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.
Filters & Lists
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.
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.
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.
BLACK STIGMA
BLACK STIGMA is a hero shooter game with a diverse cast of characters. You can choose and customize a handgun of your preference and upgrade your character's abilities in different ways. Play as your ideal killer character, from long-range precision shots to close-range brawls.
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.
Tobacco Shop Simulator
Run your tobacco shop. Sign contracts with leading brands, order products, hire workers, expand your store, and never let your customers leave the store empty-handed. Play with friends or go solo, and enjoy the growth of your shop.
GONE Fishing
GONE Fishing is a co-op multiplayer survival horror game where you and your friends must work together to stay alive, by fishing. The only way to survive is to keep feeding the lake’s insatiable hunger before it feeds on you. Can you satisfy the hunger... or will you become the next offering?
School 666
School 666 is a 1-4 Player Co-op Survival Horror. You must escape this endless nightmare. Try to identify the correct path and survive the anomalies in this endless school. Some extremely powerful anomalies will catch you to their dimensions. Explore the reason why you are here... and don't die.
Parallel Experiment
Two detectives, one deadly experiment, a race against time. Each player only has one half of the puzzle. In this 2-player co-op puzzle game you can survive the parallel experiment only by working together.
Paranormal Cleanup
Paranormal Cleanup is a 1-4 player online co-op survival horror game. This is no ordinary clean-up job. You are tasked with cleaning up paranormal locations. Unclog dirty toilets and scrub ectoplasm, but don't get caught by the entities that are hunting you!
Guilty as Sock!
Enter a chaotic courtroom where socks play lawyers, prosecutors, and judges! Use absurd evidence, craft wild arguments, and deliver verdicts in this hilarious online party game. Improvise, strategize, and shout "Objection!"—because in Guilty as Sock!, chaos always wins!
Forsaken Frontiers
Step into the frozen unknown in Forsaken Frontiers, a cooperative analog horror adventure set in the unforgiving embrace of an everlasting winter.
Mutants: Genesis
Mutants: Genesis is an online card game that you can play solo or with up to 3 players in PvE and PvP modes! Join the next generation of Psycogs and climb the ranks to establish yourself as Champion! Collect hundreds of mutants, fashion your own deck, cooperate with or fight other players!
Capcom Fighting Collection 2
Capcom's new fighting collection hits the stage! Choose from fan-favorite games like Capcom vs. SNK 2: Mark of the Millennium 2001 and Project Justice to 3D action games like Power Stone and Power Stone 2 in this collection of eight classic fighting games!
Broventure: The Wild Co-op
Broventure = Vampire Survivors + Base building + Co-op. Band together with friends and obliterate hordes of grueling enemies, gather crucial resources, and transform your camp into a sanctuary of liberation.
Omega Crafter
Adventure in a vast open-world survival craft game with your programmable sidekick Grammi! Program the Grammi to collect materials, build your town, craft weapons and armor to challenge strong enemies! Play alone or with friends online!
Equinox: Homecoming
Saddle up with friends and investigate a dark mystery, where each trail leads to wonder and intrigue. A string of events has set the idyllic island on edge. Discover the truth behind your mother’s disappearance and a local's sudden death. For fans of horses, murder mysteries, and cozy exploration!