Roman Empire

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Empire rankRoman Empire
Roman Empire.png
Primary culture
Roman (Lost Cultures)

Capital province
Rome (118)

Feudal Nobility Government monarchy.png

State religion

Technology group
WesternWestern technology group
Roman ideas
Traditions.png Traditions:
+5% Discipline
+1 Yearly legitimacy

National unrest.png Pax Romana

−1 National unrest

Diplomatic reputation.png Legacy of Rome

+2 Diplomatic reputation

Stability cost modifier.png S.P.Q.R.

−20% Stability cost modifier

Land force limit modifier.png The Roman Legions

+15% Land force limit modifier
+10% Infantry combat ability

Production efficiency.png Roman Architecture

+20% Production efficiency

National tax modifier.png Imperial Bureaucracy

+10% National tax modifier

Core-creation cost.png Imperium Sine Fine

−20% Core-creation cost

Idea bonus.png Ambition:

+33% National manpower modifier

Historically, the Roman Empire was the dominant power in Europe in the first few centuries AD. While the Western Roman Empire ceased to exist long before the era covered by Europa Universalis IV, the Eastern Roman Empire continued to survive as Flag of Byzantium Byzantium. Any Christian or Pagan nation other than the Holy Roman Empire or the Papal State can restore the Roman Empire by decision after re-conquering most of the historical Empire. The other way to play the Roman Empire is to restore the Roman Empire as Byzantium in Crusader Kings II and converting the save to EU4 using the Europa Universalis 4 Save Converter.

Ironically the Roman Empire can reform into the Flag of Holy Roman Empire Holy Roman Empire by revoking the privilegia.

Additionally, the Roman Empire has a very special effect upon formation, as it will convert all provinces of the nations primary culture to Roman Culture and set that as the primary culture. This is unique because this is the only way to rediscover a lost culture aside from custom nations and console commands.



Execute decision.pngRestore the Roman Empire

Not since the Romans in the second century has one empire commanded the entirety of the Mediterranean and beyond. If we claim this land, we can scoff at whatever pretenders may claim in Constantinople or the Holy Roman Empire and proclaim ourselves the true successors of Rome.
Potential requirements

The Roman Empire does not exist.
The country:

If the country is AI-controlled then it


The country:

Needed provinces to form the Roman Empire


The country:

If the country is “The Hanseatic League”, restore its name to “Roman Empire”
  • has all owned provinces of its Primary culture.png primary culture become Roman culture.
  • changes its primary culture to Roman.
  • becomes an Empire rank empire.
  • gains Yearly prestige.png50 prestige.
  • moves its capital to Roma (118).
  • gets a core on Roma (118).
  • gets the modifier “Increased Centralization” for 20 years with the following effects:
    • Autonomy.png−0.05 monthly autonomy change,
    • National unrest.png+1 national unrest.

All your owned provinces will cease to be part of the Holy Roman Empire.

The country removes all its provinces from the Holy Roman Empire.

If the country does not have custom ideas


Mare Nostrum icon
Mare Nostrum
Restore the Roman Empire and own the entire Mediterranean and Black Sea coast lines.
Country guides

Central African technology group Central African.png Kuba.png KubaMutapa.png Mutapa
East African technology group East African.png Ethiopia.png EthiopiaMogadishu.png Mogadishu
Muslim technology group Muslim.png The Mamluks.png MamluksMorocco.png MoroccoTlemcen.png TlemcenTunis.png Tunis
West African technology group West African.png Air.png AirMali.png Mali

Eastern technology group Eastern.png Jerusalem.png Jerusalem Kharabakh.png Kharabakh
Muslim technology group Muslim.png Afghanistan.png Afghanistan Ajam.png Ajam Arabia.png Arabia Ardabil.png Ardabil Hisn Kayfa.png Hisn Kayfa Hormuz.png Hormuz Oman.png Oman Mushasha.png Mushasha Timurids.png Timurids Qara Qoyunlu.png Qara Qoyunlu
Indian technology group Indian.png Assam.png Assam Bahmanis.png Bahmanis Bengal.png Bengal Orissa.png Orissa
Chinese technology group Chinese.png Bali.png Bali Brunei.png Brunei Dai Viet.png Dai Viet Japan.png Japan Khmer.png Khmer Korea.png Korea Majapahit.png Majapahit Malaya.png Malaya Pagarruyung.png Pagarruyung Pasai.png Pasai Sunda.png Sunda
Nomadic technology group Nomadic.png Jianzhou.png Jianzhou Uzbek.png Uzbek Mongolia.png Mongolia

Western technology group Western.png United States.png United States
Mesoamerican technology group Mesoamerican.png Maya.png Maya
North American technology group North American.png Caddo.png Caddo Cherokee.png Cherokee Iroquois.png Iroquois

Andean technology group Andean.png Chachapoya.png Chachapoya Cusco.png Cusco Muisca.png Muisca
South American technology group South American.png Mapuche.png Mapuche