Tutorial:MTSSims 3 Object Modding

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Modding objects is one of the most fun areas of Sims3 modding but it can be hard to find out where to start. This guide exists to pull together various topics about object modding making it easier to find the information and tools you need to make modded objects.


  • The tutorials vary from beginner level to advanced, however, even for the basic tutorials, some basic knowledge on how to use specific Sims3 tools, programming environment and code editors is recommended.
  • Keep in mind that while these tutorials try to cover the required information, there is still a creative element required that cannot be learned by reading a tutorial alone. When coding the objects in the examples you need to try and understand the principles used so that you can apply them to another object.

Recommended Reading

Sims3 scripts are made using the C# Programming Language and though you can use the online help and error codes messages to help you along it is a good idea to familiarise yourself with the C# Language.

Visual Studio 2008

The same applies for your 3D modeling program, especially those who plan to use Blender 3D instead of Milkshape, since most of the meshing procedures are given using Milkshape. If it's your first time with 3D modeling software, then we recommend you have a look through the Object Creation tutorials first.

Programs Needed

Programming Tools

Sims3 Tools

3D Modeling Programs (Pick One)

  • Milkshape 3D is the most used 3D modeling software in the Sims community. It's not free, but not terribly expensive either.
  • Blender 3D is a free alternative - the UI of the program can be intimidating for new users but it is an extremely powerful 3D editor.

Tutorial Sections:


1. Setting up

Setting up your Programming Environment
Difficulty Beginner

Icon TS3Modding.png

2. XML Tuning Modding

Setting variables for object behaviour
Difficulty Beginner

Icon TS3Modding.png

3. Immediate Interactions

Scripting Immediate Interactions
Difficulty Beginner

Icon TS3Modding.png

4. Object Interactions

Scripting Sim to Object Interactions
Difficulty Intermediate

Icon TS3Modding.png

5. Custom Animations

Adding custom animations to your object
Difficulty Advanced

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