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
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.
Crime Simulator
You’re out of jail, but the debt isn’t gone. Sneak, steal, and break into houses solo or in 4-player co-op. Use lockpicks, sleeping gas, and brute force to complete jobs, outsmart security, and make enough money before time runs out. Will you pay back what you owe, or lose everything?
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.
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!
Wrap House Simulator🌯
Welcome to Wrap House Simulator! Run your own wrap shop, chop, grill, and serve in this cooking adventure. Customize your shop, master the grill, and survive the rush solo or co-op with up to 4 players. Keep up with orders, satisfy customers, and build your dream restaurant!
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!
Tank Squad
Tank Squad is a tactical-combat action game. Take part in big tank battles during World War II. Play single-player or coop (4 players). Repair your tanks, replenish supplies, manage the crew and get back to the action!
Survival Machine
Build your base on a moving Machine, travel through biomes with different resources, and prepare for the night when a zombie threat is much higher than during the day. Would you go solo or explore this new world with your best friends?
Vellum
Write on! Defend the books in Vellum, a co-op, literary roguelike! Harness class-defining colors, master an inspired spellbook, and influence the growth of your enemy! As a group or solo, you'll craft plot-twisting builds to rewrite the rules in Ink!
BOKURA: planet
"There's something I can't tell you..." Explore new frontiers of co-op gaming in BOKURA: planet, a puzzle adventure game that you can only play with two players. Take on the role of a spaceship's exploration crew and try to escape from the red planet you crash-landed on.
Bureau of Contacts
"Bureau of Contacts" - ghost-hunting game for 1-4 players, in which you'll encounter 2 enemies at once - location itself and the ghosts with most human-like intelligence ever. So...look around and watch what you say!
PARANOIA PLACE
PARANOIA PLACE is a 1-3 player online co-op survival horror game. Together or alone, you will need to solve puzzles, find items and run from the bloodthirsty demonic killer.
Call of Clans
Call of Clans is an online turn-based strategy card game set in a magical world. Build a versatile deck with minion and skill cards to challenge equally matched opponents in a world of swords and magic. Team up with others to conquer challenging co-op dungeons