可以和朋友在线一起玩的免费开玩（Co-op）游戏共 357 款，包括Supremacy: 1914、Infected Shelter和Killer Queen Black。
全部游戏: 24
Take over the control of one of the mighty nations during the times of World War 1 in the biggest WW1 strategy game of all time. Conquer provinces, forge alliances and build up your economy in real-time on persistent maps. Build experimental weapons of World War 1 and become the one true superpower!
Infected Shelter is an ultra-violent rogue-lite post-apocalyptic beat'em up. Singleplayer and co-op for up to four players.
Killer Queen Black is a fast-paced, team-based action strategy game where two teams battle for victory in a frantic arcade arena. Coordinate with your queen and workers to outmaneuver the enemy, riding snails, collecting berries, and fighting for military dominance across multiple win conditions.
BLOCKADE Classic! First Person Shooter in an editable procedural cubic world. A large arsenal of weapons, 4 teams at the same time and up to 32 players on one map. A large number of game modes!
Adventure awaits you and your friends in the world of Ylands! Gather resources, craft tools, construct anything and everything, and explore the lands! Build a ship and set sail, encountering mythical animals, a wide variety of sea-life, enemies of all kinds and much more!
A unique space strategy game where thousands of players participate in one shared galaxy.
Procedural cubic 3D-shooter in the best traditions of the genre. The game is a rich cocktail consisting of the most popular and functional gaming solutions. Customization of characters, opening cases and improving the existing arsenal — all this is available in the game now!
Grab your balloon crossbow and trusty inflatable hammer, because things are about to get wobbly! Be the last weirdo standing in the world-leading physics-based Battle Royale game.
Paladins is the ultimate fantasy team-based shooter experience, with over 50 customizable Champions fighting in 5v5 action across a diverse Realm of modes and maps!
With 100+ truly unique units, Zero-K is an RTS of freedom and creativity, tempered by a decade of refinement. Sculpt land into a castle and throw invaders off it with a Jugglenaut. Explore a massive campaign, solo or co-op. Hop online for epic 32 player battles or fast paced 1v1, on 100s of maps.
Albion Online is a fantasy sandbox MMORPG featuring a player-driven economy, classless combat system, and intense PvP battles. Explore a vast open world full of danger and opportunity. Grow your wealth, forge alliances, and leave your mark on the world of Albion.
Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape.
AirMech® Strike is a fast paced Action-RTS game that can be played solo, coop, or competitively online. Earn Kudos and Experience in battle and unlock a wide collection of AirMechs and Units while you practice the perfect strategy to emerge victorious!
Build a pirate empire & explore the open seas in this exciting strategy game!
Unturned is an open-world zombie survival sandbox game. As one of the few not yet turned, you must fight to remain among the living.
Start your heroic saga today in a world full of magic and excitement: Choose your race, build a home and discover the fantastic world of Taborea in the classic free-to-play MMO!
"KurtzPel is an anime-styled, action battle game from a third-person perspective. Players can battle it out in both PvP and PvE mission-based battle modes with massive boss monsters. Players utilize Karmas (the method used to indicate weapon and class types) when charging into battle. Each character gets to use two types of Karmas.
An epic platform fighter for up to 8 players online or local. Try casual free-for-alls, ranked matches, or invite friends to a private room. And it's free! Play cross-platform with millions of players on PlayStation, Xbox, Nintendo Switch, iOS, Android & Steam! Frequent updates. Over sixty Legends.
Fishing Planet® is a highly realistic first-person online multiplayer fishing simulator. Developed by avid fishing enthusiasts to bring you the full thrill of actual angling on your PC. Free-to-Play and just a download away!
Play football in first person view and develop your own tactics and tricks. Play with up to 9 of your friends or join alone. No Pay2Win!
Purge the undead! Intense action-shooter with deep rpg elements, including upgradeable guns and armor, unique class skills, and class special abilities. Entire game can be played single player or as a 4-player online co-op game, including PvP events like Last Man Standing.
Real Pool 3D (Poolians) is one of the best online pool games. Play against the computer or real players all over the world! It supports 8 different types of pool games and team play mode.
Dead Maze is a 2D MMO game set in a destroyed contemporary world, filled with zombies. Explore the world, scavenge and craft as many items as possible, to survive the hostile environment and upgrade your gear and camp as you go.
CS2D is a free fast-paced top-down multiplayer shooter. Featuring many different game modes, a built-in map editor and much more.