可以和朋友在线一起玩的动作（Difficult）游戏共 446 款，包括GUILTY GEAR 2 -OVERTURE-、Assault Android Cactus+和Bloons TD 5。
全部游戏: 24
The ultimate melee action [GUILTY GEAR 2 -OVERTURE-] is now on Steam!! Pushing [Gameplay] and [Entertainment] to the extremes, with a splash of [Competitiveness] -- That's GUILTY GEAR 2 for you.
Assault Android Cactus is an intense arcade style twin stick shooter - pick from one of nine unique synthetic heroines and blast your way through overwhelming robots hordes to save the ship from its own workforce. Supports single player and local co-op game modes.
Five-star tower defense with unrivaled depth and replayability. The Bloons are back in full HD glory and this time they mean business! Build awesome towers, choose your favorite upgrades, hire new Special Agents, and pop every last invading Bloon in the most popular tower defense series in history.
Rampage Knights is a cooperative beat 'em up game mixed up with randomized dungeon crawling and exploration, which you can play alone or with a friend online.
With BADLAND: Game of the Year Edition, experience the multi-award-winning action adventure like never before - redesigned for Steam.
The world’s greatest fighting game evolves to a whole new level with Ultra Street Fighter IV.
在 Door Kickers 的双人在线合作中与好友规划 SWAT 突入路线，再看实时战况如何考验你们的计划。
Men of War: Assault Squad 2 expands the real-time tactics series with new skirmish missions, massive multiplayer battles, enhanced visuals, improved AI, and full Direct Control. Command five factions across 65 maps, 250 vehicles, and 200 soldiers in one of the most detailed WWII RTS experiences.
Shovel Knight: Treasure Trove is the complete Shovel Knight collection, containing all 5 games in the epic saga! Dig, blast, slash, and bash your way through a fantastical, 8-bit inspired world of pixel-perfect platforming, memorable characters, and world-class action-adventure gameplay.
Experience the full evolution of the award-winning Geometry Wars franchise and battle through waves of enemies on 3D grids in this frenetic arcade shooter!
The definitive version of the smash-hit Metroidvania-style action-platformer, Guacamelee! STCE adds new levels, powers, challenges, and refinements to the sprawling, ridiculous, Mexican-inspired adventure of the original Guacamelee! Gold Edition.
“METAL SLUG X”, one of the most highly praised titles in the series among Metal Slug fans for its refined balance and game volume, heads out to the Steam gaming platform!
"I Am You From The Future! No Time To Explain, Follow m-OH CHRIST!" Chase your future self through time and alternate realities while fighting giant monsters, collecting hats, and eating cake! No Time To Explain Remastered is the remake of tinyBuild's debut game. Now with multiplayer!
Screencheat is a ridiculous competitive split-screen first-person shooter where everyone is invisible, so players are forced to look at each other’s screens to win. Supporting both local and online multiplayer, combat in Screencheat is fast and furious with a wide variety of one-hit kill weapons.
Toribash is an innovative free-to-play online turn-based fighting game where you’re able to design your own moves. Complete control over character's body, hundreds of game mods and bloody mess with full body dismemberment - you've never been able to annihilate your enemies like that before!
Split/Second is an intense action racing game set within a reality TV show. Competitors vie to be the first to the finish line in a set rigged to blow. Players don’t just collide with other vehicles to knock them from the track, but can also trigger devastating events that alter the race dynamics.
Inspired by the Disney•Pixar animated film, Cars 2: The Video Game lets players jump into the Cars 2 universe with some of their favorite Cars personalities in exotic locations around the globe.
TowerFall Ascension is the definitive version of the hit archery combat game. Inspired by classics from the golden age of couch multiplayer, it's a 4-player local party game centering around hilarious, intense versus matches. The core mechanics are simple and accessible, but hard to master and combat is fierce.
Octodad: Dadliest Catch is a game about destruction, deception, and fatherhood. The player controls Octodad, a dapper octopus masquerading as a human, as he goes about his life. Octodad's existence is a constant struggle, as he must master mundane tasks with his unwieldy boneless tentacles while simultaneously keeping his cephalopodan...
“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!
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!
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.