1.3.x Integration and Core Hotfix - Religion, Culture and Vassal States

by OhXier·v1.0.0·Updated 2026-06-18

1.3.x 整合与核心热修——宗教,文化与附庸国

About this mod Machine translation

*Everyone is welcome to join the eu5 exchange group (and mod discussion).

  • Group number: 1077684056. This group aims to create a harmonious, friendly, high-quality, cute and caring eu5 community.

It is recommended to use it with the following mods (click to jump):

  • Economic overhaul
  • Fix the endless war of independence
  • Allow divorce

Why make this mod?

In version 1.2, since vassals of the same overlord share the same cd for forced conversion of religion/culture, players can only forcefully convert the culture/religion of one vassal within 10 years. At the same time, in version 1.2, the system will dynamically determine the core status of the territory, and those plots with less than 50% of the mainstream and culturally accepting population will lose their core. Additionally, in the current version, many vassal types suffer considerable cabinet efficiency penalties. The content of these new updates makes player expansion extremely slow and pointless, which only makes the game quite boring at a slow pace.

What specific effects does this Mod have?

In order to solve the above problems, this mod has made the following changes:

-Changed the base annexation value of vassals to 75 (the original changed this value to 200 in 1.2)

-Change the armistice period caused by peace treaties to 3-10 years

-Changed the effects of "integrated" areas to: maximum control +15%, monthly control +0.05%, local separatism +10%. The -10 debuff on the local population assimilation speed has been cancelled. This brings the integrated areas in the game very close to the core areas.

-Cancel the royal power reduction of the independent riding area brought by the economic foundation of the vassal country to solve the problem of too low royal power after 1.2.

  • Remove the limit on the number of people who can add an accepted culture/add a compatible culture. Now you can freely choose to accept/add a compatible culture to any culture, no matter how small their population size is.
  • Changed the shared cd of "Forced vassal to change religion" and "Forced vassal to change culture" to 0. At the same time, the mechanism that the vassal country becomes a vassal for ten years can be used by the suzerain country to use the interaction mechanism (10 years is still displayed in the game because the separate cd of the vassal is still ten years, but the effect of the shared cd does take effect)

-This Mod cancels the cabinet efficiency reduction for all vassal types except "National Bank".

The efficiency reduction of each vassal cabinet in the original version:

Fiefs: -50%; Dominions: -40%; French fiefs: -35%; National Bank: -25%; Uchibey: -25%; Vassal States: -20%; Grand Samanta: -20%; Chief Grand Samanta: -20%; Hanseatic League members: -10%; Border States: -10%; Chieftains: -10%; Samantas: -10%;

This mod: Among the above vassals, only the -25% discount of "National Bank" is retained, and all others are removed.

-This Mod will remove the missionary and assimilation speed penalties for all vassal states. (In the original version, all vassals had -50% culture washing speed and -50% missionary speed penalty by default)

-Slightly increase the speed of province integration, region integration and location natural integration.

-Made a new annexation speed linear increase, now every 1000 cultural influence will bring you 100% annexation speed, capped at 1000%. In order to deal with the problem in the new version, pdx locks the upper limit of the annexation speed bonus at 100% compared to the population size of the vassal country.

-After the Roman Empire DLC was updated, the effects of Latin-Roman values ​​made the majority of players extremely dissatisfied. I changed their effects to the following effects:

-Latinization:: Sell Efficiency +2.50%; Expected Diplomatic Spending -20.00%; Allow Latin Cultural Movements; Heretic Tolerance +2.0; Pagan Tolerance +1.0

  • Roman Sect:: Stability investment cost -20.00%; Orthodoxy tolerance +5.0; Tax efficiency +10%; Cultural …

Install & use Install: follow the bundled instructions

  1. Unzip the archive from playbuff and read the bundled readme / instructions first.
  2. There is no universal mod manager for this game: some mods replace game files directly, some go into a game-specific Mods folder, and some need a game-specific community loader or tool first — follow the bundled readme.
  3. Place the files exactly as the readme says; mods with listed dependencies need those installed too.
  4. Launch the game to confirm it loaded; some games require enabling mods in settings or an in-game mod menu.

Install locations vary a lot between games and mods — the bundled readme is the most reliable guide.

File & checksum

Filename
3721516330_1.3.x Integration Hotfix- core, treaties & subjects.zip
File size
572.4 KiB