.
├── common # Common of project
| └── ai_ # AI of game
| └── bookmarks # Scenarios
| └── buildings # Buildings
| └── countries # Countries ID
| └── defines # Defines of Lua
| └── national_focus # National focal points of major countries
| └── on_actions # Actions
| └── opinion_modifiers # Opinions of countries according to the story / ideology
| └── scripted_ # Scripts
| └── state_category # Definition of state construction spacing
├── events # All events (Generic and Specific)
├── history # History file
| └── countries # Definition of the initial content of the countries
| └── units # Definition of the initial units of countries
| └── states # Content and typing of states
├── interface # Interface of mod
├── music # Own music
NOTE: All contents belonging to the mod are changes of the standard game (Hearts of Iron IV)