How to create/use a mod?

[pkt-zer0]

Originally Posted by bman654

From what I can tell from looking at some of the Russian mods, you put your modified files in a .kfs file in the data\mods folder. Is that all there is to it? Does it require starting a new game or will it work on existing savegames?

That's all there is to it, it seems. In some cases, the changes are not effective on existing savegames (though just going to another map might enable them - can't try that in the demo), in other cases they are. Easiest way to test is starting up a new game without the mod, save, add the mod, reload, see what happens.