daring Journey86.92%
  18. 18BLEACH Brave Souls86.48%
  19. 19Pool 2D - Poolians85.68%
  20. 20SAS: Zombie Assault 485.47%
  21. 21Fear Surrounds85.36%
  22. 22Bombergrounds: Battle Royale85.31%
  23. 23War Selection85.17%
  24. 24Card Hunter85.16%
  25. 25Of Guards And Thieves85.03%
  26. 26Mythgard85.03%
  27. 27MINDNIGHT84.92%
  28. 28Codename CURE84.88%
  29. 29Galcon 2: Galactic Conquest84.83%
  30. 30Zombie Defense84.81%
  31. 31King Arthur's Gold84.73%
  32. 32攻城与召唤 Siege and Summons 【5分钟一局 策略竞技 】84.63%
  33. 33Rise of Legions84.58%
  34. 34Orqa FPV.SkyDive84.57%
  35. 35AirMech Strike84.53%
  36. 36Yet Another Zombie Defense HD84.42%
  37. 37Age of Conquest IV84.27%
  38. 38Spiral Knights84.15%
  39. 39They Can't Stop All Of Us83.44%
  40. 40BRAIN / OUT83.18%
  41. 41Supraball83.03%
  42. 42Angel Legion82.84%
  43. 43Darwin Project82.79%
  44. 44Art of War: Red Tides82.53%
  45. 45The Lord of the Rings Online82.51%
  46. 46Battle Islands82.50%
  47. 47Hades' Star82.44%
  48. 48Never Split the Party82.29%
  49. 49Strife82.23%
  50. 50TOXIKK82.05%
  51. 51DC Universe Online81.98%
  52. 52Firestone: Online Idle RPG81.78%
  53. 53Cubic Castles81.75%
  54. 54America's Army: Proving Grounds81.74%
  55. 55Dead Maze81.73%
  56. 56Supremacy 1914: World War 181.62%
  57. 57March of Empires81.47%
  58. 58NosTale - Anime MMORPG81.08%
  59. 59Copa Petrobras de Marcas81.06%
  60. 60Star Trek Online80.96%
  61. 61BrainBread 280.94%
  62. 62Insanity Clicker80.82%
  63. 63Pixel Worlds: MMO Sandbox80.54%
  64. 64WAKFU80.31%
  65. 65ArcheBlade80.00%
  66. 66Call of War: World War 279.69%
  67. 67BEACHED79.48%
  68. 68BLOCKADE79.43%
  69. 69Elsword79.14%
  70. 70RIFT79.12%
  71. 71Dungeons & Dragons Online78.98%
  72. 72Pixel Strike 3D78.89%
  73. 73Real Pool 3D - Poolians78.88%
  74. 74Orcs Must Die! Unchained78.78%
  75. 75BLOCKPOST78.58%
  76. 76Panzar78.57%
  77. 77Zula Global78.08%
  78. 78Freestyle 2: Street Basketball77.70%
  79. 798BitMMO77.48%
  80. 80Soulworker77.38%
  81. 81Shroud of the Avatar: Forsaken Virtues77.33%
  82. 82Nomad77.16%
  83. 83Vindictus76.99%
  84. 84Digimon Masters Online76.83%
  85. 85Predecessor76.52%
  86. 86Planet Explorers75.76%
  87. 87Ylands75.22%
  88. 88GunZ 2: The Second Duel75.21%
  89. 89Hired Ops74.23%
  90. 90Fallen Earth Free2Play74.10%
  91. 91Phantasy Star Online 273.62%
  92. 92Line of Sight72.97%
  93. 93Undawn72.56%
  94. 94Tree of Savior (English Ver.)70.84%
  95. 95WARMODE70.75%
  96. 96MapleStory70.67%
  97. 97Last Man Standing69.91%
  98. 98BATTALION 194469.30%
  99. 99A.V.A68.62%
  100. 100SMITE 264.00%