Here is a modding guide created by Explo to help you replace the models and textures in the game.
Requirement Tools
[Unity Asset Bundle Extractor][github.com]
To extract, and replace assets. [MANDATORY]
[Asset Studio][github.com]
To view models, and export into .FBX format. [Optional]
How to Replace Models & Textures
Setup
Create two new folders anywhere on your computer,
one for unmodified files, and a second for modified files.
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STEP 2.
Navigate to the Madness: Project Nexus folder
Step 3.
Open AssetStudioGUI.exe
Step 4.
Open the Madness: Project Nexus folder inside Asset Studio
♦—Important—♦
Follow the steps corresponding to the thing you are replacing.
If you are replacing a model, skip the “Texture” section and go directly to “Model”
Textures
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Step 2.
Open the original file, this is necessary for importing stage.
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Make note of what this file is.
Step 3. Open and modify your texture, then save it.
Importing Texture
Open Asset Bundle Extractor. (From now on referred to as UABE.)
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Step 2.
Make a BACKUP of the Original asset, and place it in your “Vanilla” folder.
(That’s the one I told you to make note of.)
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Step 3.
Open the BACKUP file.
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Step 4.
Find the Texture you changed, then click on “Plugins“, and under plugins on “Edit“.
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Step 5.
Click on “Load” next to Texture option. Don’t touch anything else.
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Then find your modified texture, and open it.
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Then confirm the editing.
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Applying Ingame
Save the modified file into your modded folder.
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Step 2.
Replace the sharedassets file in the game directory.
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Thanks to Explo☄ for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.
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