Step 1: Setup Game folders
Before you start working with the Editor you should set the Game-Path of the C&C Edition you want to edit by pressing the “Games” Button. There you can also add any Custom Mod Folder by pressing “Add custom Mod”

If you add a custom Mod, the Editor takes a Snapshot of the original ini-Files. More info about Original files handling.
Step 2: Locate the Game Files
- Find your C&C installation folder.
- Example paths:
C:\Westwood\Tiberian Sun\
- Or the folder where your mod is installed (if using a standalone mod).
- Example paths:
- Locate the following files:
rules.ini
– controls game logic, unit stats, weapons, building behavior, etc.art.ini
– handles graphical definitions like SHP animations, voxel models, and effects.ai.ini
– handles the artificial intelligence.
If these files don’t exist, the game might be reading from a .mix
archive. You can create a new file in the C&C Rules Editor or you can extract them using tools like XCC Mixer.

Step 3: Understand File Structure Basics
rules.ini
Sections:
[General]
– Game-wide settings.[VehicleTypes]
– List of vehicles (same pattern for infantry/buildings).[GDI]
,[Nod]
– Faction-specific settings.[XXX]
– Individual unit/structure definitions.
Example unit:
[GDIAPC]
Name=APC
Image=APC
Armor=light
Primary=Minigun
Cost=600
art.ini
Sections:
[XXX]
– Matches theImage=
tag fromrules.ini
.- Defines graphical settings like voxel files, animations, shadows.
Example:
[APC]
Voxel=yes
Remapable=yes
Step 4: Save and Test
- Save the INI files in the game-folder
- Launch the game.
- Play a skirmish or custom mission to test your changes.
Original files handling
The Rules Editor always shows the “original” values in a separate column. It takes these original values from the original file (you can see the path to the original file under the menu bar of the Rules Editor)