可以和朋友在线一起玩的动作（Online Co-Op）游戏共 1,237 款，包括Nine Parchments、Codename CURE和Skillshot City。
全部游戏: 24
Runaway wizard apprentices, stolen spells, and no supervision. Blast, freeze and electrocute your way through a fairytale world in 1–4 player co-op, online or on the couch. Level up, collect staves and hats, and gather the Nine Parchments you need to complete your spellbook.
Codename CURE is a first person, co-operative zombie game with support for up to five players, providing dynamic, fast-paced zombie fragging with both objective, and survival-based missions.
Skillshot City is a chaotic battle royale with roguelite skill builds and infinite revives. Loot, shoot, cast and drive through a GTA-style city to level up wild skills and create clever combos on the fly. If you die, keep fighting outside the circle and try to revive before the final showdown!
Join the Chase! In LEGO® CITY Undercover, play as Chase McCain, a police officer who's been tasked with going undercover to hunt down the notorious – and recently escaped – criminal Rex Fury and putting an end to his city-wide crime wave.
20XX is a roguelike action platformer that you can play with a friend. Jump and shoot your way through ever-changing levels, collect awesome new powers, and battle mighty bosses in the name of saving the human race maybe!
Crossout Remastered - the postapocalyptic MMO action game where you can create a unique design for an armoured vehicle from dozens of parts and then drive it into multiplayer battles raging on land and in the skies alike.
Top-down zombie shooter with tower defense elements featuring up to 4 players local and online co-op. Build your base by day, defend it by night, put your skills to the test to stay alive as long as possible! Darkness is coming. How long can YOU survive?
It’s a punk rock apocalypse! Team up with your friends to lead embattled punk rock band Charlie Murder in their epic quest to save the world from rival death metalers Gore Quaffer and their legions of evil.
建造防御设施、迎战一波波敌人，并一起培养英雄卡组。Dungeon Defenders II 是一款支持最多四人在线合作的免费游戏。
Do you like shooting? Then arm yourself - the world of Bombix awaits you! You will find yourself in the shoes of a small but VERY dangerous fighter, gather together a team of thugs and show 'em all how to fight!
Lost in a frozen wasteland and split up from your partner inside an abandoned castle, the only possession you have left is a walkie-talkie with a familiar voice on the other end. Can the two of you find your way out in time?
In KILLING FLOOR 2, players descend into continental Europe after it has been overrun by horrific, murderous clones called Zeds that were created by rogue elements of the Horzine Corporation. 6-player Co-Op & 12-player VS Zed-slaughtering mayhem.
DRAGON BALL XENOVERSE 2 builds upon the highly popular DRAGON BALL XENOVERSE with enhanced graphics that will further immerse players into the largest and most detailed Dragon Ball world ever developed.
NosTale is a free-to-play anime action MMORPG which takes you on an exciting journey through a world full of mystery with your friends. More than 30 specialist classes and tons of loyal pets provide plenty of excitement and variety in PvP, PvE and raids
You are a Bigfoot hunter with an important mission: to put an end to rumours once and for all and prove to yourself that Bigfoot is not just a myth or an invention of the mind...
Allegiance is a team-based multiplayer space combat sim that seamlessly combines first-person space combat with a top-down-view perspective, real time strategy, and real time tactics. Team commanders build bases, research technology, and coordinate players to execute a wide range of strategies.
Absolver is an online multiplayer combat game where players are placed behind the mask of a Prospect under control of the Guides, the new rulers of the fallen Adal Empire, who will determine your worth in joining their elite corps of Absolvers.
Experience close-quarters battles in iconic WWII settings. Defend the line, storm the beach, torch the enemy, or use a radio to call in fire support. Day of Infamy is a teamwork-oriented shooter that will keep you on your toes and coming back for more with its diverse game modes and authentic arsenal.
Fight, Farm, Build and Explore Together in the standalone multiplayer expansion to the uncompromising wilderness survival game, Don't Starve.
Wage war against players from around the world with an unstoppable arsenal of 300+ powerful armored combat vehicles. Compete in PvP tank combat, complete co-op missions, and crush your enemies on breathtaking maps, from scorching deserts to neon-drenched urban jungles.
探索行星、推进剧情战役，与朋友共同建造家园。这是一款默认支持四人在线游玩的沙盒游戏，每位玩家都有自己的飞船。
Blow off steam and tank turrets in a free-to-play online 7v7 tank shooter! Drive hundreds of tanks, from museum classics to "did-that-ever-exist?" specials, in quick 5 to 7-minute brawls packed with metal mayhem. Play solo or team up with a friend and enjoy smooth action even on modest hardware!
Shoot, slice and surf on zombies by yourself or with friends. Fight overwhelming amounts of zombies and other monsters summoned by an evil wizard (ooOooOOOo spooky) in an early 1900s London.