Pearl Harbor Expansion: A VNR Submod

If you liked this item, please rate it up on Steam Workshop page.

Author: MrPunk

Last revision: 19 Dec, 2023 at 12:38 UTC (1)

File size: 186.45 MB

On Steam Workshop


An official submod for Vanilla Navy Rework
Note that this is designed for historical mode, any alternative path of Japan or US may cause problems, you have been warned.
By default, the system activates in Jan 1941, or Jun 1940 if China is conquered.
RT56 is tested and proved to be compatible. But please don’t ask me for compatibility of other overhaul mods, I don’t have time or intention to make that happen.


Yesterday, December 7, 1941—a date which will live in infamy—the United States of America was suddenly and deliberately attacked by the naval and air forces of the Empire of Japan.

The attack on Pearl Harbor is not only one of the most important events in America’s history, but also marks a turning point of the Second World War. The submod aims at enriching the most overlooked part in base game, trying to add more immersion to the Pacific theatre. It expands contents about Japanese preparation of the attack and how the US reacted after it.


-A decision & event driven chain, no effect on national focus or any base game contents.
-A decision system of Japanese preparation of attack with 3 planning stages.
-Play Nagumo Chuichi in history, make the decision to launch the potential third wave of attack and cripple American oil depot.
-A set of post-Pearl-Harbor decisions (Greater East Asia War) for Japan
-A decision system of American reaction to Japanese growing ambitions in the Pacific pre-war.
-A Pacific-War decision system for USA to gradually gain power after the initial humiliated defeat and ultimately defeat Japan.
-Scripted peace for historical and alter-historical endings of the Pacific War
-Operation Downfall and Hondo Kessen decision system



Required DLC:

These DLC should be installed in order to use this item.

Hearts of Iron IV: Man the Guns

Old revisions of this mod are available below. Click the link to download.