Imperator To CK3 Converter

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Imperator To CK3 Converter



Supports Imperator 1.5 and CK3 1.1

Steam workshop

This converter will allow you to take a game from the end of Imperator Rome and convert it into a playable CK3 save, continuing your game. It will be compatible with the CK3 to EU4, EU4 to Vic2, and Vic2 to HoI4 converters, allowing the player to play a continuous megacampaign from Imperator through HoI4.



  • Imperator with optional expansions, latest version is required.
  • Crusader Kings 3, with optional expansions, latest version is required.

Incoming Savegames[edit]

  • Converter supports compressed, as well as debug mode save games.
  • Ironman saves are supported.

Outgoing Mod[edit]

  • Converter will produce a CK3 mod.
  • Using the front-end, the mod will be copied to CK3 mod/ directory located in users' documents, usually C:\Users\User\Documents\Paradox Interactive\Crusader Kings 3\mod.
  • Without front-end (running the converter manually), mod will be exported to converter's output/ folder, and will have to be moved manually by user.

Frequently Asked Questions[edit]

Q: Is this the official converter?
A: This converter has been done by the same team that specializes in other Paradox converters: CK2->EU4, EU4->Vic2, Vic2->HoI4, CK2->EU3, EU3->Vic2, Vic2->HoI3, CK3->EU4. It is not official, but the team is experienced.

Q: I have an ironman save. Can it be converted?
A: Yes.

Q: What about mods?
A: Unless they change how cultures, religions or flags work, sure, use mods. Total map overhauls are not supported (of course), and whatever new cultures and religions are brought by the mod - you'll have to add manually in the files in configurables folder.

Q: How can I customize my game after converting?
A: Use the guide in after_converting.txt in the converter subdirectory. Scan through configurables/ folder and look into the myriad of configuration files - a great majority of these files is intended to be modified by users to achieve specific conversion results.

Quick Troubleshooting[edit]

Q: When starting conversion, conversion immediately ends, not producing anything.
A: Inside the converter folder there is a file called VC_redist.x64.exe. This is Microsoft's C++ redistributable package the converter relies on. Install it and re-run the conversion.

Q: I loaded my mod, but nothing changed. What's wrong?
A: Is the mod enabled in the launcher? If so, then CK3 refused to load it due to possible errors. Respond to the forum thread and upload your save, log.txt and errors.txt so we may debug.

Q: The country crashes upon selecting a country and pressing play (at map selection)
A: Upload your save, log.txt and errors.txt to the forum thread for further study.

Q: The game forbids me to select nations.
A: Upload your save, log.txt and errors.txt to the forum thread for further study.

Versions and Change Logs[edit]

  • 0.1 Augustus - First Barebones Release - 2020.10.11

Detailed change logs can be seen at linked forum threads above.


IhateTrains - Lead, programming, data files, testing
Idhrendur - Setting up the project, sanity checks and review
Zemurin - Review, advice
lukaslunt - Data files
comagoosie - librakaly save melter