Songs of Liberty
A collection of three classic American patriotic songs, newly arranged by Paradox Interactive. This pack is immediately available to all who purchase Expansion Pass 3.
The third Expansion Pass for Hearts of Iron IV opens new fronts for generals, including changes to industrial and diplomatic parts of the game, as well as a host of changes for many nations.
The highlight of Expansion Pass 3 is the long awaited rework of the United States, the “arsenal of democracy” waiting to bring its power to the front. Explore new alternate histories and strategic challenges in this package of fresh content for Hearts of Iron IV.


A collection of three classic American patriotic songs, newly arranged by Paradox Interactive. This pack is immediately available to all who purchase Expansion Pass 3.

This focus pack is centered on Romania and its particular challenges as an oil rich minor power, often swayed by the giants around it.

This expansion focuses on the Americas, with a special dedication to the United States and its entry into the wider World War. Guide the United States through the Depression to build an industrial giant that can take on the world or guide Canada through this tumultuous era and carve out a place for themselves with their reworked content.
If you are looking for something a little more tropical, jump in as one of the Central American or Caribbean nations and forge your path ahead in the USA’s backyard. Additional content will be available for Mexico, as well as changes to Industry, Army Building, and Air landings.

This theater pack includes new diplomatic options, including the League of Nations, as well as new national content for Burma, South Africa, Yugoslavia and Venezuela.

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