The Historical Plausibility Project is a mod for Hearts of Iron 3 and its expansions with the goal of helping the game reach its full potential as a half-historical / half-sandbox game. The mod features a vastly improved AI, historical OOBs for every nation, complex internal politics, a reworked leadership system, the Soviet invasion of Poland, HOI2-style doctrines, capital ship modernizations, over 6,000 unique unit pictures, and much more. The HPP is the result of the efforts of the HPP team's five members of Slan, TheBromgrev, TZoli, SSmith, and Nephandus from the ParadoxPlaza forum, and its main forum is its official ParadoxPlaza forum, which Paradox requires proof of game ownership to enter. The HPP's forum contains the mod's FAQ, Submod downloads, country guides, and small hotfixes. In addition, part of the mod's previous work to the East Asia part of the map is now in the Their Finest Hour base game for everyone to enjoy.

Report abuse HPP HOI3 Final Version V1.0
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Jul 9th, 2012
1.98mb (2,072,285 bytes)
2,028 (1 today)
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This version of the mod is the final HOI3 1.4-compatible version. It is not compatible with any of the expansions. A pdf manual that summarizes the major changes the mod made to the game is provided separately and is accurate for this version of the mod. Please note that this version of the mod will NOT work in multiplayer. Install instructions below:

Install Instructions:

  • Before downloading anything, if you have Windows 7 or Vista, then you WILL NOT be able to install the mod if the base game is installed in the Program Files directory. You must copy your game folder to a directory outside of Program Files. Both of those OSs have security "features" that undo changes to any folders inside of Program Files, and moving the game's folder out of that directory will prevent any install problems.
  • Download the appropriate version
  • Find your '\Hearts of Iron 3\mod' folder!
  • If you have a previous installation, you will need to delete that. Remove the '\HoI3\mod\HPP' folder and the '\HoI3\mod\HPP.mod' file! (If you didn't have a previous installation, then you obviously don't need to do this.)
  • Unrar the files! (The core files go to the '\Hearts of Iron 3\mod' folder)
  • Run the mod with the launcher, select 'Historical Plausibility Project' in the "Select mod to play" list, hit "Start HoI3", and start the game.
  • Have fun!
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HPP HOI3 Final Version V1.0
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Released 2010
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