Hidden Online 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 online co-op games. For those who prefer not to search, check out lists of the most played, top deals and best free to play Online Co-Op games on Steam.
            
              
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        Project Unknown
      
      
        An online co-op horror game featuring unique playable characters and RPG mechanics. Exorcise ghosts using your special abilities and tools while surviving the supernatural onslaught
      
    
    
  
      
        Backseat Drivers
      
      
        A punishing 2-4 player driving test of your relationships. Gramma can't see and you can't drive. Together, you'll navigate the world's worst detour in an ancient car that drives even worse than it looks.
      
    
    
  
      
        WASD : The Adventure of Tori
      
      
        WASD: The Adventure of Tori is an online co-op game for 2 ~ 4 players. Each player can only use own key — W, A, S, or D. Even a small mistake can make the team fail, so talk with your teammates and work together! You need 2 ~ 4 players to play WASD: The Adventure of Tori.
      
    
    
  
      
        LEGO® Party!
      
      
        LEGO® Party! is a 4-player party game that's built different! Compete against your friends in wacky Challenge Zones and 60 hilarious minigames from across your favorite LEGO sets like Pirates, Space, NINJAGO® and more. Play your way! Join your friends no matter their platform locally or online!
      
    
    
  
      
        Moros Protocol
      
      
        Face the darkness in Moros Protocol, a pixel-painted sci-fi FPS roguelite where every battle is for survival. Stranded on a decaying warship, stalked by horrors, and guided by a voice you don't recognize, you must adapt, upgrade and push forward. You may be outnumbered, but you are not outmatched.
      
    
    
  
      
        Goblin Cleanup
      
      
        A co-op cleaning game where you have to clean and rearrange a dungeon before the next adventurers come to complete it again.
      
    
    
  
      
        Eterspire
      
      
        Eterspire is a true free-to-play, cross-platform MMORPG where your skill and dedication define your progression!  Play on PC and Mobile with crossplay, join a friendly and active community, discover new content updates every two weeks, and explore a massive world full of charming characters.
      
    
    
  
      
        LEGO® Voyagers
      
      
        From the makers of LEGO® Builder's Journey comes a new 2-player co-op adventure about friendship and play. When two friends make it their mission to rescue an abandoned spaceship, they embark on a journey beyond their wildest dreams.
      
    
    
  
      
        Dungeons of Eternity
      
      
        Endless fantasy action and adventure await you and your friends in Dungeons of Eternity. Hack-n-slash takes on a new meaning in VR: swing swords, throw axes, use bows, wield magic staffs, and more to make it out alive. Become the most powerful adventurer in this blockbuster VR experience!
      
    
    
  
      
        Starlight Revolver
      
      
        Starlight Re:Volver is a 1 to 4 player co-op action roguelite set in a vibrant anime world. Transform into one of four magical heroes, express your style with accessories, and join friends for combat and fishing.
      
    
    
  
      
        BACKROOMS: APPREHENSION
      
      
        A terrifying multiplayer horror experience with social deduction elements. Trapped in the Backrooms, up to 12 players must try to work together to survive and expose the shapeshifting Skin Stealer hiding among them before it’s too late. Who will you trust?
      
    
    
  
      
        Bang Bang Barrage
      
      
        Survive the treacherous sea in this quirky multiplayer shooter game! Play solo or team up and fight off Cthulhu's minions. Master a unique recoil-based mechanic to blast enemies and chart your course. Mix and match upgrades to craft the perfect sea-surviving strategy!
      
    
    
  
      
        ERA ONE
      
      
        Era One is an innovative space game that combines elements of real-time strategy, base building, space survival, and tactical battles. Players can create and customize their bases from scratch, construct various types of structures and warships, manage fleets, and engage in tactical space battles.
      
    
    
  
      
        Whimsical Artefacts
      
      
        A co-op friendslop game with a heavy focus on customization via drawing. Scavenge liminal bunkers and obtain artefacts that may or may not aid you and your friends.
      
    
    
  
      
        Frosthaven
      
      
        From the creative mind of Isaac Childres, the highly acclaimed board game moves to the digital realm in the video game adaptation of FROSTHAVEN! The dark fantasy tactical RPG features deep mechanics and challenging yet satisfying gameplay both in Single Player and Co-Op Online Multiplayer.
      
    
    
  
      
        A World of Keflings
      
      
        Keflings may be small, but their kingdom-building adventures are gigantic! Build a world with your friends in A World of Keflings! Harvest resources, construct robots, befriend a dragon, and help a creepy witch get even creepier in this update of the classic 2010 city-building adventure.
      
    
    
  
      
        Paddle Paddle Paddle
      
      
        Paddle through pain. Solo or co-op. One paddle each. Lava everywhere. You’ll fall. You’ll scream. You might cry. Good luck and embrace the salt.
      
    
    
  
      
        Bogos Binted?
      
      
        Welcome to a sinful night with the galaxy’s wackiest aliens. Play twisted tabletop games with up to 4 players, devise brilliant strategies, bluff your way to victory, and try not to lose your head - literally.
      
    
    
  
      
        Phantom Squad
      
      
        Phantom Squad is an intense 1-4 player tactical top-down shooter that blends fast-paced combat with real-time strategy.
      
    
    
  
      
        C.A.S.T. (CHERNOZEM ANOMALY STRIKE TEAM)
      
      
        C.A.S.T is a third-person PvE extraction shooter playable solo or in co-op. Select your character and loadout to battle enemy hordes, evade anomalies, and complete objectives across handcrafted maps with dynamic procedural elements.
      
    
    
  
      
        Climb The Backrooms
      
      
        Ascend through the twisted levels of the Backrooms using physics-based object manipulation to overcome obstacles, solve mind-bending puzzles, and uncover unsettling secrets. Play solo or team up in online co-op with up to 4 players as you climb higher, think smarter, and survive the unknown.
      
    
    
   
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
    