DG2：Defense Grid 2，让塔防成为双人共享谜题
和一位朋友并肩守护能量核心，在全面协作的 Doubles 与更具竞争性的 Coordinated Defense 之间选择，可在线或同机游玩。
2,711 篇评测中 85% 为好评当前玩家: 52US$9.99
独立（Sci-fi）：适合一起玩的游戏
可以和朋友在线一起玩的独立（Sci-fi）游戏共 388 款，包括DG2: Defense Grid 2、Creeper World 3: Arc Eternal和Crimsonland。
全部游戏: 24
Creeper World 3: Arc Eternal
Creeper World 3 is what happens when cellular automata takes over a strategy simulation. Instead of discrete units that attack your base, a fluid-like substance spreads over the terraformable terrain. Your base, your weapons, your strategy... you must adapt them all.
4,110 篇评测中 96% 为好评当前玩家: 181US$14.99
Crimsonland
Thousands of aliens, giant spiders, mutant lizards, and more are on the attack - can you survive the onslaught? Crimsonland is a top-down shooter with a touch of RPG. Unlock over 30 weapons and over 50 perks from quirky to brutal. Complete the quest and show your skills in five survival modes.
2,112 篇评测中 92% 为好评当前玩家: 24US$13.99
Original War：和朋友一起指挥一支RTS军队
在Original War中与朋友进行在线或局域网团队对战。专业兵种、基地建设和地图规则让这款复古RTS成为需要共同经营的战场。
1,820 篇评测中 94% 为好评当前玩家: 44US$9.99
Ikaruga
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!
2,215 篇评测中 94% 为好评当前玩家: 8US$9.99
Infinity Wars: Animated Trading Card Game
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!
3,470 篇评测中 77% 为好评当前玩家: 4免费
Viscera Cleanup Detail: Santa's Rampage
Tragedy! Santa; the toy giving folk-hero, and purveyor of fine Christmas goods, has had enough. Endless requests from greedy children wanting more and more every year, tax increases, pressure from elf unions, bills, reindeer!
4,549 篇评测中 91% 为好评当前玩家: 11US$2.49
在 StarMade 中共同建造一片星系
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。
2,200 篇评测中 66% 为好评当前玩家: 7US$14.99
Super Motherload
Set on Mars in an alternate Cold-War era, Super Motherload is a 1 to 4-player couch co-op digging adventure with storyline by Image Comics' Kurtis Wiebe, a fully voiced cast of Soviet and American characters, and a procedurally-generated world that changes each time you play.
784 篇评测中 77% 为好评当前玩家: 5US$14.99
Signs of Life
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.
717 篇评测中 76% 为好评当前玩家: 12US$14.99
《Sanctum 2》：先建防线，再加入战斗
《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。
7,460 篇评测中 91% 为好评当前玩家: 16US$14.99
Gunpoint
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.
10,279 篇评测中 97% 为好评当前玩家: 4US$9.99
ORION: Prelude：与伙伴并肩对抗恐龙大军
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。
19,055 篇评测中 76% 为好评当前玩家: 32US$9.99
Natural Selection 2
A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!
8,647 篇评测中 85% 为好评当前玩家: 142US$4.99
Revolution Ace
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.
1,479 篇评测中 70% 为好评当前玩家: 1US$4.99
Sins of a Solar Empire: Rebellion：与好友共治星海
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。
10,258 篇评测中 93% 为好评当前玩家: 314US$19.99
Awesomenauts：把MOBA变成2D团队乱斗
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。
11,825 篇评测中 84% 为好评当前玩家: 69US$19.99
Space Hulk (Classic)
The legendary Space Hulk returns in this epic turn based strategy game. Set in the Warhammer 40,000 universe, an intriguing story of legendary battles and heroic actions unfolds.
1,579 篇评测中 70% 为好评当前玩家: 3US$11.99
Serious Sam II：和朋友一起横扫怪物大军
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。
12,066 篇评测中 89% 为好评当前玩家: 140US$9.99
Serious Sam 3: BFE与伙伴并肩迎战外星狂潮
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。
21,904 篇评测中 86% 为好评当前玩家: 113US$29.99
Cortex Command
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!
2,002 篇评测中 82% 为好评当前玩家: 2US$19.99
E.Y.E: Divine Cybermancy 的奇异合作任务
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。
6,310 篇评测中 83% 为好评当前玩家: 17US$9.99
Planets Under Attack
Play as humans or robots in a brand new sci-fi strategy adventure! Travel into the far reaches of space, through cleverly designed star constellations and variable game modes, conquering enemy planets using 15 combinable technologies.
319 篇评测中 63% 为好评当前玩家: 3US$2.39