1,687 Co-op Action games your group can play together online, including METAL SLUG 3, The LEGO® Movie - Videogame, and Murder Miners.
All games: 24
“METAL SLUG 3”, the masterpiece in SNK’s emblematic 2D run & gun action shooting game series, still continues to fascinate millions of fans worldwide to this day for its intricate dot-pixel graphics, and simple and intuitive game controls, heads out to the Steam gaming platform!
Join Emmet and an unlikely group of resistance fighters in their heroic quest to thwart Lord Business’ evil plans—a mission that Emmet is hopelessly and hilariously unprepared for. It’s a wild ride with a surprising mix of over 90 playable characters including Batman, Superman, Wonder Woman, the Green Ninja, Gandalf, Shakespeare,...
The #1 rated Xbox Live Indie Game. Halo-inspired. Destructible/constructible environments. Vehicles. Zombie survival. Hookshots. Infection mode: Be the zombie & eat the dead to level up your zombie abilities. Community playdates are still hosted every week, join us!
Nidhogg is the epic award-winning game of fencing tug-of-war complete with flying giant worms.
Darkness is coming. How long can YOU survive? Build your base by day, defend it by night. Play in online or local co-op. Stay alive as long as you can.
Build ships, stations, and factions with friends in StarMade’s online voxel sandbox. Create your own goals across a generated universe, with server-based co-op and PvP.
Take on Risk of Rain’s shifting stages with up to three friends online or on one shared screen, collecting items before the rising difficulty catches up.
Live the 4th Great Ninja War and its overpowering boss fights or defy your friends in ultra dynamic online and offline ninja confrontations!
Neverwinter is a free, action MMORPG based on the acclaimed Dungeons & Dragons fantasy roleplaying game. Epic stories, action combat and classic roleplaying await those heroes courageous enough to enter the fantastic world of Neverwinter!
Two years ago, a group of young teenagers found themselves trapped inside their school. They suffered through the longest night of their lives, chased by abominable creatures created by their principal. Some of them survived that terrible night, while others perished.
CastleMiner Z is an infinite world filled with deep places to explore, and horrifying monsters to slay. Build structures out of blocks, craft weapons and tools from raw materials, and explore the vast and frightening world around you.
In this award-winning platforming adventure, run, jump, and slap through the colorful worlds of the Glade of Dreams, face epic bosses, and team up in 4-player local co-op.
Hungry? Take your restaurant from a one star abomination to a five star wonder in Cook, Serve, Delicious! Plan your menu, upgrade your equipment, and master challenges with easy-to-learn, hard-to-master gameplay!
Experience the insane antics of Saints Row IV. The Saints have gone from the Penthouse to the White House - but Earth has been invaded and it’s up to you to save it with an arsenal of superpowers and strange weapons, in the wildest open world game ever.
Awaken as an unstoppable warrior and battle alongside your friends in this story-driven free-to-play online action game
Shoot! Dodge! and... Get Hit!? "Ikaruga" is a vertical shoot 'em up that features an unique polarity-switching gameplay. Switch the ship's polarity and "get hit and absorb" enemy bullets! Achieve High Score with the chain bonus!
Play 20 fairytale levels online or on one shared screen with up to two friends, mixing platforming, combat and open-ended physics puzzles.
Hero Siege is a fast paced Pixel Art ARPG featuring an expansive roster of unique classes, deep build experimentation, and a player driven economy.
Guacamelee! is a Metroidvania-style action-platformer set in a magical Mexican-inspired world. The game draws its inspiration from traditional Mexican culture and folklore, and features many interesting and unique characters.
Explore a monster-filled castle with up to three friends in Hammerwatch’s campaign, with online, LAN, and same-screen co-op.
Sanctum 2 combines tower-defense building and first-person shooting in an online campaign for up to four players. You and your friends protect oxygen-producing Cores through waves, character loadouts, and optional survival runs.
Contagion mixes cooperative zombie survival, a story campaign, and player-versus-player modes. See how its online party, game modes, and older PC setup fit your group.
Blending action and survival horror, Resident Evil 6 promises to be the dramatic horror experience of 2013.
Castle Crashers sends up to four knights through a comic fantasy campaign, with local and online co-op, magic, weapons, and animal companions.