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Just Cause™ 3: Multiplayer Mod

Just Cause™ 3: Multiplayer Mod

Just Cause 3 Multiplayer mod is a free fan-created project bringing an explosive and highly-customizable multiplayer.

Released Jul 20, 2017 Developer nanos GbR Publisher nanos GbR, Square Enix Platforms Windows ActionMassively MultiplayerOpen WorldMultiplayerViolent
View on Steam ↗ Free (US · as of 2026-07-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.

78.2%positive2,658 reviews
Recommended · 6 found this helpful

“Please Fix this issue WindowsCodecsExt.dll not able to play multiplayer”

— a player, Steam review · 4 hrs played
Recommended · 1 found this helpful

“I mean the title delivers but the amount of trolls in the public servers make it boring quickly. It would be fun to see servers with game modes, maybe even the story in co-op. Maybe I am asking for too much but that is something that would improve the mod overall. For anyone…”

— a player, Steam review · 1 hrs played
Not recommended · 1 found this helpful

“I've tried everything in the book and multiplayer opens with a black screen then closes it never works.”

— a player, Steam review · 8 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live count fetched 2026-07-11 12:47 UTC · history via SteamCharts.

1playing at last check
424-hour peak
614all-time peak
0 100 200 2018 2020 2022 2024 2026 127 avg · Jul 2017

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

Freecurrent · sampled 2026-07-26 08:39 UTC
Freelowest since tracking began2026-07-11

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

May 02, 2026
Just Cause 3: Multiplayer Mod - Update 1.0.7

There are more updates on the horizon, this update is intended to fix some immediate issues and sets us up for more future development. Laying the foundation to bring fixes, new features and expand Ju

Aug 10, 2017
Just Cause 3: Multiplayer Mod - Update 1.0.5

Client Fixed a common crash introduced in 1.0.4 related to leaving vehicles

Aug 10, 2017
Just Cause 3: Multiplayer Mod - Update 1.0.5

Client Fixed a common crash introduced in 1.0.4 related to leaving vehicles

Aug 09, 2017
Just Cause 3: Multiplayer Mod - Update 1.0.4

Client Fixed TeamViewer causing the mouse to not work Fixed our crash handler incorrectly catching some internal windows exceptions which are not critical Fixed players not getting removed properly fr

Aug 09, 2017
Just Cause 3: Multiplayer Mod - Update 1.0.4

Client Fixed TeamViewer causing the mouse to not work Fixed our crash handler incorrectly catching some internal windows exceptions which are not critical Fixed players not getting removed properly fr

Games like Just Cause™ 3: Multiplayer Mod

From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-20.

GenresAction, Massively Multiplayer
Player tagsAction · Massively Multiplayer · Open World · Multiplayer · Violent · Shooter · Free to Play · Third-Person Shooter · Mod · Sandbox · Third Person · Funny (SteamSpy community voting)
FeaturesMulti-player · PvP · Online PvP · Partial Controller Support
LanguagesEnglish
Estimated owners200,000 – 500,000 (SteamSpy)
Official sitehttps://just-cause.mp
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system 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