可以和朋友在线一起玩的免费开玩（Online Co-Op）游戏共 347 款，包括SCP: Secret Laboratory、Professional Fishing和AirMech。
全部游戏: 24
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.
Are you falling asleep with a rod? Never again! Professional Fishing will never let you fall asleep! Play an amazing fishing simulator and feel like a real angler! Create your own fishing club and compete with others!
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!
Explore the fantastical Talon Island in a thrilling fusion between a MOBA and Battle Royale game. Choose your Champion and master their unique abilities, loot for treasures alone or with a friend, and rise above the competition in a top-down action-fest. Only the best survive to the end!
Take on Duelists around the world with "Yu-Gi-Oh! Duel Links"! Step into a world that crosses dimensions and connects all Duelists. In Duel World, any location transforms into a Duel Field where heated Duels unfold!
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.
Immerse yourself in thrilling naval battles and assemble an armada of over 800 ships from the first half of the 20th century — from stealthy destroyers to gigantic battleships. Change the look of your ship, choose upgrades to suit your play style, and go into battle with other players!
This Long Term Strategy Game lets you take control of the armed forces of your nation. Become responsible for its military expansion, technological research and economic development. Form alliances and wage total war for global dominance on the battlefields of World War 3.
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!
Collect and craft thousands of pieces of loot to increase your power. Build your team by capturing monsters and bosses to fight at your side in old school, turn-based combat. Prove you’re the mightiest hero in the land by competing in the PvP arena, Raids, and weekly events for awesome prizes!
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.
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.
Codename CURE is a first person, co-operative zombie game with support for up to five players, providing dynamic, fast-paced zombie fragging with both objective, and survival-based missions.
Crossout Remastered - the postapocalyptic MMO action game where you can create a unique design for an armoured vehicle from dozens of parts and then drive it into multiplayer battles raging on land and in the skies alike.
Create your hero and dive into an epic 2D MMORPG! Explore a vast open world, conquer castles, battle in free-for-all PvP, team up in guilds, join Alliance wars, explore dungeons, and celebrate with fun in-game events!
Skillshot City is a chaotic battle royale with roguelite skill builds and infinite revives. Loot, shoot, cast and drive through a GTA-style city to level up wild skills and create clever combos on the fly. If you die, keep fighting outside the circle and try to revive before the final showdown!
建造防御设施、迎战一波波敌人，并一起培养英雄卡组。Dungeon Defenders II 是一款支持最多四人在线合作的免费游戏。
Lost in a frozen wasteland and split up from your partner inside an abandoned castle, the only possession you have left is a walkie-talkie with a familiar voice on the other end. Can the two of you find your way out in time?
Allegiance is a team-based multiplayer space combat sim that seamlessly combines first-person space combat with a top-down-view perspective, real time strategy, and real time tactics. Team commanders build bases, research technology, and coordinate players to execute a wide range of strategies.
NosTale is a free-to-play anime action MMORPG which takes you on an exciting journey through a world full of mystery with your friends. More than 30 specialist classes and tons of loyal pets provide plenty of excitement and variety in PvP, PvE and raids
Are you ready for a very special challenge? Then get ready to discover My Free Farm 2! This simulation is a captivating blend of farm and tycoon game. Bring in the harvest, keep animals and expand your property. Download My Free Farm 2 now!