1,793 Action · Online co-op games your group can play together online, including Teenage Mutant Ninja Turtles: Splintered Fate, Ravenswatch, and Murky Divers.
All games: 24
TMNT Splintered Fate - Unleash the Turtles in a roguelike quest to rescue Splinter from the Foot Clan! Master ninja skills, unite in bodacious co-op gameplay, and conquer iconic NYC locales.
Fallen heroes of old folk tales and legends: you are on the verge of a crucial battle against the Nightmare invading and corrupting your world. A roguelike action game from the creators of Curse of the Dead Gods©, playable solo or in online co-op.
Solo or up to 8 players. Get rid of your employer's failed experiments in abandoned underwater labs. Navigate your submarine, avoid abyssal terrors, and remove all corpses.
Venture forth as part of a specialized team of fellow players tasked with retrieving classified materials, evading the black goo virus, and the nightmarish entities it has spawned. With time running out before the US government initiates a devastating nuclear strike to contain the spreading menace.
Starship Troopers: Extermination is an up to 16-player co-op FPS that puts you on the far-off frontlines of an all-out battle against the Bugs! Squad up, grab your rifle, and do your part as an elite Deep Space Vanguard Trooper to take back planets from the Arachnid threat!
Once Human is a Strange Worlds Survival Game set in a strange, post-apocalyptic future. Unite with friends to fight monstrous enemies, uncover secret plots, compete for resources, and build your own territory. Once, you were merely human. Now, you have the power to remake the world.
A heart-pounding and hilarious horror party game set in a pitch-black mansion. Armed with a flashlight, a revolver, and proximity chat, you and up to five friends sneak, shout, and stumble your way through tense shootouts, chaotic traps, and total darkness.
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!
Red Barrels invites you to experience mind-numbing terror, this time with friends. Whether you go through the trials alone or in teams, if you survive long enough and complete the therapy, Murkoff will happily let you leave… but will you be the same?
Arizona Sunshine® Remake elevates the original, award-winning game, completely rebuilt with GORE-geous VR graphics and next-gen VR combat and weapons. Face the undead alone or with up to three fellow survivors in a post-apocalyptic southwestern America overrun by zombies.
Join the rebellion against the evil corporation Blackveil in this action-packed roguelite for 1-3 players. Select your MOBA-like champion, collect RPG-style loot and infiltrate Blackveil’s massive factory. Wreak havoc, and smuggle out loot to get INSANELY powerful!
Grab your board and master the mountain! Descenders Next is the ultimate extreme sports game, with sprawling snowy peaks, winding dirt tracks, and tons of parks to conquer. Will you and your friends become the Next Ultimate Descenders?
RABBIT & STEEL is a co-op action roguelike that recreates the essence of high-level MMO raiding in a randomized, simplified, bunny-sized package. Choose your class, gather your rabbit-eared companions and battle your way to the Moonlit Pinnacle!
Wild Woods is a couch co-op game full of action, teamwork and woodland critters. One to four players take on the role of brave little cats defending their wooden wagon on its way through a dangerous forest. Clever cooperation is key - their way is full of obstacles!
Dive into Fantasy Online 2, a rich 2D pixel art MMORPG full of adventure. Master diverse skills, join a guild, explore pixelated zones, and engage in simple fun mmorpg combat. Hundreds of items are waiting for you to collect across 4 characters! Join the fun today!
Echo Point Nova is an open-world FPS that offers unparalleled freedom and thrilling speed. Designed for both singleplayer and coop. From the creators of Severed Steel.
An online co-op survivor-like auto-shooter set in the world of Stolen Realm. Battle relentless hordes of enemies, discover powerful artifacts, modify unique skills, and build unstoppable combos to survive. Play solo or with friends and unleash the full power of the Realm.
The Last Plague: Blight is an authentic survival experience rooted in realism and immersion. Endure the hazards of a brutal open world, uncover the origins of a mysterious disease, and become humanity’s final hope of ending the Blight.
A survival crafting adventure set in the Fourth Age of Middle-earth. Lead the Dwarves to reclaim Moria - mine, build, and battle through procedurally generated depths alone or with up to 8 players in co-op. It is time to return to Moria!
Film your friends doing scary things to become SpöökTube famous! (strongly advised to not go alone)
"Mayhemers" is a multiplayer chaos creation game for up to 8 players with a procedurally generated map. Choose your side: Will you be a Mayhemer or a Guardian? Mayhemers' task is to create chaos. Guardians' task is to stop them.
In Enlisted, you are not only commanding a single soldier, but an entire squad! This MMO squad based shooter recreates the key battles of the bloodiest war of the 20th century, with hundreds of soldiers, tanks and aircraft taking part in each battle.
Superball is a multiplayer 3v3 action game. An all-out blast of football in a cyberpunk setting. Choose a hero with unique abilities and conquer the sport of the future. Your accurate passes and strikes, as well as artful defense will lead your team to victory!
Choose a planet, build your fortress, and prepare for war. Arm yourself with powerful weapons, deploy troops, construct turrets, and defend your stronghold against relentless attacks. Team up with a friend or fight alone in this action packed block builder, where only the strongest survive.