This article deals with the specifics of modifying Galactic Civilization 2's XML files to create mods of the game. All of these files can be edited with any simple text editor (Notepad for example). All XML files discussed here are, in an English version of the game, located in: \galciv2\data\English A warning, though: DO NOT modify the XML files in the Metaverse directory (galciv2\metaversedata), as that will result in all Metaverse games being "cheat" flagged.