How to Use MelonLoader BTD6: Complete In-Depth Guide

If you want to mod Bloons TD 6 (BTD6), the first and most essential tool you will need is MelonLoader. BTD6 is built on the Unity Engine, so almost all gameplay mods and expansion mods require MelonLoader to function correctly. This guide will walk you step by step through how to use MelonLoader BTD6, including installation, folder setup, ModHelper usage, and troubleshooting.

To get started, you can download the latest official MelonLoader installer directly from
https://melonloader.pro/
or the main download page:
https://melonloader.pro/download-melonloader/

What You Need Before Installing MelonLoader

Before installing MelonLoader for BTD6, make sure your system has these required dependencies. Missing dependencies are the most common reason MelonLoader fails to load.

Required System Files

Install the following:

• Microsoft Visual C++ 2015 to 2022 Redistributable
  • Install both x64 and x86 versions
• .NET Desktop Runtime 6.0 or higher
  • Install the x64 version

Installing MelonLoader for BTD6

Step-by-Step Instructions

• Download the Installer
  Download MelonLoader.Installer.exe from: https://melonloader.pro/download-melonloader/
• Run the Installer
  Open the installer on your PC
• Select BTD6
  Click Select and locate your BTD6 game folder
  Typical Steam path:
  C:\Program Files (x86)\Steam\steamapps\common\BloonsTD6
• Choose the Game EXE
  Select the file named BloonsTD6.exe
• Install
  Choose the latest stable version and press Install

After installation finishes, start the game normally through Steam.

A black console window titled MelonLoader will open automatically. After a few moments, BTD6 will launch. This first launch creates the essential folders for modding.

Understanding the BTD6 Modding Folder Structure

Once MelonLoader loads for the first time, it creates several important folders inside your BTD6 directory:

Key Folders Created

• MelonLoader
  Contains core loader files and logging tools
• Mods
  Place primary gameplay mods here
• Plugins
  Used for support mods and frameworks such as ModHelper, required by most BTD6 mods
• UserData
  Stores configuration files created by installed mods
• Logs
  Contains the file latest.log, used for crash investigation

How to Install Mods for BTD6

Most BTD6 mods rely on the ModHelper plugin. Without ModHelper, many custom towers, upgrades, and map mods will not load.

Step 1: Install ModHelper (Required for most mods)

• Download the ModHelper .dll file from a trusted BTD6 modding source
• Place it into the Plugins folder

Step 2: Install Gameplay Mods

• Download the mod .dll file
• Place it inside the Mods folder

Folder Placement Example

Mod Type	File Example	Folder	Purpose
Framework	ModHelper.dll	Plugins	Enables other mods to function
Gameplay	CustomTower.dll	Mods	Adds new features, towers, or game mechanics

Launch the Game

Run BTD6 and watch the MelonLoader console window:

• If the mod loads successfully, its name will appear in the console
• The game will continue to start normally

Important Notes for BTD6 Modding

Finding Mods

Always download mods from trusted communities such as GitHub, Nexus, or the Bloons Modding Discord. Downloading random files may corrupt saves or trigger antivirus.

Save File Safety

BTD6 uses online validation for progression

• Use Steam Offline Mode if testing experimental mods
• Back up your save file located in:
  Steam/userdata/[YourSteamID]/960090/remote

How to Fix Crashes in BTD6 with MelonLoader

If BTD6 crashes while loading mods:

Check the Log File

• Go to MelonLoader/Logs
• Open latest.log
• Search for:
  • [ERROR]
  • [CRITICAL]
  • Exception

This will often reveal the problem mod or missing dependency.

Use the Launch Argument

Add this command in Steam Launch Options:

--no-mods

If BTD6 launches successfully with this enabled, it means one of your installed mods is the cause. Remove or disable mods one by one until the issue is resolved.

Update ModHelper

If you recently updated MelonLoader, you may also need a newer version of ModHelper to match.

Final Thoughts

Learning how to use MelonLoader BTD6 is really about understanding:

• Correct installation
• Folder organization
• Required frameworks like ModHelper
• How to install and manage mods safely
• How to use the log file for troubleshooting

Once you master these steps, you can enjoy advanced custom towers, difficulty mods, visual upgrades, and more in BTD6.

To download or update MelonLoader, visit:

• https://melonloader.pro/
• https://melonloader.pro/download-melonloader/