Download Melonloader

Download MelonLoader - World's 1st Universal Mod Loader for Unity Games

MelonLoader is a modular and open-source framework built specifically for Unity games, enabling developers and players to load custom .NET mods directly into the game environment without editing or replacing original files. 

It is engineered for performance, stability, and broad compatibility, providing a clean injection system that works seamlessly across most Unity versions and distribution platforms, including Steam and Epic Games.

🚀 System Requirements & Prerequisites

MelonLoader integrates directly into a game’s executable through a low-level injection process, which requires specific system dependencies to be installed on Windows.

If these components are missing or incorrectly installed, Melon Loader may fail to initialize, resulting in installation errors, crashes, or the game not launching.

Microsoft Visual C++ Redistributable

This component is required for the MelonLoader bootstrap process and proxy DLL to operate correctly.

Required: Microsoft Visual C++ 2015–2019 Redistributable

Recommended: Install both x64 and x86 to ensure compatibility across different Unity titles. This prevents the majority of missing DLL and startup crash issues.

.NET Runtime Environment

The required .NET runtime depends on the scripting backend used by the Unity game.

For Mono-based games (older Unity versions):
Standard Windows .NET Framework runtimes (typically 3.5, 4.7.2, or 4.8).
These are often already included in Windows or automatically prompted by the game.

For IL2CPP-based games (modern Unity versions):
Required: .NET Desktop Runtime 6.0 (or newer)

Important: Install the runtime that matches your game’s architecture.

  • x64 runtime for 64-bit games

  • x86 runtime for 32-bit games

Installing the incorrect runtime is one of the most common causes of the il2cpp_init detour failed error.

🔎 How to Check Your Game's Architecture

  • Launch the game.

  • Open Task Manager (Ctrl + Shift + Esc).

  • Find the game process name.

  • Look for your game’s process name. If it is followed by (32 bit), it is a 32-bit game (requires x86 runtimes); otherwise, it is likely a 64-bit game (requires x64 runtimes).

🔎 How to Install Melonloader

Here are two way to install Melonloader, follow;

đź’» Automated Melonloader Installation Guide

Step 1: Preparation

  • Close the Game: Make sure the game you want to mod is completely closed.

  • Verify Requirements: Confirm that all required Visual C++ Redistributables and .NET Desktop Runtime 6.0 are installed (as listed above).

  • Download Installer: Get the latest MelonLoader.Installer.exe from the official MelonLoader website or GitHub.

Step 2: Install MelonLoader

  1. Run MelonLoader.Installer.exe

  2. Select Game Executable

    • Click “SELECT”

    • Browse to your game’s installation folder (Steam/Epic/GOG directory)

    • Choose the main game .exe file (example: GameName.exe)

  3. Choose Version

    • Select the latest stable version

    • (Optional) Leave Nightly Builds disabled unless a mod specifically requires them

  4. Install

    • Click “INSTALL”

    • The installer will automatically download the proper files and place them in your game’s root directory (including version.dll and the MelonLoader folder)

Step 3: First Launch & Verification

  • Start the Game: Launch using your normal method (Steam, desktop shortcut, etc.)

  • Look for Console Window: A black console window should appear—this means MelonLoader is loading correctly.

    • The first launch may take extra time as MelonLoader initializes.

After closing the game, check your game’s folder. You should now see new directories:

📂 Mods – Place your main .dll mods here
📂 Plugins – Utility plugins and helper libraries
📂 UserData – Configuration files created by mods
📂Logs – Contains latest.log (important for troubleshooting)

Manual Installation

Use this method if the automated installer fails, or if you are on Linux using Proton/Wine.

  1. Download Files: Download the manual ZIP file that matches your game’s architecture:

    • MelonLoader.x64.zip (for 64-bit games)

    • MelonLoader.x86.zip (for 32-bit games)

  2. Extract Files: Extract the contents of the ZIP directly into your game’s main installation directory. The following files/folders should be in the same folder as your game’s .exe:

    • The MelonLoader folder.

    • The version.dll file.

  3. Launch: Run the game to generate the remaining folders (Mods, Plugins, etc.).

Melonloader Version's List

Only the latest version of MelonLoader is provided here to ensure the best compatibility, stability, and performance. Older versions are not included, as they may contain issues or may not work correctly with modern Unity games.

Version

Window

Linux

Troubleshooting

Common Linux Issues and Fixes

❌ Cpp2IL Permission Error

If Cpp2IL fails to run, set execution permissions:

bash – chmod +x MelonLoader/Cpp2IL/Cpp2IL
 

â›” Game Not Launching

Try the following checks:

  • Confirm you installed the correct version (x64 vs x86)

  • Temporarily remove all Mods and Plugins

  • Review the log files inside the MelonLoader/Logs folder to identify the error

 
Â