Best Online Co-Op Games on Steam
Cooperative games played with others over the internet.
Browse all Online Co-Op →
1Terraria - Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!
May 16, 2011
In this game, you can…
- kill one world-changing boss and watch new biomes appear, new ores rise up, and the whole map turn into a deadlier version of itself.
- hunt down specific triggers to summon absurd bosses, like catching a rare worm just to call up a sea monster that can wipe you.
- fight a boss rush that starts with a cult leader, escalates into world-invading pillars, and ends with a final boss dropping in immediately after the last pillar falls.
- build a tiny shelter before night, then hold out until dawn against monsters that suddenly flood the surface.
- dig so deep you stumble into giant underground landmarks like beehives, buried pyramids, and hidden mushroom biomes.
- build a custom arena with platforms and buffs, then use it to fight bosses on your own terms instead of wherever you happen to meet them.
- build a hotel-like tower of houses to attract dozens of NPC residents, then watch them move in and sell new gear and services.
2Team Fortress 2 - Nine distinct classes provide a broad range of tactical abilities and personalities. Constantly updated with new game modes, maps, equipment and, most importantly, hats!
Oct 10, 2007
In this game, you can…
- join a match that turns into a ceasefire where both teams build sentries, drain their ammo to make them click, then stack into towers on top.
- watch the objective get stolen and then join a conga line that marches across the map until both teams are partying in the goal room.
- blast-jump yourself across the map with rockets to reach rooftops, flank fights, and escape danger.
- switch between nine totally different classes with roles that change how you move, fight, and support your team.
- go invisible as a spy, sneak behind the enemy line, and take people out up close before vanishing again.
- play a co-op mode where you team up to survive wave after wave of attacking robots.
- get headshot while you're doing a taunt because a sniper is calmly posted on a distant tower.
- walk into a live round and end up playing rock-paper-scissors with an enemy instead of fighting.
3ELDEN RING - THE CRITICALLY ACCLAIMED FANTASY ACTION RPG. Rise, Tarnished, and be guided by grace to brandish the power of the Elden Ring and become an Elden Lord in the Lands Between.
Feb 24, 2022
In this game, you can…
- discover a whole underground world layer with its own landscapes, secret bosses, and places you'd never guess existed.
- find bosses that only appear at night, turning a quiet road into a sudden unique fight with special loot.
- follow a side quest that escalates into meeting an entire eccentric family and ends with you marrying into it.
- walk away from a boss, roam somewhere else for gear and levels, then come back later and finally win.
- step out into a massive open world and immediately ride in any direction you can see.
- ride a spectral horse that can double-jump, then use mounted combat to fight huge enemies in the open field.
4Left 4 Dead 2 - Set in the zombie apocalypse, Left 4 Dead 2 is a co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.
Nov 16, 2009
In this game, you can…
- play as the infected in multiplayer, coordinating ambushes and hunting your friends as special monsters.
- have a giant brute show up mid-fight and start throwing cars at you in the middle of your escape route.
- run the same campaign twice and get different enemy spawns, item placement, lighting, and even weather, changing every fight and route.
- rip through a crowd with a chainsaw, then swap to a frying pan and keep clearing zombies up close.
- get grabbed by a long tongue and dragged around a corner while your team has to sprint after you.
- startle a crying witch, and she instantly mauls the nearest survivor.
- get vomited on, and it immediately calls a horde straight onto your whole team.
- race to fill a generator with gas cans while the other team tries to stop you, turning the match into a frantic objective sprint.
5Baldur's Gate 3 - Baldur’s Gate 3 is a story-rich, party-based RPG set in the universe of Dungeons & Dragons, where your choices shape a tale of fellowship and betrayal, survival and sacrifice, and the lure of absolute power.
Aug 3, 2023
In this game, you can…
- possess a guard, make them open a gate that releases giant spiders, then watch the chaos from the rafters.
- stack a bunch of boxes into a tower, then climb it to reach places you couldn't otherwise.
- romance wildly different beings, including vampires, ogres, lizards, and even a tentacled god.
- surround a boss with explosive barrels before the fight, then blow them up instead of fighting fair.
- turn a flooded room into an electric trap, then have the enemy freeze it into ice so everyone slips while you hold the door.
- pick up a locked chest and carry it back to camp to open later instead of unlocking it on the spot.
- earn a dog's trust step by step, pet them, play fetch, and eventually have them become your familiar.
- talk your way through conflicts, befriend enemies, or side with or kill basically any faction and watch regions treat you differently afterward.
6Phasmophobia - Phasmophobia is a 4 player online co-op psychological horror. Paranormal activity is on the rise and it’s up to you and your team to use all the ghost-hunting equipment at your disposal in order to gather as much evidence as you can.
Sep 18, 2020
In this game, you can…
- use your real voice to taunt a ghost, and it can hunt you for what you say.
- ask a ghost questions, hear it answer "close" and "die," then get strangled while your friends photograph the body for cash.
- trigger a cursed item that starts a deadly round of hide-and-seek while you listen from a hiding spot.
- insult a ghost inside the house, and it can instantly lock the door and start hunting your teammate.
- sit in the truck watching cameras and sensors while your friends investigate inside and try not to get hunted.
- take a photo of a ghost standing over a collapsing teammate, and sell that death moment as mission-paying evidence.
- watch a ghost ignore everyone else during a hunt, beeline to the basement to stare at you, then walk away.
7Among Us - An online and local party game of teamwork and betrayal for 4-15 players...in space!
Nov 16, 2018
In this game, you can…
- crawl through vents and pop out somewhere unexpected.
- kill someone, then report the body yourself and lead the investigation away from you.
- get killed or voted out and still keep doing tasks to help your team win from beyond the grave.
- find a body, report it, and instantly drag everyone into a meeting to reconstruct who was where.
- lock doors to trap someone in a room, cut off their escape, and kill them in private.
- trigger an oxygen or reactor emergency that forces everyone to sprint to fixes while you pick off someone separated from the group.
- pretend to do tasks while everyone watches the task bar for proof you're actually helping.
- watch security cameras or the admin map to spot suspicious movement without being in the room.
8Don't Starve Together - Fight, Farm, Build and Explore Together in the standalone multiplayer expansion to the uncompromising wilderness survival game, Don't Starve.
Apr 21, 2016
In this game, you can…
- get turned into a ghost when you die, then haunt specific items to resurrect yourself back into your body.
- steal a giant bird egg, keep it from overheating by the fire, and hatch it into a baby that follows you around.
- discover a friendly pig village, use it as a safe base, and then watch the pigs turn into werepigs later.
- turn a tiny camp into a real settlement with farms, spider dens, bee hives, and even a beefalo herd.
- build a trap-filled room just to protect a stolen egg from spiders until it finally hatches.
- bring friends back from death with things like a heart, an amulet, a touch stone, or the starting portal.
- watch a one-eyed giant arrive in winter with ground-shaking footsteps, smash your camp, and force you to survive in the dark.
9Valheim - A brutal exploration and survival game for 1-10 players, set in a procedurally-generated purgatory inspired by viking culture. Battle, build, and conquer your way to a saga worthy of Odin’s patronage!
Feb 2, 2021
In this game, you can…
- build a house with a fireplace and die if you forget ventilation.
- drag a cart full of ore across the wilderness, then end up building roads and supply routes to get it home.
- ship ore and even livestock across islands by building docks and running maritime trade routes.
- hunt sea serpents on purpose at night for food.
- watch enemies from different regions start fighting each other while you just stand back.
- build with structural support so big halls and towers need real beams, not just stacked walls.
- sail in a night storm, guide a friend's ship to port by torchlight, then sprint to the walls when a raid warning hits.
- tear down a bad build and get all the materials back, so you can rebuild freely.
10Lethal Company - A co-op horror about scavenging at abandoned moons to sell scrap to the Company.
Oct 23, 2023
In this game, you can…
- sell every last scrap, then haul a teammate's body to the counter for the final few credits to hit quota.
- stay on the ship as mission control, use the terminal to open doors and spot threats, and talk your team back alive through the maze.
- listen to your friend's voice get muffled and cut off mid-sentence as a monster grabs them in proximity chat.
- hear a teammate dying over the radio while you keep scavenging, and the person guiding you keeps talking after they're already dead.
- open a trapped teleporter room, watch one rescue turn into a chain of monster attacks, and still have to find a way out.
- step into a mineshaft because your friends told you to, then they later find you cocooned and hanging from the ceiling.
- watch a teammate calmly warn you about a landmine, then immediately scream about a spider and get blown up mid-run.
- buy gear like jetpacks, ladders, and stun grenades, then accidentally turn them into hazards that kill your own crew.
