可以和朋友在线一起玩的免费开玩（Singleplayer）游戏共 413 款，包括Origins Trading Card Game、CPM 2和Electoral Carnage。
全部游戏: 24
Outplay rivals in a fast PvP card game where both players move at once. Adapt your strategy and battle for three of 100+ rotating locations. Build decks with reimagined legends like Robin Hood and Mulan. Every competitive card is free. Rip packs for rare, limited-edition variants to trade on Steam.
Open-world racing sandbox with cross-platform multiplayer. Complete parking challenges, drift, and participate in races: drag, rally, circuit, and Drift. Tune cars and organize car meets with friends.
Electoral Carnage is an absurd 2D fighting game featuring America's most famous (and infamous) politicians. If you don't download it you hate America. Also JFK can assassinate himself. What more do you need to know?
Aniimo is a free-to-play, next-gen creature-catching open-world RPG. Explore the vast continent of Idyll, Twine with unique Aniimo, unlock new abilities. Travel to a sky-floating metropolis, meet other Pathfinders, and battle in exciting competitions. Choose your Aniimo and begin your epic journey!
NTE is a supernatural urban open-world RPG developed by Hotta Studio. Your story begins in Hethereau as an unlicensed anomaly hunter. Team up with a diverse cast of companions, each with unique abilities, to unravel the city's mysteries.
Gladio Mori is a physics-driven gladiator fighting game with no health bars. Stab on arteries, pierce vital organs and cut off limbs. Build your own movesets, paint your fighter and battle friends online with cross-play.
LOST & FOUND is a free to play dynamic sorting game. Match forms to the right items and build your own warehouse, or compete with your friends in multiplayer mode after your shift is over.
MoSimulator is a robotics simulation game with an arcade feel that lets players mod in their own robots. Experience the excitement of competitive student robotics in a fun, accessible format where you can bring your own robot designs to life and compete in simulated matches.
Move fast and shoot fast in Cyberfrags '69. Double jump, wall-run, and blast your way to victory in intense PvP and Co-Op, or play as Cyber-Frank as he slaughters the Cyber-Nazis invading his home!
Farm RPG is a menu based farming RPG/MMO. Build your farm, grow crops, fish, craft, and explore. Unlock a variety of exciting daily activities as you progress. Engage with helpful townsfolk and collaborate with fellow players in a vibrant community for trading and teamwork.
“觀滄海，望神州，彈指寰宇定九州” 《三國觀滄海》是一款以三國亂世為舞臺的國風水墨策略戰棋RPG。你將置身章回劇本之中，親曆英雄興亡；亦將在格子戰場上調兵遣將，以走位、地形與兵種博弈奪取勝勢。在首個推出的劇本《魏武揮鞭》中，你將以曹操爲第一視角，走過諸侯會盟、挾天子以令諸侯、官渡爭鋒等關鍵節點——用謀略與決斷，寫下屬于你的亂世篇章。
A casual companion that lives on your Windows desktop. Strike the woodfish to earn Merit, collect skins, open chests, complete collections and crafting, and play online with up to 3 Steam friends.
与最多四位好友探索开放世界、挑战首领和部分团队活动。主线故事以单人体验为主，因此合作冒险有明确边界。
Stream Racer is a racing game for Twitch.tv streamers. Build your own tracks, host your own races, stream it on Twitch.tv and have your viewers join you. Engage more with your viewers by giving them a racing car on your stream. Get ready for a hilariously chaotic time for your viewers and you!
Relic Arena is an 8-player free-to-play autobattler. Equip heroes with relics and build game-breaking combos, led by legendary historical figures.
Save patients with your rhythm mastery! Rhythm Doctor is a rhythm game where you heal patients by defibrillating in time to their heartbeats. Learn each patient's unique heartbeat and defeat boss viruses trying to sabotage your rhythm, all set to heart-pumping, soul-soothing music.
Codename CURE II is a co-operative first person shooter set in the aftermath of a zombie apocalypse. Create an elite military squad with up to five players and fight your way through hordes of zombies in a variety of dynamic objective missions.
気軽に、だけど本格的。『棋桜（きおう）』でキャラクターと一緒に将棋を楽しもう。初心者には学びを支えるAIサポート、実力者には純粋な読みと一手の勝負を。あなたの一手から、対局が始まる。
Roadside Research is a 1 to 4 player co-op gas station simulator. Except you’re aliens. And undercover. Do very human things like restocking shelves while preparing for the invasion. Just don’t get caught.
Experience authentic baseball with players from around the world. Feel the arc of every hit, the intensity behind each play, and the roar of the crowd surrounding the stadium. With stunning presentation, the game captures the true intensity of real baseball.
Severance is a 1-5 player paranormal investigation game… with a twist. Use tools and equipment to identify the correct ghost type while a dangerous, violent entity hunts you down. The twist? YOU can become the ghost. Choose Ghost AI, or an asymmetrical mode where a player takes the Ghost role.
Umamusume: Pretty Derby, winner of Best Mobile Game at The Game Awards 2025, is ready to race! Scout featured trainees and supporters as you navigate the immersive sports life simulation through the game's in-depth training system and top-of-the-line 3D graphics!
Predict and outwit your opponent in a free-to-play TCG where every move is planned in secret and turns resolve simultaneously. By the original designer of Infinity Wars, Wyldernook is lovingly handcrafted and built by a team committed to sharing the kind of card game we’ve always wanted to play.
Race through Street, Drift, and Drag with real licensed cars. Master every turn, upgrade your ride, and dominate solo or online. The mobile racing hit, now free-to-play on PC.