MelonLoader - The Ultimate Universal Mod Loader

Transform your Unity gaming experience with powerful modding tools. Works seamlessly with Il2Cpp and Mono games across Windows and Linux platforms.

What is MelonLoader?

MelonLoader is a universal mod loader built for Unity games. If you want to customize your favorite Unity games with mods, this is the tool that makes it happen. It works with both Il2Cpp and Mono Unity games, covering most games built on the Unity engine.

The setup is straightforward. Download the installer, point it to your game folder, and you're done. MelonLoader creates a few folders where you drop your mods and plugins. When you launch your game, everything loads automatically. No complicated configuration or game file modifications needed.

Key Features

The framework handles all the technical complexity behind loading mods safely. For developers, it includes debug mode with detailed logging so you can troubleshoot issues quickly. The configuration file lets you customize everything from console appearance to startup behavior.

What makes MelonLoader different is its universal approach. While other modding tools only work with specific games, this works across any Unity game that uses Il2Cpp or Mono. For Il2Cpp games, it includes an assembly generator that automatically creates the necessary files for modding—you just wait a minute the first time, then you're set.

Plugin and Mod System

MelonLoader separates plugins and mods for better organization. Plugins load first and provide core tools or frameworks. Mods come next and add the actual gameplay changes or new features. This structure keeps things clean and prevents conflicts between different modifications.

The framework integrates with powerful libraries like Harmony for runtime patching, giving mod creators serious capabilities. For users, this means the mods you download can implement impressive features while staying stable and compatible with each other.

Cross-Platform Support

Windows users get automatic .NET runtime installation through the installer. Linux users have full support whether running games through Wine, Steam Proton, or natively. The same mods work across platforms, so developers write code once and everyone benefits.

When game updates break mods (which happens), recovery is simple. Logs tell you exactly what failed and why. You can temporarily disable mods by moving them out of the Mods folder. Since there's no game file modification, uninstalling is just deleting a couple of files and folders.

Community and Development

Thousands of modders use MelonLoader daily across popular Unity games. The Discord community is active and helpful—whether you need installation help or advanced modding advice, experienced users stick around to help newcomers. The project is open source, welcoming contributions from anyone who wants to improve it.

For mod creators, comprehensive documentation and example projects get you started quickly. The framework handles game hooking and initialization, letting you focus on the actual mod logic. Development tools include detailed logging and debugger support, speeding up testing without constant game restarts.

Whether you're tweaking single-player difficulty, adding quality-of-life features, or completely transforming your gaming experience, MelonLoader provides a reliable foundation. It's actively maintained, well-documented, and trusted by a large community of gamers and developers.

Why Choose MelonLoader?

MelonLoader makes game modding accessible to everyone. Whether you're just getting started or you're an experienced developer, you'll find everything you need to customize your favorite Unity games.

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Works with Any Unity Game

Compatible with both Il2Cpp and Mono games right out of the box. One tool handles everything, so you don't need different loaders for different games.

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Cross-Platform Support

Run it on Windows or Linux, including Wine and Steam Proton. Your favorite mods work the same way regardless of your operating system.

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Quick & Easy Setup

The automated installer does the heavy lifting for you. Just point it to your game folder and you're ready to start modding in minutes.

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Powerful Plugin System

Extend functionality with plugins that add new capabilities. Create your own tools or use ones built by the community.

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Simple Mod Management

Drop mods into folders and they just work. No complicated setup or configuration files to mess with unless you want to.

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Built-in Debugging Tools

Detailed logs and debug mode make troubleshooting straightforward. Perfect for both using mods and creating your own.

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Free & Open Source

Completely free to use with no hidden costs. The source code is available for anyone who wants to see how it works or contribute improvements.

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Helpful Community

Thousands of modders ready to help on Discord. Whether you're stuck on installation or building complex mods, someone's been there before.

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Actively Maintained

Regular updates keep everything running smoothly with new Unity versions. Bug fixes and improvements come from both the core team and community contributors.

See MelonLoader in Action

MelonLoader Console Interface
MelonLoader Mod Loading
MelonLoader Debug Mode
MelonLoader Plugin System
MelonLoader Configuration
MelonLoader Game Integration

Common Questions

MelonLoader is software that lets you run mods on Unity games. It works with both Il2Cpp and Mono Unity games, handling the technical parts of loading custom code into your games. Think of it as a platform that makes modding accessible without needing to modify game files directly.
Yes, completely free. No trials, no premium features, no hidden costs. It's open source under the Apache License 2.0, which means the code is publicly available and you can even modify it if you want to.
If your game is built with Unity and uses either Il2Cpp or Mono, MelonLoader should work. That covers a lot of games, but whether mods exist for your specific game depends on the modding community for that game. Installation is the same regardless of which game you're modding.
Download the installer from our download page, run it, and select your game's folder when prompted. The installer handles everything automatically. If you prefer manual installation or need more control, detailed instructions are available on the download page.
Absolutely. MelonLoader fully supports Linux whether you're running games through Wine, Steam Proton, or natively. The installer works the same way, and all features are available across platforms.
After installing MelonLoader and running your game once, you'll find a "Mods" folder and a "Plugins" folder in your game directory. Drop mod files (usually .dll files) into the Mods folder. Plugin files go in the Plugins folder. MelonLoader automatically loads everything when you start the game.
Using mods in online games is risky and often against the game's terms of service. You could get banned, lose progress, or have your account suspended. MelonLoader works technically, but we strongly recommend only using it for single-player games or with explicit permission from the game developers.
Delete the "version.dll" file and the "MelonLoader" folder from your game directory. That's the basic uninstall. If you want to remove everything including your mods and settings, also delete the "Plugins," "Mods," and "UserData" folders. Your game will run normally after this.
The Discord community is the best place for help—it's active and people are generally quick to respond. You can also use the contact page to reach out directly. Make sure to check the log files in the MelonLoader/Logs folder, as they often explain what went wrong.
For Il2Cpp games on Windows, you'll need .NET 6.0 Desktop Runtime, which the installer handles automatically. Other than that, if your computer can run the game, it can run MelonLoader. There's no significant performance overhead.