オンラインでみんなと遊べるアクション（Sci-fi）ゲーム521本。Risk of Rain Returns、Classic Marathon Infinity、Brotatoなど。
すべてのゲーム: 24
Carefully designed, beautifully remastered, and loaded with new ways to play—Risk of Rain is back and better than ever! Dive into the iconic roguelike full of unique loot combinations, enhanced with new Survivors, overhauled multiplayer, fan favorite content from Risk of Rain 2, and more!
From the team that brought you Aleph One, the classic sci-fi FPS Marathon Infinity from Bungie on Mac revived for modern hardware by the fan community.
Brotato is a top-down arena shooter roguelite where you play a potato wielding up to 6 weapons at a time to fight off hordes of aliens. Choose from a variety of traits and items to create unique builds and survive until help arrives.
Take control of an assortment of superb mechs and engage in thrilling combat with other enthusiasts on the same battlefield! In addition to original mecha, well-known IPs such as "Mazinger Z" and “Dancouga – Super Beast Machine God” also ready for the mecha war!
A new action game based on the concept of the ARMORED CORE series that uses the knowledge gained from FromSoftware's recent action game development.
From the team that brought you Aleph One, the classic sci-fi FPS Marathon from Bungie on Mac revived for modern hardware by the fan community.
Pilot a sword-swinging mech and a sharpshooting space frog at the same time in this bullet heaven roguelike. Throw empty shotguns, fire guns that shoot bees and build absurd combos across 20-minute runs: solo or in 2–4 player online co-op.
From the team that brought you Aleph One, the classic sci-fi FPS Marathon 2: Durandal from Bungie on Mac revived for modern hardware by the fan community.
Compete in a bloody fight to the finish in DEATHSPRINT 66, fusing high-speed on-foot racing with deadly obstacles and brutal abilities. Unleash your velocity, push limits, and claim glory like never before.
The legendary Contra series returns! This reimagining of the classic run-'n'-gun action game from the ‘80s features new stages, new enemies, new play mechanics, and co-op combat for up to 4 players!
Take back the Theed Royal Palace in this fast and furious lightsaber action game. You will have the power of the Force and your trusty lightsaber to help you ward off legions of battle droids, destroyer droids, assassins, and other creatures from Star Wars: The Phantom Menace.
The chaotic multiplayer hide-and-seek game. Possess seemingly harmless objects as Ghosts or chase them down as Hunters before the clock strikes midnight!
Barotrauma is a 2D co-op submarine simulator – in space, with survival horror and RPG elements. Steer your submarine, complete missions, fight monsters, fix leaks, operate machinery, man the guns and craft items, and stay alert: danger in Barotrauma doesn’t announce itself!
Discover the original co-op shooter-looter, crammed with new enhancements! As one of 4 trigger-happy mercenaries with RPG progression, equip bazillions of guns to take on the desert planet Pandora.
The great exploits of the Ancient Rus in the war with the lizards. Immerse yourself in the world of Hyperborea and defeat hordes of Lizards and other unholy who encroached on holy places Ancestors. Choose a blessed hero and go save the world from the green plague.
SENTRY is an action-defense first person shooter where you defend your spaceship against invading aliens. Plot an escape route through hostile space and battle the enemy across your vessel with the support of traps, turrets and environmental destruction.
Download VAIL and experience the #1, highest-rated VR shooter, with precision-crafted gunplay, stunning visuals, unparalleled combat, and a constantly expanding world of modes, maps, and community
Plan your own alien invasion and harvest humans as the iconic Killer Klowns, or gather a team of survivors to fight the extraterrestrial threat, in a game based on the ‘80s cult classic movie. Welcome to a new, craazzy take on the asymmetrical multiplayer horror experience!
Experience the award-winning space saga. Travel to hyperspace, discover alien worlds, and meet an eclectic cast of characters. Find out what happened after the Ur-Quan invasion. And if the war still rages, fight for Earth and the Alliance of Free Stars!
Hey Lightcatchers! Are you ready for massive 60-player shootouts? Enjoy fast-paced hero shooter action in Farlight 84!
Jump, shoot, and slash your way through 30XX, the roguelike action platformer you can play with a friend! Explore lush, ever-changing worlds that mix precise platforming with fevered combat. Destroy fearsome Guardians. Master unique Powers. Rediscover the thousand years we've lost.
The spiritual successor to Freelancer with a Lovecraftian, sandbox RPG twist. Explore a vast handmade universe with mod support and PvP/co-op multiplayer. You're going to need a bigger ship.
Brazen Blaze is a 3v3 Smack & Shoot VR Action game with emphasis on close quarter melee combat! Choose from a range of unique Runners each equipped with individual skills meant to destroy whatever blocks your path to sure victory!
Command Mobile Outpost and take XEN Firearm to venture deep into the Signet surveillance off-limit area. Collect unique Weapon Units. Amp up the firepower of the Outpost that fights with you. This is an FTD game - FPS, Tower Defense, Base Building and much more all at the same time.