Free Massively Multiplayer Games on Steam
Steam currently has 6,294 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 6/19/2025.
Looking for more? Explore other lists such as:
- Best massively multiplayer games on Steam
- Best massively multiplayer Steam Deck games
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- Best massively multiplayer Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. 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 holds the #1 spot for "best free Massively Multiplayer game on Steam" with a Player Score of 63. Its score was calculated by analyzing a total of 115,750 reviews on Steam. This breaks down to a total of 73,261 positive reviews and 42,489 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 |
2. 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 has achieved a Player Score of 88, placing it in the #2 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 236,837 reviews on Steam. This breaks down to a total of 210,438 positive reviews and 26,399 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 |
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 73, placing it in the #3 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 629,632 reviews on Steam. This breaks down to a total of 460,367 positive reviews and 169,265 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 621,215 reviews on Steam. This breaks down to a total of 543,152 positive reviews and 78,063 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. 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 #5 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 241,122 reviews on Steam. This breaks down to a total of 182,167 positive reviews and 58,955 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 |
6. Unturned
You're a survivor in the zombie infested ruins of society, and must work with your friends and forge alliances to remain among the living.
Unturned has achieved a Player Score of 90, placing it in the #6 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 555,564 reviews on Steam. This breaks down to a total of 506,627 positive reviews and 48,937 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play Unturned on the Steam Deck (though some functionality may be limited).
| Release Date | 7/7/2017 |
| Developer | Smartly Dressed Games |
| Publisher | Smartly Dressed Games |
| Steam App Id | 304930 |
7. Russian Fishing 4
Russian Fishing 4 is a fishing simulator with RPG elements. There is no story line and the whole process is based on the concept of an open, free to roam and free to play game.
Russian Fishing 4 has achieved a Player Score of 54, placing it in the #7 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 73,758 reviews on Steam. This breaks down to a total of 39,817 positive reviews and 33,941 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Russian Fishing 4 on the Steam Deck (though some functionality may be limited).
| Release Date | 11/11/2021 |
| Developers | |
| Publishers | |
| Steam App Id | 766570 |
8. MIR4
MIR4 is a free-to-play open world K-fantasy MMORPG that can be cross-played on both PC and mobile devices. MIR4 is full of action and features numerous large scale clan PVP battles. Join now and become a legend.
MIR4 has achieved a Player Score of 64, placing it in the #8 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 14,559 reviews on Steam. This breaks down to a total of 9,498 positive reviews and 5,061 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 MIR4 on the Steam Deck.
| Release Date | 8/25/2021 |
| Developer | Wemade Next |
| Publisher | Wemade |
| Steam App Id | 1623660 |
9. Destiny 2
Destiny 2 is an action MMO with a single evolving world that you and your friends can join anytime, anywhere, absolutely free.
Destiny 2 has achieved a Player Score of 79, placing it in the #9 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 626,070 reviews on Steam. This breaks down to a total of 498,020 positive reviews and 128,050 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 Destiny 2 on the Steam Deck.
10. IdleOn - The Idle RPG
Create your own heroes who keep fighting wherever you leave them! When you return, spend their loot on upgrades and powerful synergies — but don't expect an ending, as defeating each World Boss unlocks MORE content!
IdleOn - The Idle RPG has achieved a Player Score of 78, placing it in the #10 spot for the best free Massively Multiplayer games. Its score was calculated by analyzing a total of 22,020 reviews on Steam. This breaks down to a total of 17,516 positive reviews and 4,504 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 - The Idle RPG on the Steam Deck (though some functionality may be limited).
| Release Date | 4/2/2021 |
| Developer | Lavaflame2 |
| Publisher | Lavaflame2 |
| Steam App Id | 1476970 |
More Free Massively Multiplayer Games
Explore even more rankings for the 100 best free Massively Multiplayer games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 91,565 | 12/4/2024 | 63 | Free | Steam Charts | |
| 70,566 | 10/23/2013 | 88 | Free | Steam Charts | |
| 49,169 | 8/15/2013 | 73 | Free | Steam Charts | |
| 30,290 | 3/25/2013 | 87 | Free | Steam Charts | |
| 29,295 | 2/1/2017 | 75 | Free | Steam Charts | |
| 20,963 | 7/7/2017 | 90 | Free | Steam Charts | |
| 16,979 | 11/11/2021 | 54 | Free | Steam Charts | |
| 13,225 | 8/25/2021 | 64 | Free | Steam Charts | |
| 12,696 | 10/1/2019 | 79 | Free | Steam Charts | |
| 11,218 | 4/2/2021 | 78 | Free | Steam Charts | |
 | 11,017 | 12/9/2022 | 75 | Free | Steam Charts | |
 | 6,562 | 11/15/2017 | 76 | Free | Steam Charts | |
 | 6,384 | 5/16/2018 | 78 | Free | Steam Charts | |
 | 5,719 | 4/6/2020 | 68 | Free | Steam Charts | |
 | 5,340 | 11/9/2016 | 78 | Free | Steam Charts | |
 | 4,603 | 8/28/2017 | 85 | Free | Steam Charts | |
 | 3,899 | 4/28/2021 | 81 | Free | Steam Charts | |
 | 3,674 | 7/21/2020 | 88 | Free | Steam Charts | |
 | 3,216 | 12/16/2010 | 73 | Free | Steam Charts | |
 | 3,095 | 4/10/2024 | 85 | 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. (2025, June 19). Steam Store. Steam Store.
- Valve Corporation. (2025, June 19). Delta Force on Steam. Steam Store.
- Valve Corporation. (2025, June 18). Path of Exile on Steam. Steam Store.
- Valve Corporation. (2025, June 13). War Thunder on Steam. Steam Store.
- Valve Corporation. (2025, June 14). Warframe on Steam. Steam Store.
- Valve Corporation. (2025, June 19). VRChat on Steam. Steam Store.
- Valve Corporation. (2025, June 17). Unturned on Steam. Steam Store.
- Valve Corporation. (2025, June 17). Russian Fishing 4 on Steam. Steam Store.
- Valve Corporation. (2025, June 18). MIR4 on Steam. Steam Store.
- Valve Corporation. (2025, June 18). Destiny 2 on Steam. Steam Store.
- Valve Corporation. (2025, June 12). IdleOn - The Idle RPG on Steam. Steam Store.