Silksong Multiplayer Mod Guide: Install, Host and Join SSMP

What is the Silksong multiplayer mod?

The Silksong multiplayer mod most searchers mean is SSMP, an open-source community project that adds networked multiplayer behavior to the PC game. It is not developed, published, endorsed, or supported by Team Cherry. You still need a legitimate Silksong installation; the mod repository does not replace the game, unlock paid content, or provide an Android APK.

SSMP separates the client mod from optional dedicated-server packages. Most friend groups should start with the ordinary client release and follow the project's current instructions. Dedicated servers are useful when a host wants a separate Windows, Linux, or macOS process, but they add networking, firewall, port, and maintenance work.

Multiplayer mods can synchronize player position, combat actions, and session state without making every single-player system perfectly shared. Quest flags, bosses, cutscenes, pickups, transitions, benches, and saves may behave differently between versions. Treat co-op as an experimental layer over the base game, not as an official campaign mode with guaranteed progression parity.

Five checks before installing SSMP

Do the compatibility and recovery work before copying any mod files. It is faster to create a clean rollback point now than to diagnose a damaged install or an overwritten save later. Every player should finish these checks, not only the person hosting.

Confirm that the repository owner, release tag, asset names, publication date, and documentation agree. A page that copies the SSMP name but offers a password-protected archive, extra downloader, survey, browser extension, APK, or mod menu is not the same verified project.

• Back up the Silksong save directory and keep the backup outside the live game folder.
• Record the installed Silksong build and ensure every player uses a compatible base-game version.
• Use the same SSMP release on all clients; for this guide the verified tag is v0.3.1.
• Temporarily remove unrelated mods when diagnosing problems, then add them back one at a time.
• Read the release notes and open issues before updating an established multiplayer save.

How to install SSMP v0.3.1

The repository's documentation is the final authority because loaders, folders, dependencies, and supported game builds can change. The sequence below is deliberately conservative: verify the release, preserve the original game, install the required mod framework, then add SSMP and test with no extra mods.

Do not place server archives into the client folder unless the project instructions explicitly require it. The client ZIP and dedicated-server ZIP files have different jobs. If you only want to join a friend's game, you usually do not need to operate a dedicated server.

1. Verify the source: Open the Extremelyd1/SSMP repository and its v0.3.1 Release page. Check the tag, publication date, asset names, and release notes before downloading.
2. Protect your game: Close Silksong, back up saves, and keep a clean copy or use your storefront's file-verification feature so you can restore official files.
3. Install prerequisites: Follow the README for the currently required mod loader or dependencies. Do not substitute random loader bundles from mirrors.
4. Add the SSMP client: Extract the client package only to the location specified by the project. Preserve folder names and do not merge unrelated archives at the same time.
5. Launch a clean test: Start the game with SSMP as the only optional mod, confirm its menu or connection controls appear, and review logs before inviting other players.
6. Match every player: Compare game build, SSMP version, dependencies, configuration, and other enabled mods across all computers.

How to host or join a Silksong co-op session

Start with the smallest possible test: two players, the same game build, SSMP v0.3.1, no unrelated mods, and a fresh or backed-up save. This makes connection and synchronization errors easier to isolate. Add more players or mods only after the basic session remains stable.

A direct host may need a local address for players on the same network or a public address plus firewall and port configuration for internet connections. Never publish an administrative panel, remote desktop service, game folder, or unrelated local service to the internet merely to make a mod connection work. If the project supports a safer relay or documented server workflow, prefer it.

Agree on progression rules before playing. Decide who triggers bosses, cutscenes, benches, pickups, area transitions, and save events. If one player is the authoritative host, let that player lead state-changing interactions until the group confirms the current SSMP build synchronizes them correctly.

Common SSMP connection and compatibility problems

Most failures come from mismatched versions, missing dependencies, another mod changing the same game code, a blocked port, or a stale configuration. Change one variable at a time and keep the clean baseline available.

The mod does not appear after launch

Re-check the loader, folder path, extracted directory depth, dependency versions, and log file. A nested SSMP/SSMP folder or wrong game directory is a common installation mistake.

Players cannot connect

Confirm host address and port, verify the server is actually listening, allow the documented executable through the firewall, and test locally before troubleshooting router forwarding.

Connection works but players desync

Match game and SSMP versions, disable other mods, move to a simple area, avoid simultaneous state-changing actions, and review known issues for the current release.

The game crashes after an update

Assume temporary incompatibility until the SSMP project confirms support. Restore clean files, keep the save backup, and wait for a compatible release rather than forcing an older loader.

Progress or saves look different

Stop the session before overwriting more state. Preserve current and backup saves separately, document who hosted and what event occurred, and check project issues for recovery guidance.

Is the Silksong multiplayer mod safe?

Open source and a public issue tracker improve transparency, but they do not make every build or mirror automatically safe. Download from the named repository, inspect release history, avoid unofficial repacks, and scan downloaded archives locally. A community mod can also be technically trustworthy while still containing gameplay bugs that damage progress.

SSMP is for the PC game and should not be confused with a Silksong APK, Android port, cracked installer, or free game download. The mod does not grant ownership of Silksong. Use an official game copy, keep account credentials out of mod launchers, and never enter Steam, console, email, or payment passwords into a third-party multiplayer form.

Because direct release asset verification failed from this environment, the download button deliberately opens the official GitHub Release page. Verify the current tag and files again before installing, especially if the article date is older than a new project release.

Silksong multiplayer mod FAQ

Does Silksong have official multiplayer?

No. SSMP is a community-made mod and is not an official Team Cherry multiplayer mode.

What is the latest SSMP version?

The newest release verified on July 30, 2026 is SSMP v0.3.1, published July 13, 2026 on the project's GitHub Releases page.

Can I install the Silksong multiplayer mod on Android?

This guide covers the PC mod. Do not treat SSMP as an Android APK or proof of an official mobile version.

Do all players need the same version?

Yes. Match the Silksong build, SSMP release, dependencies, configuration, and preferably the enabled mod list.

Do I need a dedicated server?

Not always. Small groups may use the client hosting workflow documented by the project. Dedicated packages are for hosts who need a separate Windows, Linux, or macOS server process.

Will SSMP work after every Silksong update?

Not necessarily. Game updates can change code or data used by mods, so check the repository's release notes and issues before updating a multiplayer setup.

Can multiplayer corrupt my save?

Any experimental progression mod can create unexpected state or save conflicts. Keep dated backups and test on a separate save before using an important campaign.

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