可以和朋友在线一起玩的动作（Sci-fi）游戏共 522 款，包括Infinity Wars: Animated Trading Card Game、Saints Row IV: Re-Elected和StarMade。
全部游戏: 24
Outplay your opponent with simultaneous turns and commander-driven deck-building in a fully free-to-play PvP experience. Build your deck from 1000+ cards across 8 unique factions, and face opponents on a truly level playing field. In Infinity Wars, skill is the only factor that determines victory!
Experience the insane antics of Saints Row IV. The Saints have gone from the Penthouse to the White House - but Earth has been invaded and it’s up to you to save it with an arsenal of superpowers and strange weapons, in the wildest open world game ever.
在 StarMade 的太空体素沙盒中，与朋友建造飞船、空间站和势力。在程序生成的宇宙里自定目标，通过服务器进行合作或 PvP。
Awaken as an unstoppable warrior and battle alongside your friends in this story-driven free-to-play online action game
Signs of Life is a sci-fi survival sandbox platformer with a combination of procedurally generated and hand-crafted content. You'll explore mysterious locations, mine blocks for resources, and meet strange (and some familiar) creatures, some of which don't even want to kill you and eat your corpse.
《Sanctum 2》把塔防建造与第一人称射击结合起来，支持最多四人在线合作战役。你和朋友要守护产氧核心，布置角色装备，并可在完成战役后继续挑战生存模式。
Gunpoint is a stealth puzzle game that lets you rewire its levels to trick people. You play a freelance spy who takes jobs from his clients to break into high security buildings and steal sensitive data.
Experience two unique adventures featuring both long-time heroes and new and returning villains as they battle for the fate of the world!
In PixelJunk™ Shooter, you must pilot your spacecraft through a range of cavernous environments in a bid to save the scientists trapped underground. Making your way through the game will rely on your keen sense of observation and the ability to manipulate your surroundings.
PlanetSide 2 is an all-out planetary war, where thousands of players battle as one across enormous continents. Utilize infantry, ground and air vehicles, and teamwork to destroy your enemies in this revolutionary first-person shooter on a massive scale.
守住发电机，在每波敌人之间购买强化，并邀请最多四位好友加入 ORION: Prelude 原版的五人合作模式。
A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!
A deep, tactical shoot'em up. With every takedown, you’ll earn cash and xp to upgrade your ship and unlock new abilities. Online and local co-op. Unique versus mode. Realistic physics and water simulation.
多人模式面向最多十名玩家，包含互联网和 LAN 合作及 PvP 选项；与好友共同建设帝国、对抗 AI 势力，并在六个派系和多种胜利目标之间选择。
和最多两位朋友组队，体验3对3平台动作MOBA，沿着机器人兵线推进并摧毁对手基地。
Join The Mobile Trench Brigade and protect humanity from the evil Monovision menace!
Apogee Software and Interceptor Entertainment proudly present the rebirth of the cult-classic first-person shooter, “Rise of the Triad”. Bigger, better and more ludicrous than ever before.
在线或通过 LAN 与朋友并肩挑战色彩鲜艳、武器丰富的 FPS 战役，也可以切换到对战模式。
在Serious Sam 3: BFE的埃及战役中合作作战：线上最多16人，或本地分屏最多4人。
Choose between different factions, with their own set of expendable soldiers, mechas, and weapons. Protect your brain, mine gold, and destroy the enemy cortex in his bunker complex!
The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
LEGO Star Wars III: The Clone Wars will allow fans to explore endlessly and laugh their way through the Star Wars galaxy in the most humorous, accessible and action-packed LEGO game to date.
和最多三位朋友踏入谜团重重的赛博朋克战役，在枪战、黑客入侵、灵能与角色成长之间切换。