If you're also in the market for more Hearts of Iron IV mods (they're all free, don't worry), check out this here list. You can grab Old World Blues from the Steam Workshop and watch one of our more popular timelapses featuring the mod in the video below. Knowing how volatile some Fallout factions are, alliances might not always pan out the way you want them to.
Old World Blues also introduces 'a dynamic war system that ensures that the AI nations act on their own, respond to aggression, and strike when their opponents are weak' to Hearts of Iron IV, so you will want to watch your back. Caps are also part of the game's economy, as is scavenging. stats and perks replace HoI 4's leader traits, while custom focus trees, icons, and 3D models further push immersion. In the meantime, navigable rivers provide additional access paths to different spots on the map. Mountain ranges act as impassable terrain that you'll have to work around or use to defend yourself. Old World Blues replaces the world map from vanilla Hearts of Iron IV with a custom map of North America.
