Just Cause™ 3: Multiplayer Mod

Multiplayer sandbox mod for open-world races, stunts, and battles

nanos GbR · Published by nanos GbR, Square Enix · Released Jul 20, 2017

Reviews: Mostly Positive; 77% of 3,146
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 30, 2026
Steam Deck: Unsupported
Last update on Steam: 2 months ago; Aug 28, 2026
Minimum PC: GeForce GTX 670; 8 GB RAM · 0.3 GB disk; Full requirements

What is Just Cause™ 3: Multiplayer Mod?

This free, fan-made mod adds online multiplayer to the third-person action sandbox Just Cause 3. You join servers to play community-created modes, including deathmatch, skydiving, and free roaming.

For you if...

+you want to build your own multiplayer game modes

Not for you if...

−you prefer solo play to online multiplayer

What players say

77% of 3,146 reviews are positive

Players praise causing destruction together. Recent complaints focus on launch failures, black screens, and crashes.

Screenshots and trailer

Just Cause™ 3: Multiplayer Mod screenshot 1

Just Cause™ 3: Multiplayer Mod system requirements

Minimum: GeForce GTX 670, 8 GB RAM, 0.3 GB of disk space.

As published by the developer.

Can my PC run Just Cause™ 3: Multiplayer Mod?

Tell us your graphics card once and every game page will answer this for you.

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Minimum

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
Graphics: NVIDIA GeForce GTX 670 (2GB) / AMD Radeon HD 7870 (2GB)
Memory: 8 GB RAM
Storage: 300 MB available space
DirectX: Version 11

Does Just Cause™ 3: Multiplayer Mod have co-op or multiplayer?

Yes: PvP online. There is no single-player mode.

Does Just Cause™ 3: Multiplayer Mod run on Steam Deck?

Unsupported No: Valve rates it Unsupported on Steam Deck.

Not supported on SteamOS

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Steam features: Family Sharing
Age rating: 17+
Languages: Text only: English.

Does Just Cause™ 3: Multiplayer Mod use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam