1,687 Co-op Action games your group can play together online, including Ghost Exorcism INC., Unrailed!, and Kitaria Fables.
All games: 24
Ghost Exorcism INC is a 1 to 6 player co-op horror game. Track down entities with your detectors, identify them… then carry out the exorcism protocol to send them back to the afterlife before it's too late!
Unrailed! is a co-op multiplayer game where you have to work together with your friends to build a train track across endless procedurally generated worlds. Master random encounters with its inhabitants, upgrade your train and keep it from derailing!
Action Adventure fused with RPG and Farming elements. Armed with sword, bow and spellbook, fight against a rising darkness threatening the world. Plunder dungeons in search of relics and resources, tend to your farm to make provisions and potions, and take on quests solo, or with a friend!
A new EDF adventure begins! Only this time, the action unfolds in a parallel world where the Earth is made of digital blocks. This world has befallen into chaos, as the once peaceful square Earth has been shattered into pieces. Shape aside, it is an Earth nonetheless which needs to be defended.
The world of mega-hit manga and anime BLEACH comes to Steam in this exciting 3D action game! Build a team using your favorite characters from the BLEACH universe!
Smash skeletons, defeat dragons, and battle giant golems in Tiny Tina's Assault on Dragon Keep: A Wonderlands One-Shot Adventure. Experience the acclaimed 2013 quest that started it all in this standalone campaign jam-packed with fantasy, fun, and mountains of magical loot!
"WELCOME TO THE PIONEER PROGRAM! As the newest recruit of Kindred Aerospace - The 4th best interstellar space exploration company - Your job is to determine if the planet ARY-26 planet is fit for humans. You may be short on equipment and experience, but you'll figure it out. Good luck!
The HD Remaster of Legend of Mana is coming to Steam. Meet a colorful cast of characters, use the unique "Land Make" System to build the World Map, and square off against fearsome monsters in the vibrant world of Fa’Diel.
At Dead Of Night is part horror film, part horror game and part ghost hunt. It blends live-action and graphics to create a unique immersive horror experience like no other.
Want to play the hardest cooperative 2D platformer ever? Want to finish no map ever? Want to be in pain for hours and cry, getting nothing in return? Come play DDNet with a large community of other sufferers!
Slice and dice your friends with boomerangs in this frantic physics party game. Join a crew of your favorite foods as you grill, chill and spill your enemies. Discover ridiculous power-ups and stack them together in deadly combinations.
Battlefield™ 1 takes you back to The Great War, WW1, where new technology and worldwide conflict changed the face of warfare forever.
Team up or face it alone in this top down zombie slaying defense adventure! Featuring up to 4 player online co-op, cleanse the infected wave by wave and upgrade your base with traps & defenses to build the Ultimate Zombie Defense. Can YOU stop them?
Fierce emotions help fuel SoulWorkers to save the world from the devastated scene of a post-apocalyptic world. In a world where only dark devastation reigns – you are the only SoulWorker to come to the rescue.
Be the hero in the ultimate STAR WARS™ battle fantasy with STAR WARS™ Battlefront™ II: Celebration Edition!
Hit the road in this massive sequel to the million-selling Cook, Serve, Delicious series. Manage your food truck, cook delicious dishes and serve customers as you take the road trip of a lifetime across war-torn America.
Go on an adventure to save your forest! Gargamel, the evil sorcerer just created the VILEAF, a plant that has the ability to attract and capture the Smurfs... but it's also TOXIC! Embody 4 iconic Smurfs and heal the plants on your way to Gargamel's hovel: the whole forest depends on you!
Enjoy some of the best loved Flash games of the past in this awesome time capsule of over 60 Ninja Kiwi classics. Experience a piece of history and play the original Flash games that spawned the worldwide phenomenon of Bloons TD.
A Way Out is an exclusively co-op adventure where you play the role of one of two prisoners making their daring escape from prison.
Dive into intense dinosaur hunting adventures with your friends. Complete hunting contracts for Preton Corporation. Gather rewards, improve your equipment and become a master hunter. Are you the hunter or the hunted?
Serious Sam 4 reignites the classic FPS series in a high-powered prequel loaded with an explosive arsenal, intergalactic carnage, and perfectly timed one-liners.
Hustle by day and risk it all at night in Need for Speed™ Heat Deluxe Edition, a white-knuckle street racer, where the lines of the law fade as the sun starts to set.
Play Smash Legends for free! Smash Legends is an exciting PVP action brawler where fairy tale Legends engage in a lively battle. Play solo or in a 3v3 team battle with your friends! Play now with Smashers from all over the world on Steam, iOS, and Android!
Embrace unrivaled destruction in Battlefield 4™. Revel in the glorious chaos of all-out war packed with rewarding, tactical challenges in an interactive environment.