Satisfactory Mod Loader

Satisfactory Mod Loader (SML) is the free plugin framework behind many Satisfactory mods, intended for players who want a managed mod setup and developers building compatible extensions. It is a strong fit for multiplayer-oriented modding and offers unusually useful development material, but it is infrastructure rather than a mod that changes the game by itself.

Overview

SML supplies the common layer that lets mods load into Satisfactory’s systems and interact with one another. That makes it valuable when several mods need shared support, while offering little reason to install it alone. The Satisfactory Mod Manager installs SML, mods, and their dependencies, then connects to the Satisfactory Mod Repository; the project specifically recommends this route instead of manual installation.

Version 3.12.0 is listed as working with both Stable and Experimental Satisfactory builds. Removing the loader is designed not to erase items or progression, which lowers the risk of trying a modded setup and returning to vanilla play. Repository uploads are tested for malware before approval, and the developer says SML makes no external network connections. Those safeguards concern the loader and repository process, not the behavior of every individual mod.

Key features

Shared loading framework

The plugin-based framework gives mods a way into game systems and a means to cooperate. Dependency handling is supported, so the manager can install required components alongside a mod instead of leaving players to assemble them manually. SML is specifically designed with multiplayer support in mind, making it a sensible foundation for co-op groups that want a consistent mod environment.

Tools for creators

Developers can write Satisfactory mods in Unreal Blueprint or C++, with community libraries also supporting JSON. The repository includes source code, an ExampleMod showing SML utilities, editor utilities, and the Unreal project used to develop mods. That material makes SML more useful as a development base than a bare runtime loader, although creators still need to understand the game’s modding technologies.

Practical boundaries

SML normally provides no standalone functionality because it is categorized as a library. Controller support is untested, so controller-focused players have no confirmed experience to rely on. Linux support is asymmetric: the latest version is listed for Linux servers, while Linux client support is marked N/A. Windows clients and servers are supported.

Pricing

There are no paid tiers, quotas, seats, or trial terms to weigh. The free plan suits any Satisfactory player or developer whose platform matches the supported client or server options; Linux desktop players should not treat the free price as evidence of client compatibility.

Platforms

SML supports Satisfactory on Windows and Linux overall. The current release covers Windows clients and servers and Linux servers, but Linux client support is marked N/A. Controller support is untested. Installation is intended through Satisfactory Mod Manager rather than a manual release-file process.

Who it's for

Choose SML if you want a maintained base for installing Satisfactory mods, especially in multiplayer, or if you are developing mods and need shared loading behavior, dependency support, examples, and editor utilities. It is also a low-risk option for players who value being able to uninstall without losing progression. Look elsewhere if you want a loader that changes gameplay on its own, need confirmed Linux client support, or require documented controller compatibility.

Pros and cons

• Pros: Free with no required dependencies; multiplayer-minded design; manager installation handles mods and dependencies; uninstalling is not expected to remove items or progression; source, examples, editor utilities, and the Unreal development project help creators; no external network connections are made.
• Cons: SML is a library, not a standalone gameplay experience; Linux client support is marked N/A; controller support is untested; using it requires choosing and managing separate mods.

Alternatives

For a broader, free loader spanning Android, Linux, macOS, and Windows, consider MelonLoader. SMAPI is the better fit for Stardew Valley 1.6.14 or later, including Steam Deck users. Choose BepInEx when you want open-source Linux, macOS, and Windows support with manual installation and stable or bleeding-edge builds. Hollow Knight Modding API targets Hollow Knight without stated paid tiers or usage limits. ModTek is the free loader for the BattleTech PC game. MWSE offers GNU GPL free software for its supported games and welcomes contributions. xOBSE is a free downloadable GitHub release for its supported platform. Baldur's Gate 3 Script Extender is the relevant free choice for Baldur’s Gate 3, under a license whose Commons Clause restricts resale.

Browse more options in Game Mod Loaders.

Verdict

Satisfactory players who want a free, multiplayer-conscious mod foundation should choose SML and install it through Satisfactory Mod Manager. Its strongest case is dependable shared loading with developer tooling and a progression-safe uninstall path; Linux client users, controller players, and anyone seeking a self-contained gameplay mod should look elsewhere.