Satisfactory Mod Loader

Satisfactory Mod Loader (SML) is a free framework for loading mods in Satisfactory. It suits players who want to manage a modded game and developers building Satisfactory mods. Its strongest case is as shared infrastructure for multiplayer-aware mods; it is not a gameplay mod in its own right.

Overview

SML gives mods a common way to load into game systems and interact with one another. Since it is categorized as a library, players should treat it as a foundation for other mods, not as a source of new gameplay by itself. Satisfactory Mod Manager installs SML, mods, and dependencies, and connects to the Satisfactory Mod Repository; the project recommends using the manager instead of installing the loader manually.

Version 3.12.0 is listed as working with both Stable and Experimental Satisfactory. The repository says uploaded content is tested for malware before approval for download, and the developer says SML makes no external network connections. Those points are useful context, but they do not guarantee the behavior or safety of every individual mod.

Key features

Shared mod framework

SML helps mods load into systems provided by the game and cooperate with each other. That shared foundation is most useful when a player wants to run multiple compatible mods or a developer needs support for a mod rather than building every interaction from scratch. The project describes multiplayer support as a design priority, making it a relevant choice for modded play with others.

Support for mod creators

Satisfactory mods can be written in Unreal Blueprint or C++, and community libraries also support JSON files. The repository includes source code, editor utilities, an Unreal project used for mod development, and an ExampleMod that demonstrates SML utilities. These resources give creators material to learn from and build on; players who only want a ready-made gameplay change will get more value from the mods they install through the manager than from SML itself.

Manager-led installation

Satisfactory Mod Manager handles the loader, mods, and their dependencies, with a connection to the Satisfactory Mod Repository. SML reports no required dependencies, while its mod ecosystem can still involve dependencies between individual mods. Using the manager is the project's recommended installation route and avoids treating the loader as a manual, standalone setup.

Pricing

SML is free: its plan costs nothing. There are no paid tiers to weigh against one another, and the project reports no required dependencies. The price makes it accessible to players and developers alike, though the loader's value depends on the mods and development work built around it.

Platforms

Windows support covers both clients and servers, while Linux support is for servers; Linux client support is marked N/A. That distinction matters for players: a Linux desktop user should not assume the Windows client experience is available, while server operators can use the supported Linux server version. Controller support is untested, so controller users should not count on a confirmed setup.

SML supports Satisfactory and uses plugin-based mod loading, with plugin support and dependency handling. The project says uninstalling the vanilla-friendly loader will not cost players their items or progression, a welcome reduction in risk when returning to an unmodded game. The repository displays a GPL-3.0 license and says the software is provided as-is.

Who it's for

SML is the right choice for Satisfactory players installing mods through Satisfactory Mod Manager, particularly those who value a framework designed with multiplayer in mind. It also suits mod creators who want helper features and examples for Blueprint, C++, or community JSON-based work. It is a poor fit for someone seeking a standalone gameplay change, or for a Linux client player expecting supported desktop mod loading.

For help, the project points users to its Discord server for SML and Satisfactory modding discussions. The software is provided as-is, so community discussion is the stated support path rather than a warranty-backed service.

Pros and cons

• Pros: Free to use, with no required dependencies, making the framework accessible without a paid tier.
• Pros: Manager integration handles installation of SML, mods, and dependencies, reducing the need for manual loader setup.
• Pros: Multiplayer-minded design and a vanilla-friendly uninstall that preserves items and progression address two practical concerns for modded play.
• Pros: Source code, an ExampleMod, editor utilities, and an Unreal development project give creators concrete starting points.
• Cons: Linux support is limited to servers, ruling out a supported Linux client setup.
• Cons: SML is a library rather than a standalone gameplay mod, so players need other mods to change the game.
• Cons: Controller support is untested, leaving controller users without a confirmed experience.
• Cons: The software is provided as-is, with Discord as the project's discussion channel rather than a stated warranty.

Alternatives

For a different game's mod ecosystem, MelonLoader is a free option with Android, Linux, macOS, and Windows support under the Apache License 2.0. SMAPI is also free across Android, Linux, macOS, and Windows, and suits Stardew Valley players whose game meets its version requirement: 1.6.14 or later on Linux, macOS, Windows, or Steam Deck.

BepInEx offers Linux, macOS, and Windows support, open-source licensing, and stable and bleeding-edge builds, with manual installation. Hollow Knight Modding API is a free choice for Hollow Knight modding, with no paid tiers or usage limits stated. For BattleTech on PC, ModTek is a free mod loader.

RED4ext is a free Windows-only script extender and plugin manager for Cyberpunk 2077. ScriptHookVDotNet is another free Windows option, for the PC version, but requires Script Hook V, .NET Framework 4.8 or later, and Microsoft Visual C++ Redistributable. Baldur's Gate 3 Script Extender is free to obtain under its published license; its Commons Clause restricts selling software whose value substantially derives from it.

For a broader category comparison, browse Game Mod Loaders.

Verdict

Choose SML if you play Satisfactory with mods or develop them and want a free, manager-installed framework designed with multiplayer in mind. Its support for preserving progression on uninstall is a practical plus. Look elsewhere if you need Linux client support or expect the loader itself to add gameplay.