Hearts of Iron IV (HOI4), national focus trees are the primary mechanical driver of a nation's historical or "alt-history" progression. Creating these trees manually requires writing complex scripts in .txt files, managing precise grid coordinates, and handling localization files.
HOI4 Modding Tool: A visual drag-and-drop editor for trees, ideas, and events. hoi4 focus tree maker
Instead of writing lines of code like this: Hearts of Iron IV (HOI4), national focus trees
ai_will_do = factor = 100 modifier = factor = 0 NOT = has_manpower = value = 50000 Hearts of Iron IV (HOI4)