可以和朋友在线一起玩的动作（2D）游戏共 841 款，包括Forts、CS2D和Arcana Heart 3 LOVEMAX SIXSTARS!!!!!! XTEND。
全部游戏: 24
Unleash your creativity and strategic prowess in Forts, the exhilarating physics-based RTS! Design, construct, and customize imposing fortresses, bristling with devastating firepower, and blast your opponent’s buildings to rubble!
CS2D is a free fast-paced top-down multiplayer shooter. Featuring many different game modes, a built-in map editor and much more.
New playable character "Minori Amanohara" and new Arcana "Ichor" the Blood joins the battle in "Arcana Heart 3 LOVEMAX SIXSTARS!!!!!!"! More new characters to join in future updates!
Fight’N Rage is a brand new old-school side-scroller beat’em up. Inspired by the classics from the “golden age”, and with an art style that mimics the aesthetic from the 90's arcade gems, this game pays homage to all classic gameplay features that makes this genre one of the best from its time!
Fun, fast paced online multiplayer arcade space shooter. Take control of your spaceship, mine asteroids, increase your stats, upgrade to different types of spaceships with improved stats and weapons. Fight against other players and collect their gems.
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!
Marvel and Capcom join forces to deliver the most frenetic 3 vs 3 tag battles ever with Ultimate Marvel VS Capcom 3. This release comes fully loaded, including all previous DLC, Marvel VS. Capcom : Official Complete Works.
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.
Shoot rubber ducky arrows, pound enemies with a rhino hammer, and help Beethoven get his groove back in the last totally normal high school themed RPGvania you’ll ever want.
Crawl is the local multiplayer dungeon crawler where your friends control the monsters! Battle through dungeons and power up your hero - if a friend kills you they take your place and it’s their turn to crawl. It's a race to gain enough XP and loot to take on the hulking final boss!
Take on wild beasts, ruthless soldiers, and ancient gods in this 2D Action-Platformer inspired by Tower-Defense combat.
The followup to 2009's Dead Samurai, The Dishwasher: Vampire Smile is a combo-fueled, fast-paced, stylistic 2D action platformer that features the series' staple gritty, graphic novel-inspired art style, built on a new engine that allows for an even more visually gruesome experience.
今度の異変は二人で一人？ いまだ煽り続ける都市伝説が新たな異変を引き起こす 今度の異変は二人が一人！？ならば二人で解決するしかない！
The memorable adventure of Randi, Primm and Popoi is reborn as Secret of Mana! Originally released in 1993, Secret of Mana is by far the most popular title in the “Mana” series and has now undergone a much-awaited full 3D remake!
Caveblazers is a challenging and brutal roguelike platformer. Journey into a mysterious cave, fighting orcs and goblins with an abundance of weapons and magical items! Make friends along the way, then watch in despair as they are crushed in to a bloody pulp under a troll's fist.
Astonishing 3D cell animations and overwhelming content volume, the next-generation fighting game "GUILTY GEAR Xrd REV 2" is now out on Steam! Total cast of 25 unique characters, and tons of game modes, get ready to ROCK!
Lead the revolution with an army of flamethrowing Boars, mustard gas-lobbing Skunks, and paratrooper-puking Owls. Tooth and Tail is a Real-Time-Strategy game featuring Single Player, Online Competitive Play, Split Screen, Replays, and more. Build a base, lead your army, eat your enemies!
Sundered is a chaotic hand-drawn metroidvania where you resist or embrace ancient eldritch powers, a challenging and unique take on a classic genre from the creators of Jotun, now with local co-op!
The rules are simple. Reach the other side and kill anyone that stands in your way. Deftly parry and rend their throats, riddle their bowels with arrows, or squish their brains between your toes. The wurm cares not for chivalry.
The tag-team fighting game based on the original "Umineko When They Cry" series, finally released on Steam, in English and with improved rollback netplay!
Wild Guns Reloaded is a fast-paced arcade-style shooter, mixing the Wild West with steampunk. Play as Clint, Annie, Doris, or Bullet the dog with his sentry drone. Grab some friends and play together for some four player action!
Fight, Farm, Build and Explore Together in the standalone multiplayer expansion to the uncompromising wilderness survival game, Don't Starve.
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。
Super Hydorah is a nonlinear horizontal shoot’ em up designed to offer a challenging experience, sublimating the richness of traditional shmup classics. Face the menace of the Meroptians aboard the Delta Lance, alone or with your friends in this game with direct action and nostalgic art.