I want to add a game rule that's just for fun which can be changed at any time, and it would be to set every nation's ruling party to a certain ideology. Not only could this be used to spice up games for people who choose to do it, it would also be great for helping me test things out.
My idea for doing this is making the game check every country that has 1 state or more and then saying set_ruling_party = something. But I don't know how to go about that.