Just Cause 3's Multiplayer mod is now available to download on Steam

Nanos Framework's Multiplayer mod has become an official add-on

Just Cause 3: Multiplayer is coming to Steam

Just Cause 3's Multiplayer mod is now available to download on Steam

Nanos Frameworks' Just Cause 3 Multiplayer mod is now a semi-official add-on for the Steam version of the game, with the mod now being available to directly download and install on Steam.  This modification allows PC players to easily play Just Cause 3 online, opening up the game to a lot more mayhem than any single player could provide. 
Steam integration will make the installation process much easier, with the mod itself taking up between 300MB and 1GB of storage space according to the mod's official Steam Page


Just Cause 3 Multiplayer mod is a free fan-created project bringing an explosive and highly-customizable multiplayer to the critically acclaimed action sandbox game. Get ready for countless hours of hilarious brawls, stunts and races with hundreds of other players! 

For a more detailed list of the current options and instructions on how to install and play the mod, please see our FAQ on the Steam discussion board here: (insert URL here)

We at Nanos are an enthusiastic team of coders from Germany, Austria and the UK who have worked towards releasing Just Cause 3 Multiplayer for more than a year. Our goal is to bring multiplayer to the next level by allowing the players themselves to build upon our work!


  • Battle, race, chase and play tag with fighter jets with up to hundreds of players per server.
  • Enjoy community created gamemodes, ensuring a constantly evolving play set.
  • Countless hours of fun including racing, deathmatch, skydiving, freeroam, etc.
  • Don’t see the game mode you want? Make one!
  • State-of-the-art synchronisation helps reduce lag to a minimum.



Below are the PC system requirements for Just Cause 3 Multiplayer, which is the same as the requirements for vanilla Just Cause 3, with the mod only requiring additional system storage. Even so expect framerates to be lower with additional players on-screen, especially during intensive scenes with additional explosions or other activity. 


OS: Windows Vista SP2 / Windows 7 SP1 / Windows 8.1 (64-bit OS required)
Processor: Intel Core i5-2500k, 3.3GHz / AMD Phenom II X6 1075T 3GHz
Memory: 8 GB RAM
Graphics: NVIDIA GeForce GTX 670 (2GB) / AMD Radeon HD 7870 (2GB)
DirectX: Version 11
Network: Broadband Internet connection
Storage: 300 MB available space

OS: Vista SP2 / Windows 7.1 SP1 / Windows 8.1 (64-bit Operating System Required)
Processor: Intel Core i7-3770, 3.4 GHz / AMD FX-8350, 4.0 GHz
Memory: 8 GB RAM
Graphics: NVIDIA GeForce GTX 780 (3GB) / AMD R9 290 (4GB)
DirectX: Version 11
Network: Broadband Internet connection
Storage: 1 GB available space


You can join the discussion on Just Cause 3's Multiplayer mod hitting Steam on the OC3D Forums


«Prev 1 Next»

Most Recent Comments


Register for the OC3D Newsletter

Subscribing to the OC3D newsletter will keep you up-to-date on the latest technology reviews, competitions and goings-on at Overclock3D. We won't share your email address with ANYONE, and we will only email you with updates on site news, reviews, and competitions and you can unsubscribe easily at any time.

Simply enter your name and email address into the box below and be sure to click on the links in the confirmation emails that will arrive in your e-mail shortly after to complete the registration.

If you run into any problems, just drop us a message on the forums.