オンラインでみんなと遊べるアクション（Singleplayer）ゲーム1,887本。Overcooked、Party Panic、Enter the Gungeonなど。
すべてのゲーム: 24
Overcooked is a chaotic couch co-op cooking game for one to four players. Working as a team, you and your fellow chefs must prepare, cook and serve up a variety of tasty orders before the baying customers storm out in a huff.
Party Panic is an online and local-multiplayer party game. Compete against your friends in the all new board game, play 30+ rapid fire minigames, race through the brutal Gauntlet, or complete the challenges on Trophy Island. There is even a built in drinking game! You'll laugh, you'll cry, it's stupid.
Enter the Gungeon is a bullet hell dungeon crawler following a band of misfits seeking to shoot, loot, dodge roll and table-flip their way to personal absolution by reaching the legendary Gungeon’s ultimate treasure: the gun that can kill the past.
N++ is a fast-paced, momentum-based platformer about darting around obstacles, narrowly evading enemies and collecting gold in a beautiful minimalist landscape.
Shift Happens is a cooperative platformer for two. You and a friend shift your mass, throw each other and puzzle your way through four stages of stylized imaginary worlds. Including the occasional backstabbing and taunting. Play with a friend on a couch, online or even special singleplayer levels.
Join the fight and command your worm warriors into battle in the iconic 2D arcade artillery shooter where serious strategy and silly weaponry decide who swims or sinks.
The evil I.N.K.T. Corporation has declared 'Color is a Crime!' and leeched Chroma City of all its beauty and interest. The race to rescue Chroma City has just begun, and only de Blob can save the world from a black-and-white future with his unique abilities to color the world back to life.
Frag like it’s 1996 – this time with even more asses to kick! Join the world’s greatest action hero in Duke Nukem 3D: 20th Anniversary World Tour as he saves Earth once again, kicking alien ass and saving babes across the globe along the way.
Go behind enemy lines with the ultimate modern military shooter. Play as an American sniper dropped in Georgia, near Russian border. Choose your own path to accomplish your missions across an unforgiving open world.
最大3人の友達と荒廃した世界を冒険し、マスタリーを組み合わせてモンスターと戦いましょう。戦利品は個別にも共有にもできます。
Yooka-Laylee is an all-new open-world platformer from genre veterans Playtonic! Explore huge, beautiful worlds, meet an unforgettable cast of characters and horde a vault-load of collectibles as buddy-duo Yooka and Laylee embark on an epic adventure to thwart corporate creep Capital B!
Now reimagined and expanded in the new Mormo's Curse update, The Swords of Ditto is a roguelite action RPG that creates a unique adventure for each new hero of legend in the relentless fight against the evil Mormo.
Aragami is a third person stealth game that casts you as an undead assassin with the power to control the shadows. Teleport to any shadow, become invisible, materialize weapons or even summon a shadow dragon to infiltrate the enemy ranks and dispose of your targets.
Brain / Out is a multiplayer shooter with a nostalgic post-Soviet feel. Experience dynamic battles and exterminate your enemies with a large arsenal of modern weaponry. Lock'n'load!
Nex Machina is an intense arcade style twin-stick shooter from Housemarque. Taking hints from both Robotron and Smash TV, Nex Machina focuses on pure action, voxel destruction and competition in the distant, cablepunk themed future.
Lost Castle is an action RPG beat'em up with roguelike elements and randomized dungeons for up to four players online and local!
Starring a cast of beloved Disney characters, The Disney Afternoon Collection takes you back to a golden era of gaming and afternoons filled with adventure. All six classic games feature new and improved visuals and include filtering options that replicate a retro look and feel.
Lode Runner Legacy is the latest edition in the popular Lode Runner series. Players control “Runner” to recover stolen gold while avoiding enemies and minefields. Enjoy the ingenious balance of puzzle and action gameplay, an updated Voxel visual style and powerful game editors. Ver.2.0 Update is out now!
Experience the thrills of a fast-paced single and multiplayer Parkour game. Join the Rebellion and deride the security forces of an anti-leisure tyranny. Rise up to the many challenges of a futuristic Open World. Assemble your team, enhance your gear and perform incredible tricks and combos.
Cut-throat multiplayer running game that pits 4 players against each other, locally and/or online. Run, jump, swing around, and use devious weapons and pick-ups to knock opponents off-screen! One of the most competitive games you'll ever play.
The legendary bullet-hell shoot-’em-up series has come to Steam! DoDonPachi is ressurected after a Blissful Death with enough modes to satisfy the beginner and the expert player alike. Tonight we dine in bullet hell!
Get ready to enter a new era of physics platforming. Polyball is a classic ball rolling game in the vein of Super Monkey Ball, Marble Madness, and Marble Blast - while taking cues from games such as the Sonic series, Trackmania, and Mario Kart.
Slayers! Go forth and eradicate the Oni menace! Experience the latest hunting action game featuring a dynamic targeted destruction system! The latest installment in the hunting action series "Toukiden".
Subsistence is a sandbox, first person, solo or co-op, PvE open-world survival game. Struggle through changing seasons to build a base, develop technology and gear-up in the hostile environment. Defend yourself from wildlife, the elements and AI hunters (who also build bases in the world).