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 Snout93.23%
  2. 2The Expendabros93.07%
  3. 3Alien Swarm: Reactive Drop92.11%
  4. 4Alien Swarm91.72%
  5. 5Cube Escape: Paradox91.56%
  6. 6Double Action: Boogaloo89.26%
  7. 7Just Cause 2: Multiplayer Mod88.90%
  8. 8TrackMania Nations Forever88.81%
  9. 9Relic Hunters Zero: Remix88.54%
  10. 10RED HOT VENGEANCE88.25%
  11. 11VTube Studio88.22%
  12. 12Moonbase Alpha88.10%
  13. 13Ninja Kiwi Archive88.06%
  14. 14CS2D87.63%
  15. 15Bloons Monkey City87.42%
  16. 16Knightfall: A Daring Journey87.18%
  17. 17Resident Evil 3: Raccoon City Demo87.09%
  18. 18BLEACH Brave Souls86.69%
  19. 19Pool 2D - Poolians85.92%
  20. 20SAS: Zombie Assault 485.71%
  21. 21Bombergrounds: Battle Royale85.57%
  22. 22Fear Surrounds85.36%
  23. 23Of Guards And Thieves85.36%
  24. 24War Selection85.31%
  25. 25Galcon 2: Galactic Conquest85.27%
  26. 26Card Hunter85.16%
  27. 27King Arthur's Gold85.04%
  28. 28Mythgard85.03%
  29. 29Orqa FPV.SkyDive84.92%
  30. 30MINDNIGHT84.92%
  31. 31Codename CURE84.88%
  32. 32Zombie Defense84.81%
  33. 33AirMech Strike84.75%
  34. 34Age of Conquest IV84.64%
  35. 35攻城与召唤 Siege and Summons 【5分钟一局 策略竞技 】84.63%
  36. 36Rise of Legions84.58%
  37. 37Yet Another Zombie Defense HD84.42%
  38. 38Spiral Knights84.29%
  39. 39They Can't Stop All Of Us83.84%
  40. 40Supraball83.39%
  41. 41BRAIN / OUT83.37%
  42. 42Angel Legion82.84%
  43. 43Hades' Star82.82%
  44. 44Darwin Project82.79%
  45. 45The Lord of the Rings Online82.64%
  46. 46Never Split the Party82.63%
  47. 47Art of War: Red Tides82.53%
  48. 48Battle Islands82.50%
  49. 49Strife82.23%
  50. 50DC Universe Online82.12%
  51. 51TOXIKK82.05%
  52. 52Dead Maze82.05%
  53. 53Firestone: Online Idle RPG82.05%
  54. 54Supremacy 1914: World War 181.94%
  55. 55March of Empires81.87%
  56. 56Cubic Castles81.75%
  57. 57America's Army: Proving Grounds81.74%
  58. 58Copa Petrobras de Marcas81.43%
  59. 59BrainBread 281.25%
  60. 60Star Trek Online81.11%
  61. 61NosTale - Anime MMORPG81.08%
  62. 62Insanity Clicker80.82%
  63. 63Pixel Worlds: MMO Sandbox80.80%
  64. 64WAKFU80.53%
  65. 65ArcheBlade80.27%
  66. 66Call of War: World War 279.98%
  67. 67BLOCKADE79.65%
  68. 68BEACHED79.48%
  69. 69Elsword79.38%
  70. 70RIFT79.34%
  71. 71Dungeons & Dragons Online79.24%
  72. 72Real Pool 3D - Poolians79.05%
  73. 73Pixel Strike 3D78.89%
  74. 74Orcs Must Die! Unchained78.78%
  75. 75BLOCKPOST78.58%
  76. 76Panzar78.57%
  77. 77Zula Global78.34%
  78. 78Freestyle 2: Street Basketball77.90%
  79. 79Shroud of the Avatar: Forsaken Virtues77.69%
  80. 80Soulworker77.61%
  81. 818BitMMO77.48%
  82. 82Vindictus77.26%
  83. 83Nomad77.16%
  84. 84Digimon Masters Online77.10%
  85. 85Predecessor76.52%
  86. 86Planet Explorers75.76%
  87. 87GunZ 2: The Second Duel75.44%
  88. 88Ylands75.22%
  89. 89Hired Ops74.41%
  90. 90Fallen Earth Free2Play74.37%
  91. 91Phantasy Star Online 273.75%
  92. 92Line of Sight73.22%
  93. 93Undawn72.85%
  94. 94Tree of Savior (English Ver.)71.00%
  95. 95MapleStory70.84%
  96. 96WARMODE70.75%
  97. 97Last Man Standing70.09%
  98. 98BATTALION 194469.30%
  99. 99A.V.A68.89%
  100. 100SMITE 264.13%