可以和朋友在线一起玩的免费开玩（2D）游戏共 285 款，包括Relic Hunters Zero: Remix、Teeworlds和Mitos.is: The Game。
全部游戏: 24
Relic Hunters Zero: Remix is a remaster of the FREE 1 million player hit game about blasting evil space ducks and turtles with tiny cute guns. It’s fast, it’s tactical, and feels deliciously smooth to play. Unlock new weapons, characters and relics to defeat the Ducan Commander!
Teeworlds is a free online multiplayer game, available for all major operating systems. Battle with up to 16 players in a variety of game modes, including Team Deathmatch and Capture The Flag. You can even design your own maps!
Step into the microscopic world of Mitos.is! Eat or be eaten—become the ultimate cell in a highly addictive multiplayer game. Diverse modes, daily tournaments, guilds, and gear await! The BEST game of 2015 is back!
Zezenia is a free to play 2D MMORPG with intense PvP wars & PvE combat. Choose from three classes and seven subclasses to discover a large map with four continents, hundreds of quests, a random equipment system & more.
RPG MO is a nostalgic MMORPG that reminds of Ultima and Runescape Classic.
THE legendary free online multiplayer space shooter! Addictive, fast-paced, easy to learn, and impossible to master.
Battle other 2D stickfigures online while jumping around like a lunatic and getting blown up into smithereens. With over 70 weapons, Boring Man is the most chaotic and hilarious 2D online shooter on the internet.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
Battle Nations is back! Build your empire and lead your armies to victory! Choose from traditional troops and vehicles or unleash exotic forces like mammoths, velociraptors, sandworms, and futuristic plasma units!
Delve into classic turn-based strategy gaming with elements of table top miniatures, fantasy RPG and TCG style gameplay all wrapped into one.
Aberoth is a fantasy massively multiplayer online role playing game with charming retro graphics and tons of freedom.
Elsword is a free-to-play, online action RPG that uses classic side-scrolling game mechanics in an immersive manga inspired world.
Invite a friend to explore the strange, yet beautiful world of darkness and light in Shadow Puppeteer, an award-winning, local co-op adventure.
Collect Marvel characters and upgrade your unstoppable squad in this epic Super Hero Puzzle RPG! Fight on the tactical Match-3 board where every move is crucial, and master head-to-head PvP tournaments alongside high-stakes events all year round!
一起完成短篇合作挑战，或与朋友在团队战中并肩建造。在 King Arthur’s Gold 里，城墙和计划一样容易崩塌。
和朋友一起进入 Realm of the Mad God Exalt，参加人潮涌动的在线首领战、探索分支地牢，并从19个职业中选择。角色阵亡后会永久消失。
Every activity in Puzzle Pirates is a uniquely fun puzzle: be it sailing, gunning, or hauling treasure, your own puzzling skill determines your success!
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。
The Two of Us is a 2D Co-op Platformer that has a strong emphasis on working together. You will be greeted with various puzzle levels where you must work in conjunction with your friend to navigate the level.
Never Split the Party is an ultra social rogue-like! You're one of four adventurers joining together to explore a procedurally generated dungeon, amass powerful upgrades, and cooperate with your fellow adventures to conquer and crush the evil dungeon champions!
The classic web game, reborn! Enjoy this remaster in glorious 4k resolution! Follow this frog on its arcade action adventure through swarm of bugs and beyond! Purchase the hat DLC for the ultimate experience, if you want to eat bugs while wearing a hat!
Deadswitch 3 is a fast-paced 2D multiplayer shooter. Experience action-packed combat with hundreds of weapons and multiple solo and team-based game modes.
Face the varied challenges of the Machine God Zir in ARENA, a standalone expansion for Synthetik: Legion Rising! Leverage the next level in gun-play and experiment with powerful tech in varied action packed Arenas!