Muck – How to Mod

A complete guide to modifying your copy of Muck. (It’s good to have some experience with C# and the Unity Libraries before following this guide).

How to Mod Guide

Step 1: Install dnSpy

dnSpy is a tool that will allow you to decompile and edit the game’s code. You can get it from its GitHub page.

After installing we can move onto the next step.

Step 2: Locate Muck’s ‘Assembly-CSharp.dll’ File

The Assembly-CSharp.dll file contains the game’s code that we want to modify. In order to modify it we will need to open it in dnSpy. Click ‘File’ -> ‘Open’ and then navigate to where your copy of Muck is stored. (Default location should be: Program Files (x86) > steam > steamapps > common > Muck)

Inside of your Muck folder, you want to then navigate to: Muck_Data > Managed > Assembly-CSharp.dll. After opening the file, dnSpy should look something like this:

Step 3: Understanding dnSpy

dnSpy displays the file’s you can edit on the left. On the right it displays the decompiled code from the currently selected file.

We want to edit the Assembly-CSharp file, so click on the drop down to display what’s inside.

All of the scripts written by the creator (Dani) are inside of ‘{ – }’, so we need to open that up.

All of the scripts in the game are now displayed on the left.

dnSpy color codes everything, so we know what means what. Scripts are green, Methods / Functions are orange, and Properties / Variables are purple.

Step 4: Modding The Game

Phew! We’re finally ready to start modding.

For the sake of this being a tutorial, I will be showing you how to do something simple, giving the player the ability to fly! (Well not really, we’re just going to make them jump SUPER high)

Scroll down through all the scripts until you find one called, “PlayerMovement”. As the name suggests, this will let us modify the player movement.

Open it up, and you’ll see all of the code for the script. But how can you modify it? It doesn’t seem like you can type in there, but that’s okay. Right click in the code view, and you will see a few options.

The main two that we will be working with are “Edit Class” and “Edit Method”.

“Edit Class” Will allow you to edit the entire class, (Not the whole script), while “Edit Method” will allow you to edit individual methods in the script.

Inside of the “Player Movement” script, look for the Jump() method and open it.

Right click in the code view and click “Edit Method”. A code window will pop up and allow you to modify the code. Now there seems to be an error here, even though we haven’t edited anything.

(The red colored text signifies an error)

In order to fix this issue, we need to change “Object.Instantiate” to “GameObject.Instantiate”. This is a small hiccup caused by dnSpy that you may run into in the future.

Now how can we make the player jump super high? Well let’s take a look at the code. The part that makes the player jump seems to be on this line here: “this.rb.AddForce(Vector3.up * d * 1.5f, ForceMode.Impulse);”. Let’s change the 1.5 to a larger number like maybe, 50. “this.rb.AddForce(Vector3.up * d * 50f, ForceMode.Impulse);”

Step 5: Overwrite Assembly-CSharp.dll

In order to save your code, you need to hit “Compile” in the code window. If you don’t have any errors, the window should close. This won’t save your changes though, in order to save them you need to “File -> Save All -> Okay” Congratulations! You have created your first mod for Muck. Boot up the game and try to jump. (You go VERY high lol)

But yeah that’s almost it. Most of the fun in Muck comes from the online multiplayer, but these mods are all client side. So for your friends to see you jump that high, they will need to replace their Assembly-CSharp.dll file with yours.

Helena Stamatina
About Helena Stamatina 2707 Articles
My first game was Naughty Dog’s Crash Bandicoot (PlayStation) back in 1996. And since then gaming has been my main hobby. I turned my passion for gaming into a job by starting my first geek blog in 2009. When I’m not working on the site, I play mostly on my PlayStation. But I also love outdoor activities and especially skiing.

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