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Civilization IV has seven religions Religion4.png: Buddhism, Christianity, Confucianism, Hinduism, Islam, Judaism, and Taoism. They all have the same effects, differing only in what technologies they require and the material needed to speed production of their Cathedral (see the table). Also, the later religions (Confucianism, Christianity, Taoism, and Islam) each get a free Missionary in their holy city.

Religion Table[]

Religion
Adjective
Required tech Cathedral 2×speed for
Cathedral
Shrine
Buddhism (Civ4).png Buddhism
Buddhist
Meditation
Meditation
Buddhist Stupa
Buddhist Stupa
Copper (Civ4).png
Copper
Mahabodhi
Mahabodhi
Christianity (Civ4).png Christianity
Christian
Theology
Theology
Christian Cathedral
Christian Cathedral
Stone (Civ4).png
Stone
Church of the Nativity
Church of the Nativity
Confucianism (Civ4).png Confucianism
Confucian
Code of Laws
Code of Laws
Confucian Academy
Confucian Academy
Copper (Civ4).png
Copper
Kong Miao
Kong Miao
Hinduism (Civ4).png Hinduism
Hindu
Polytheism
Polytheism
Hindu Mandir
Hindu Mandir
Marble (Civ4).png
Marble
Kashi Vishwanath
Kashi Vishwanath
Islam (Civ4).png Islam
Islamic
Divine Right
Divine Right
Islamic Mosque
Islamic Mosque
Marble (Civ4).png
Marble
Masjid Al-Haram
Masjid Al-Haram
Judaism (Civ4).png Judaism
Jewish
Monotheism
Monotheism
Jewish Synagogue
Jewish Synagogue
Stone (Civ4).png
Stone
Temple of Solomon
Temple of Solomon
Taoism (Civ4).png Taoism
Taoist
Philosophy
Philosophy
Taoist Pagoda
Taoist Pagoda
Copper (Civ4).png
Copper
Dai Miao
Dai Miao

Founding of Religions and Holy Cities[]

The first civ to discover the tech listed in the table above will found the given religion in one of its cities. This city will then be the holy city of that religion, represented by a starred religious icon on the world view. The selection of the holy city from among all cities is partly random, but the algorithm will favor cities:

A holy city receives +5 Culture (Civ4).png (instead of the standard +1 Culture (Civ4).png). A Great Prophet may construct a Religious Shrine in a religion's holy city. If a holy city is razed, then the religion will continue to exist (provided that it has spread to other cities), but the holy city will be gone for the remainder of the game.

Spread of Religion[]

Religion can spread in two ways: via Missionaries, and automatically. Religions will only spread automatically to cities which do not have any religion present. Furthermore, automatic spread will happen only if there is trade access (not necessarily a trade route, but the potential for one) between the city and the holy city of some religion. Factors that increase the likelihood of automatic spread are low distance to the holy city, and the presence in the holy city of that religion's shrine.

Otherwise, spread of religion is done by way of Missionaries. Missionaries are units that civs may build in a city of a particular religion. The Missionary may then move to another city, and if its religion is not present there, attempt to spread its religion. The attempt to spread religion will automatically succeed if there is no religion present. For cities with one or more religions already present, there is a random chance that the Missionary will fail. This chance is about 9% per religion present for your own cities, or 12% for foreign cities:

#Religions already present 0 1 2 3 4 5 6
Chance of failure (own city) - 9% 18% 26% 35% 43% 52%
Chance of failure (other city) - 12% 24% 36% 48% 60% 72%

Effects of Religion in a City[]

When a city has a religion present, the following effects apply:

Effects of religious civics:

State Religion[]

When a civilization owns one or more cities containing any particular religion, the civ can choose to make that religion its state religion, which, like changing civics, will result in temporary anarchy for leaders who do not possess the Spiritual leader trait or the Cristo Redentor world wonder. Adopting a state religion gives +1 Happiness (Civ4).png to all cities containing that religion and allows access to the effects of religious Civics.

Effects of State Religion in a City[]

The following effects apply in each city with the state religion present in it:

  • +1 Happiness (Civ4).png
  • +2 Happiness (Civ4).png if city has a Cathedral of the state religion
  • +1 Culture (Civ4).png (or +5 Culture (Civ4).png for the holy city)

Effects of religious civics when state religion is present:

The following wonders concern state religions:

Other Effects of State Religion[]

A civ's state religion also has these effects that are not related to cities:

  • Better relations with AI opponents who have the same state religion
  • Worse relations with AI opponents who have differing state religions. Bonus worse relations when the a Civilization conquered the Holy city of an enemy Civilization and razed it to the ground. the relations states "You razed the holy city."
  • A civ's state religion on the turn when it completes the Apostolic Palace determines the religion the Apostolic Palace is founded in

Other Religions[]

  • In the Rise of Rome campaign, all empires have their respective pagan religions (Rome, Egypt, Greece, etc.).
  • The Omens campaign consists of a survival battle between the Protestants and the Catholics
  • Other campaigns include ancient Asian, Mesopotamian, and Mesoamerican pagan religions

Buildings[]

Religion Monastery Temple Cathedral Shrine
Buddhism (Civ4).png Buddhism

Buddhist Monastery

Buddhist Temple

Buddhist Stupa

Mahabodhi

Christianity (Civ4).png Christianity

Christian Monastery

Christian Temple

Christian Cathedral

Church of the Nativity

Confucianism (Civ4).png Confucianism

Confucian Monastery

Confucian Temple

Confucian Academy

Kong Miao

Hinduism (Civ4).png Hinduism

Hindu Monastery

Hindu Temple

Hindu Mandir

Kashi Vishwanath

Islam (Civ4).png Islam

Islamic Monastery

Islamic Temple

Islamic Mosque

Masjid Al-Haram

Judaism (Civ4).png Judaism

Jewish Monastery

Jewish Temple

Jewish Synagogue

Temple of Solomon

Taoism (Civ4).png Taoism

Taoist Monastery

Taoist Temple

Taoist Pagoda

Dai Miao

Further reading[]

http://www.civfanatics.com/civ4/strategy/religions.php

Civilization IV [edit]
WarlordsBeyond the SwordColonization

Buildings (Unique) • CivicsCivilizationsErasLeaders (Traits) • ReligionsResourcesSoundtrackTechnologiesTerrains (Tile Improvement) • Units (UniqueClassPromotions) • Wonders

Coin (Civ4).png CommerceCulture (Civ4).png CultureBread (Civ4).pngFoodEspionage (Civ4).png EspionageHappiness (Civ4).png HappinessHealth (Civ4).png HealthPower (Civ4).png PowerHammer (Civ4).png ProductionBeaker (Civ4).png Science

† Total conversion remake of the game Sid Meier's Colonization using Civilization IV engine
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