可以和朋友在线一起玩的动作（Co-op）游戏共 1,687 款，包括EARTH DEFENSE FORCE 5、Blackwake和Bad Guys at School。
全部游戏: 24
Stand and fight for humanity. This arcade shooter takes place in the year 2022, as the Earth Defense Force fends off an all-out attack by unknown life forms. Become an EDF soldier, battle against endless hordes of immense enemies, and restore peace to the earth.
Blackwake is a multiplayer naval FPS focused on teamwork and cooperation. Fire the cannons, sink enemy ships or board them with firearms and steel.
In Bad Guys at School you can play as students and revolt against school system by completing missions, or decide to become a teacher that must maintain order despite the violence and brutality in the school.
Dragon Marked For Death is a 2D side-scrolling action RPG game where up to 4 players can play together in online multiplayer. The characters, known as the Dragonblood Clan, have forged a pact with the Astral Dragon, which granted them special new powers.
Sub Rosa is a multiplayer first-person shooter about tense deals, double-crosses, and the occasional high-speed car chase.
山姆的街机风格射击战役穿越三个世界：线上最多16人，同屏本地合作最多4人。
这款节奏飞快的街机FPS让Sam在古埃及对抗Mental的军队，支持在线合作和本地分屏。
Hunt: Showdown 1896 is the brutally rewarding extraction shooter. Track twisted monsters and overcome ruthless PvP. Take bounties in corrupted backwaters lost to history. With a team, you might survive. Die with nothing or get out with everything.
Mortal Kombat is back and better than ever in the next evolution of the iconic franchise.
重温两部经典战役和 Bright Island：线上服务器默认可容纳 16 人，专用服务器最高可设为 42 人，本地分屏最多支持 4 人。
Shovel Knight is a sweeping classic action-adventure game with awesome gameplay, memorable characters, and an 8-bit retro aesthetic. If you love games with perfect platforming, beautiful art, infectious music, lovable bosses, humor and levity, and real heart… Shovel Knight is for you!
A wizard brawler about spell drafting and beard envy, MageQuit allows up to 10 mages to battle online or locally. Beards grow longer with each kill; the wizard with the longest beard after 9 rounds wins!
An addictive fast-paced hybrid of Card games & Tower-Defense. Play 1v1 - or bring a friend for 2v2 - and engage in epic online multiplayer battles full of innovative strategy and awesome plays! Collect 200+ cards with unique mechanics, all free!
在 Space Engineers 中共享 Creative 或 Survival 世界，把采集来的资源和想法变成飞船、基地与任务。
Stay Out - is a MMORPG with shooter elements, based on spirit of “stalking” - an urban exploration, searching and exploring mysterious, abandoned and forgotten by humanity pieces of our planet.
Jelly Brawl: Classic is a FREE sticky and destructive multiplayer party game where you gotta jiggle, flop, and pop your way to the top! Fight alone or against friends for freedom from a mad king across tons of stages, mini games, and modes as you wrestle to be the last jelly standing!
Dungeon Defenders: Awakened is co-op Tower Defense combined with epic Action RPG combat. You’re able to join forces with up to four players to take on a never-ending army of orcs, demons, and dragons! Are your defenses strong enough to save the world of Etheria?
A fresh take on top-down shooters with an emphasis on tactics that forces you to make split second decisions. Neutralize criminals, rescue civilians and defuse bombs in Single Player mode or Co-op. And remember - shooting first is not an option!
Time Warpers is the evolution of the popular incremental game Time Clickers. With features like gun customization, optional permadeath & co-op with friends, it combines a first person shooter with the seemingly endless progression & upgrades of a clicker game.
Fight the greatest battles in the STAR WARS universe any way you want to. The choice is yours.
Burnout Paradise Remastered provides the ultimate driving playground for you and your friends to play online. This remaster includes all add-ons from the Year of Paradise, including the Big Surf Island update, meticulously recreated and ready to wreck in 4K.
DIVE. DISCOVER. DIE. Crew a submarine with friends in We Need To Go Deeper - a 2-4-player cooperative submarine roguelike set in a Verne-inspired undersea universe.
In the midst of a site-wide containment breach, you must team up with other Class-D personnel to escape the underground, isolated facility while evading the dangerous anomalies that have breached containment.
Hello Neighbor Multiplayer. Secret Neighbor is a Multiplayer Social Horror Game where a group of intruders try to rescue their friend from the Neighbor's creepy basement. Only problem is one of the intruders is the Neighbor in disguise.