Free Massively Multiplayer Games on Steam
Steam currently has 6,998 Massively Multiplayer games available to download and play. Explore our list of the best free games ranked by popularity and ratings. Data for this list is calculated from reviews and player counts reported directly by Steam and will be updated in real-time. Free Massively Multiplayer game rankings were last updated on 3/8/2026.
Looking for more? Explore other lists such as:
- Best massively multiplayer games on Steam
- Best massively multiplayer Steam Deck games
- Best massively multiplayer Steam games for Mac OS
- Best massively multiplayer Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. Path of Exile
You are an Exile, struggling to survive on the dark continent of Wraeclast, as you fight to earn power that will allow you to exact your revenge against those who wronged you. Path of Exile is an online Action RPG set in a dark fantasy world. The game is completely free and will never be pay-to-win.
Path of Exile holds the #1 spot for "best free Massively Multiplayer game on Steam" with a Player Score of 88. Its score was calculated by analyzing a total of 245,022 reviews on Steam. This breaks down to a total of 218,046 positive reviews and 26,976 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, it is possible to play Path of Exile on the Steam Deck (though some functionality may be limited).
| Release Date | 10/23/2013 |
| Developer | Grinding Gear Games |
| Publisher | Grinding Gear Games |
| Steam App Id | 238960 |
2. Bongo Cat
Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?
Bongo Cat has achieved a Player Score of 95, placing it in the #2 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 92,902 reviews on Steam. This breaks down to a total of 89,915 positive reviews and 2,987 negative reviews — making it "Overwhelmingly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 3/5/2025 |
| Developers | |
| Publisher | Irox Games |
| Steam App Id | 3419430 |
3. War Thunder
War Thunder is the most comprehensive free-to-play, cross-platform, MMO military game dedicated to aviation, armoured vehicles, and naval craft, from the early 20th century to the most advanced modern combat units. Join now and take part in major battles on land, in the air, and at sea.
War Thunder has achieved a Player Score of 72, placing it in the #3 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 722,720 reviews on Steam. This breaks down to a total of 526,244 positive reviews and 196,476 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Release Date | 8/15/2013 |
| Franchise | Gaijin Network Ltd |
| Developer | Gaijin Entertainment |
| Publishers | |
| Steam App Id | 236390 |
4. Warframe
Awaken as an unstoppable warrior and battle alongside your friends in this story-driven free-to-play online action game
Warframe has achieved a Player Score of 87, placing it in the #4 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 653,149 reviews on Steam. This breaks down to a total of 572,331 positive reviews and 80,818 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Release Date | 3/25/2013 |
| Developer | Digital Extremes |
| Publisher | Digital Extremes |
| Steam App Id | 230410 |
5. Delta Force
Delta Force, a free-to-play 1st-person tactical shooter, returns as the latest in the classic series. With 25 years defining the genre, Delta Force is back with an upgraded arsenal of weaponry, jaw-dropping environments, and a truly dynamic world.
Delta Force has achieved a Player Score of 58, placing it in the #5 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 174,904 reviews on Steam. This breaks down to a total of 102,246 positive reviews and 72,658 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Delta Force on the Steam Deck.
| Release Date | 12/4/2024 |
| Developers | |
| Publisher | TiMi Studio Group |
| Steam App Id | 2507950 |
6. VRChat
Join our growing community as you explore, play, and help craft the future of social VR. Create worlds and custom avatars. Welcome to VRChat.
VRChat has achieved a Player Score of 75, placing it in the #6 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 258,004 reviews on Steam. This breaks down to a total of 194,405 positive reviews and 63,599 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Release Date | 2/1/2017 |
| Developer | VRChat Inc. |
| Publisher | VRChat Inc. |
| Steam App Id | 438100 |
7. Where Winds Meet
Where Winds Meet is an epic Wuxia open-world action-adventure RPG set in ancient China at the tenth century. Players will assume the role of a young sword master as they embark on a journey to uncover the mysteries of their own identity. Let the wind carry your legend on an epic journey to the East!
Where Winds Meet has achieved a Player Score of 86, placing it in the #7 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 103,254 reviews on Steam. This breaks down to a total of 90,224 positive reviews and 13,030 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Where Winds Meet on the Steam Deck (though some functionality may be limited).
| Release Date | 11/14/2025 |
| Developer | Everstone Studio |
| Publisher | NetEase Games |
| Steam App Id | 3564740 |
8. STALCRAFT: X
STALCRAFT: X is the largest open-world online game in the Chernobyl Exclusion Zone. Explore the world full of mutants and anomalies alone or with friends — unforgettable emotions guaranteed.
STALCRAFT: X has achieved a Player Score of 73, placing it in the #8 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 95,028 reviews on Steam. This breaks down to a total of 69,989 positive reviews and 25,039 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play STALCRAFT: X on the Steam Deck (though some functionality may be limited).
9. IdleOn
The management RPG where your heroes keep fighting even when you're gone! Spend their loot on upgrades, unlock classes from Elemental Wizard to Cannon Pirate, and level up 19 unique skills like Farming, Sailing, and even Construction!
IdleOn has achieved a Player Score of 78, placing it in the #9 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 27,736 reviews on Steam. This breaks down to a total of 22,050 positive reviews and 5,686 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play IdleOn on the Steam Deck (though some functionality may be limited).
| Release Date | 11/6/2025 |
| Developer | Lavaflame2 |
| Publisher | Lavaflame2 |
| Steam App Id | 1476970 |
10. Once Human
Once Human is a multiplayer open-world survival game set in a strange, post-apocalyptic future. Unite with friends to fight monstrous enemies, uncover secret plots, compete for resources, and build your own territory. Once, you were merely human. Now, you have the power to remake the world.
Once Human has achieved a Player Score of 77, placing it in the #10 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 165,959 reviews on Steam. This breaks down to a total of 128,193 positive reviews and 37,766 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Once Human on the Steam Deck.
| Release Date | 7/9/2024 |
| Developer | Starry Studio |
| Publishers | |
| Steam App Id | 2139460 |
More Free Massively Multiplayer Games
Explore even more rankings for the 100 best free Massively Multiplayer games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 155,841 | 10/23/2013 | 88 | Free | Steam Charts | |
| 142,915 | 3/5/2025 | 95 | Free | Steam Charts | |
| 91,570 | 8/15/2013 | 72 | Free | Steam Charts | |
| 60,391 | 3/25/2013 | 87 | Free | Steam Charts | |
| 54,891 | 12/4/2024 | 58 | Free | Steam Charts | |
| 49,670 | 2/1/2017 | 75 | Free | Steam Charts | |
| 34,466 | 11/14/2025 | 86 | Free | Steam Charts | |
| 21,814 | 12/9/2022 | 73 | Free | Steam Charts | |
| 16,723 | 11/6/2025 | 78 | Free | Steam Charts | |
| 14,997 | 7/9/2024 | 77 | Free | Steam Charts | |
 | 13,927 | 11/11/2021 | 58 | Free | Steam Charts | |
 | 11,892 | 7/7/2017 | 90 | Free | Steam Charts | |
 | 11,270 | 8/25/2021 | 65 | Free | Steam Charts | |
 | 11,078 | 7/17/2025 | 54 | Free | Steam Charts | |
 | 10,985 | 5/16/2018 | 78 | Free | Steam Charts | |
 | 10,504 | 4/28/2021 | 80 | Free | Steam Charts | |
 | 10,210 | 10/1/2019 | 77 | Free | Steam Charts | |
 | 8,048 | 11/9/2016 | 77 | Free | Steam Charts | |
 | 7,207 | 8/23/2022 | 87 | Free | Steam Charts | |
 | 7,206 | 11/15/2017 | 76 | Free | Steam Charts |
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Player counts and rankings are enriched, analyzed, and updated in real-time to ensure we surface the most up-to-date insights. Learn more about the Steambase approach to data collection and our review methodology.
- Valve Corporation. (2026, March 8). Steam Store. Steam Store.
- Valve Corporation. (2026, March 8). Path of Exile on Steam. Steam Store.
- Valve Corporation. (2026, March 6). Bongo Cat on Steam. Steam Store.
- Valve Corporation. (2026, March 7). War Thunder on Steam. Steam Store.
- Valve Corporation. (2026, March 5). Warframe on Steam. Steam Store.
- Valve Corporation. (2026, March 8). Delta Force on Steam. Steam Store.
- Valve Corporation. (2026, March 6). VRChat on Steam. Steam Store.
- Valve Corporation. (2026, March 8). Where Winds Meet on Steam. Steam Store.
- Valve Corporation. (2026, March 6). STALCRAFT: X on Steam. Steam Store.
- Valve Corporation. (2026, March 6). IdleOn on Steam. Steam Store.
- Valve Corporation. (2026, March 3). Once Human on Steam. Steam Store.