《泰拉瑞亚》让每个世界都成为共同冒险
和朋友一起挖掘、建造，探索不断变化的世界。桌面版专用服务器默认提供 16 个玩家名额；搜集更好的装备，再一起挑战 Boss 和入侵事件。
1,249,418 篇评测中 96% 为好评当前玩家: 19,412US$9.99
在线合作：适合一起玩的游戏
可以和朋友在线一起玩的在线合作游戏共 2,835 款，包括Terraria、World War III: Black Gold和PAYDAY™ The Heist。
全部游戏: 24
World War III: Black Gold
Actual Armies. Actual Weapons. Actual Political Issues.World War III - Black Gold takes the player to the near future. The political crisis has been going on for months, leading to worldwide turmoil. A secret conference of the UN Central Geological Commission reveals that worldwide oil reserves have reached dangerously low levels: Oil...
263 篇评测中 60% 为好评当前玩家: 5US$6.99
PAYDAY™ The Heist
Take on the role of a hardened career criminal executing intense, dynamic heists in constant pursuit of the next “big score”
21,933 篇评测中 91% 为好评当前玩家: 73US$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。
21,907 篇评测中 86% 为好评当前玩家: 92US$29.99
DC Universe™ Online
DC Universe Online is a Free-to-Play, massive multiplayer online action game set in the popular DC Universe. Become one of a new breed of Heroes or Villains and wield incredible powers as you go to war with legendary characters such as Batman, Superman, Lex Luthor and The Joker.
22,118 篇评测中 79% 为好评当前玩家: 1,125免费
Portal 2
The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
392,586 篇评测中 97% 为好评当前玩家: 2,154US$9.99
Iron Brigade
Join The Mobile Trench Brigade and protect humanity from the evil Monovision menace!
917 篇评测中 86% 为好评当前玩家: 1US$14.99
Puzzle Pirates
Every activity in Puzzle Pirates is a uniquely fun puzzle: be it sailing, gunning, or hauling treasure, your own puzzling skill determines your success!
2,297 篇评测中 80% 为好评当前玩家: 337免费
Arma: Cold War Assault Remastered
The genre-defining military sim that began as Operation Flashpoint (2001), now a modernized, 64-bit, cross-platform build for Windows and Linux, with its engine released as open source. Over 2 million copies sold. The Cold War battlefield of Everon and Nogova, remastered for today's hardware.
2,423 篇评测中 88% 为好评当前玩家: 48US$9.99
Wargame: European Escalation
The New Fatal Error DLC includes a new 5-mission Operation and touch-screen controls.
2,608 篇评测中 75% 为好评当前玩家: 13US$9.99
Stronghold Kingdoms
A massively multiplayer grand strategy game, Stronghold Kingdoms is about forging alliances, political mind games, city-building and castle sieges with thousands of other players!
9,607 篇评测中 62% 为好评当前玩家: 370免费
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。
6,312 篇评测中 83% 为好评当前玩家: 18US$9.99
Demigod：与好友合作或进行 PvP
从 Demigod 的八名英雄中选择一位，在自定义对局中与好友迎战电脑对手，或争夺竞技场的控制权。
1,015 篇评测中 74% 为好评当前玩家: 10US$9.99
R.U.S.E.™
A one-of-a-kind real-time strategy game that allows players to bluff their enemies to lead their nation to victory. The Definitive Edition — includes all DLCs and Steam Deck support.
2,565 篇评测中 93% 为好评当前玩家: 333US$29.99
Kohan: Immortal Sovereigns
Kohan: Immortal Sovereigns is the first game in the award-winning real time strategy series. Awarded “RTS Game of the Year” by PC Gamer and Computer Games Magazine, Immortal Sovereigns is a real-time strategy game set in a fantasy world where you take on the role of an immortal known as the Kohan.
128 篇评测中 85% 为好评当前玩家: 3US$9.99
EVE Online
Over 20 years of legendary space battles! Explore a massive living universe of danger and opportunity in a challenging and highly rewarding space adventure. Fight, trade, build, and connect with a universe driven and shaped directly by players.
39,779 篇评测中 73% 为好评当前玩家: 5,652免费
RIFT
Dive into a world of epic adventure! Create your perfect hero thanks to a uniquely customizable class system. Collect, craft, and customize your gear. Go it alone or group up to challenge dungeons, raids, dynamic open-world content, and your fellow players.
11,667 篇评测中 74% 为好评当前玩家: 182免费
Arma 2: Operation Arrowhead
Three years after the conflict in Chernarus, portrayed in the original Arma 2, a new flashpoint explodes in the Green Sea Region. Coalition forces led by the US Army are deployed to Takistan to quickly restore peace and prevent further civilian casualties.
16,204 篇评测中 92% 为好评当前玩家: 221US$19.99
Left 4 Dead 2：四名幸存者，一条逃生路
在 Left 4 Dead 2 中，与最多三位好友突破感染者群，或在最多八人参与的对抗模式中迎战另一支队伍。
824,769 篇评测中 97% 为好评当前玩家: 28,391US$9.99
《Serious Sam HD》：在埃及展开合作枪战
最多16人在线合作闯过街机风格FPS战役，也可以启动Fusion 2017，与最多4人在本地分屏游玩。
7,424 篇评测中 91% 为好评当前玩家: 57
Altitude：横版飞行射击中的合作任务
和朋友一起游玩社区服务器 Alti+ Coop 的自定义合作地图，也可以在 Altitude 的标准模式中与其他队伍竞技。
1,947 篇评测中 91% 为好评当前玩家: 9免费
Trine Enchanted Edition：三位英雄，一场合作冒险
最多三位好友可在线或共享屏幕游玩，在15个童话关卡中结合法师召物、盗贼抓钩与骑士力量。
12,868 篇评测中 95% 为好评当前玩家: 43US$14.99
Total War: EMPIRE – Definitive Edition
Command the seas, control the land, forge a new nation, and conquer the globe.
21,463 篇评测中 88% 为好评当前玩家: 3,305