Best Online Co-Op Steam Games on Sale
Unlike generic lists, our game recommendations use a rigorous analysis of Steam user reviews to identify and feature only the best, community-validated online co-op games.
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EverSiege: Untold Ages
Retreating ends here. Defend Bastion against evil hordes, reclaim lost powers, rebuild ancient ruins, and adapt your tactics to reverse the siege. Shape your playstyle in this hero-strategy rogue-lite solo or co-op up to 3 players.
John Carpenter's Toxic Commando
Pick a character and team up with three friends ‘cause it’s time to save the world. Experience intense FPS action as you obliterate hordes of terrifying monsters! You may not be on the best team of mercenaries, but you are… a Toxic Commando!
Ranger’s Path: National Park Simulator
Begin your park ranger journey in Ranger’s Path: National Park Simulator. Maintain trails, assist visitors, check permits and respond to emergencies. Explore diverse biomes and observe varied animal behaviors across a wide range of species.
Desynced
Desynced is a sci-fi strategy game with fully customizable units and behaviors. Gather, build, research, and explore the unknown. Alone or with friends, unveil the mystery of an AI on the edge of self-awareness and uncover the hidden truth in this blend of strategy, automation, and exploration.
Scott Pilgrim EX
Join Scott Pilgrim and Ramona Flowers in a brand-new brawling adventure across space, time, and the streets of Toronto!
Towerborne
Towerborne is an exciting side-scrolling Action RPG Brawler. As an immortal warrior journey across a crumbling world, uncover the mystery of the fallen City of Numbers, and push back the corruption threatening humanity’s survival.
Nested Lands
Nested Lands is a ruthless medieval RPG game featuring in-depth village building, large-scale social management and combats. Gather survivors, build a settlement, craft, master your skills, survive, and endure alone or in online co-op.
REANIMAL
The creators of Little Nightmares™ I & II have returned to take you on a darker, more terrifying journey than ever before. In this horror adventure game, a brother & sister go through hell to rescue their missing friends and escape the island that they used to call home.
Roadside Research
Roadside Research is a 1 to 4 player co-op gas station simulator. Except you’re aliens. And undercover. Do very human things like restocking shelves while preparing for the invasion. Just don’t get caught.
Rogue Point
From the creators of Black Mesa: Welcome to Rogue Point! A 4-player co-op shooter where teamwork is everything. Join forces on intense missions with evolving objectives and powerful upgrades. Plan, Adapt, and Overcome. Your squad’s survival depends on it.
HumanitZ
HumanitZ is an isometric, open-world sandbox survival game set in a world ended by a zombie outbreak. Survive alone or with friends by scavenging, crafting, building, and fighting to last as long as ‘humanly’ possible. You can’t change the past, but you can fight for the future of humanity.
Fish Hunters: Most Lethal Fishing Simulator 🐟
Hunt fish solo or in co-op. Haul them in and take them down with crazy guns. Try out different baits and rods, explore unique locations, and complete your fish collection in the atlas. Or just kick back by the campfire with friends in this wild webfishing adventure 🎣 🐟 💥
Vampires: Bloodlord Rising
In this dark, open-world adventure, you awaken as a Vampire Lord. Build and customize your castle. Hunt for blood, fight, craft, and gather. Command your loyal servants. Shapeshift into a bat to explore the night and survive the relentless Inquisition, solo or in 4-player co-op.
Occupy Mars: The Game
Survive and colonize Mars in a highly technical, open-world sandbox game. Build and upgrade your base, discover new regions, conduct mining operations, retrieve water, generate oxygen, grow crops, and fix broken parts.
Folklore Hunter
You’re a world-renowned hunter of supernatural beasts. Track down urban legends from all over the world, set traps, solve disturbing puzzles, and defeat the beasts before you succumb to their otherworldly presence.
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.
Viractal: Will You Trust Your Party?
A strategic board game-style RPG where dice rolls guide your journey! Build your deck, explore changing maps, and face events shaped by your choices and luck. Play solo or online with friends—every adventure is a new experience!
The Gold River Project
The Gold River Project™ invites you and your friends on an open world camping trip gone wrong. Alone or together, you must explore, craft, build, and survive the increasingly harsh environments of the Pacific Northwest wilderness as you uncover the experiment trapping you inside.
LORT
LORT is a 1–8 player co-op action roguelite. Team up with your friends to battle, loot, and stack ridiculous power-ups across a cursed fantasy world. Fight toward escape, revive your homies, and get absolutely chadded as you evolve from goblin tickler to god slapper.
On-Together: Virtual Co-Working
Virtual co-working with friends or strangers all over the world! Digital pals hang out at the bottom of the screen while you work, study, and get stuff done. Includes productivity tools, hangout spots, breaktime games, and more!
StarRupture
StarRupture is a first-person open world base-building game with advanced combat and tons of exploration. Play alone or in a group on this sublime and ever-changing planet, extract and manage resources, create your complex industrial system and fight off hordes of alien monsters.
No One Survived
This is a multiplayer cooperative open world construction survival sandbox game, where you and your friends must find supplies and build shelters in this world. You have to keep an eye on your character's needs state at all times, a bad state is likely to lead to death.
Alchemy Factory
Craft your workshop as an alchemist! Harness arcane devices to automate crafting. Sell alchemical goods, fulfill commissions, and rise to become a renowned alchemy magnate. Multiplayer Supported! Invite master designers to (ahem) contribute their expertise—let them optimize your production lines!
Pioneers of Pagonia
Rebuild hope in a world that was lost in the fog. Lead your Pioneers across the isles of Pagonia, unite scattered tribes, raise thriving communities and discover the history of your people as you reclaim your world in the new story campaign.
Survive the Nights
Hardcore open-world survival where preparation is everything. Scavenge, craft, fortify during the day. When night falls, the infected hunt in numbers. Play solo or with friends in a brutal post-apocalyptic sandbox where survival is earned through smart decisions. How many Nights will you survive?
MARVEL Cosmic Invasion
A cosmic battle awaits! Choose between 15 Marvel Super Heroes in this frenetic action beat ‘em up to fight against the deadly Annihilation Wave threatening the galaxy. From New York City to the depths of the Negative Zone, the future of the Marvel Universe will be fought for across the stars!
Solo Leveling: ARISE OVERDRIVE
Solo Leveling, the webtoon with 14.3 billion views worldwide, is now an action RPG game! Help our hero grow from his humble E-Rank beginnings.
Feign
Welcome to Feign, an intriguing role-based game that blends mystery, strategy, and deception. Step into a quirky, small town where Innocents, Impostors, and Neutrals navigate suspenseful gameplay. Your mission unfolds under the cover of night - then it's up to the village by day to vote someone out!
Ultimate Zombie Defense 2
4-player co-op, zombie slaying, base building, boss battling mayhem! Cleanse the infected wave by wave and upgrade your base with traps & defenses in Ultimate Zombie Defense 2!
Storebound
A 1-3 co-op puzzle horror game. Lost in an accursed megastore, work together to find the exit before its lurking horrors trap you forever.
Restaurats
Lead a medieval restaurant with a team of rats like you! Cook the food, throw it at the guests, wipe the drinks under the skeletons! Become a legendary rat chef, proving to orcs and vampires that the most delicious bloody meat is served in your restaurant!
Vivid World
A follow-up to the hit game Vivid Knight, Vivid World is a completely new party-building, roguelike strategy game! Our story takes place in the Underworld, a land ruled by demons. Utilize and master our protagonist, Lemuria's new Jewel Magic to conquer strange dungeons.