About
Joint Operations brings the game's online functionality into the single-player world. One player is the host: they run the session and command it from the helicopter, the Command Center and Mother Base. Up to 15 clients join the host's session and deploy into the same world. Players arrive and leave through the game's own mechanics.
It is a multiplayer mod. Hound Protocol and Joint Operations are an independent fan project: Konami has no part in it and no connection to it.
Status: Website Site 1.x · Mod in development. The project's organization, documentation, website and research are in place. The first playable build is 0.1 (two players), developed by the project lead. Nothing is playable yet.
Highlights
| |
|---|
| 16 players | One host and up to 15 clients, in free roam and missions |
| Windows and Linux | Native on Windows, Linux through Proton (tested on Bazzite) |
| One-click join | Planned: search servers on the website and deploy straight into the game (ADR 0008) |
| Built in the open | Every decision, risk and research note is public |
Roadmap
| Phase | Goal | Status |
|---|
| 0 · Foundation | Organization, docs, website, research | Nearly complete |
| 1 · Research | Engine sessions, Steam networking, loading, state to sync | Desk research under way |
| 2 · Version 0.1 | Two players on Windows and Proton | Planned |
| 3 · Scale | 4, 8, then 16 players | Planned |
| 4 · Experience | Seamless join and leave, mod API, server browser | Planned |
Full details: ROADMAP.md.
Hound Protocol
Hound Protocol is a non-commercial, community-focused organization. We build ambitious projects, one of them being Joint Operations. It is organized in four departments:
| Department | Role |
|---|
| Administration | Direction, decisions, accounts, community |
| Development | Architecture and code |
| Quality | Testing, reviews, release sign-off |
| Contractor | Contributors who take contracts and are graded E to S++ in each field |
Access works like keycards, from LV1 (visitor) to LV7 (owner), and every staff member has a verifiable Hound ID. Sign in on the website with GitHub to see your keycard and the restricted documents your clearance opens. Every completed contract earns a signed record that anyone can check on the website. See departments and grades, keycard access and sign-in.
Get involved
Hand-written and AI-assisted work are welcome and credited equally, under the AI Use Policy. Generative AI art, music and voices are not accepted.
Documentation
Repository layout
docs/ plans, decisions, governance, and the handbook (docs/guides/)
research/ sourced research notes
data/ project records: contracts, contributor records, certificates, infractions, staff, library and handbook indexes
tools/ checks, Discord setup, contract and record tools
.github/ CI workflows, templates, code owners
The website lives in its own repository, joint-operations-web, and reads the documents and records from this one.
Requirements and rules
- Your own legal copy of MGSV on Steam. This project does not distribute the game or any of its files.
- No game files, no copied mod code: see the Clean-Room and IP Policy.
License
Code is GPL-3.0-only, with a permission to run inside MGSV and link with the Steamworks SDK. Documentation is CC BY-SA 4.0. The Hound Protocol and Joint Operations names and logos are reserved. Forks are welcome; they must stay open, keep the credits and use their own name. Details: LICENSING.md and ADR 0005.
Disclaimer
MGSV: Joint Operations is an unofficial, fan-made, non-commercial project. It is not affiliated with, endorsed by or sponsored by Konami. Metal Gear, Metal Gear Solid and related names are trademarks of their respective owners.
