How to use custom images for your factions
To use your own images you need to put them into your "My Documents\My Games\GalCiv3\Factions" folder. Having images with the same name in different folders may cause problems. There are four subfolders for:
Folder name: LeaderBGs
Folder name: LeaderFGs
Folder name: Portraits
Folder name: Logos
Factions can be created in two ways
1. Faction Creator in the New Game tab
Click on “Create Custom Race”
2. Make a MOD of the faction
This way gives more ability to customize some things that are not in the game faction editor. But is harder for many as it involves using a text editor on multiple files as well as management of those files.
Crusade replaced the faction designer with the Civilization Builder, which offers powerful new tools for creating custom factions.