What are the file extensions for the different games editor files?
Each Civilization III game has a different extension for their scenario file. For Vanilla, it is .bic, for Play the World, the extension is .bix, and for Conquests, it is .biq. As mentioned earlier, the editors are backwards-compatible only, meaning they can open earlier games’ files, but not newer ones (for example, the Play the World editor can open by .bix and .bic files).