Parthia (Formable)

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This article is about the Scythian culture group formable. For the identically named Macedonian cultured country that exists at the start of the game, see Flag of Parthia Parthia.
Regional powerParthia (Formable)


Parthian (Iranian)

Capital province
Nisaia (6657)

Monarchy (Autocratic)

Military traditions

Parthia is a formable nation that can be created by a Scythian culture group country that takes control of the Parthian region. Historically, the Iranian Parthian kingdom was formed by the Arsacid dynasty of Flag of Parnia Parnia, who conquered the Flag of Seleukid Empire Seleukid satrapy of Flag of Parthia Parthia when it rose in rebellion in 238 BC. While the Arsacids would at first be forced to become a vassal of the Flag of Seleukid Empire Seleukid Empire, they would soon take advantage of Flag of Seleukid Empire Seleukid weakness in the wake of dynastic disputes and crippling defeats by the Flag of Rome Romans to declare independence and seize control over all of Greater Persian region, restoring Iranian rule for the first time since the fall of the Flag of Achaemenid Empire Achaemenid Empire and forming an empire stretching from Mesopotamia to Ariana. With a syncretic culture combining both a revival of older Iranian traditions and Hellenistic influence from the Flag of Seleukid Empire Seleukids and a decentralized realm marked by the presence of many autonomous vassal kings, the Parthian Empire would be one of the fiercest rivals of the Flag of Rome Romans in the Middle East until their overthrow by the Sassanids.

Parthia can be formed by any county in the Scythian culture group, primarily intended for the Dahaen tribes of Flag of Parnia Parnia and Flag of Zanthia Zanthia but in principle formable by any of the Scythian kingdoms of the steppe if they migrate to the Parthian area. Flag of Dahae Dahae is a commonly formed intermediate tag, as most potential forming nations will either begin or pass through that area, which is more easily conquered than the required provinces for Parthia under the Flag of Seleukid Empire Seleukid satrapy of Flag of Parthia Parthia as well as giving claims on all the territories needed to form Parthia. Notably for an endgame tier 3 tag, it only requires controlling territories across two different provinces and does not provide any claims. However, forming Parthia does give the temporary Parthian Identity modifier with strong bonuses to Pop assimilation.png assimilation speed and Unintegrated culture group happiness unintegrated culture group happiness, making rapid expansion in the near future significantly easier. Forming Parthia will also switch the forming country's primary culture to Parthian, which will give it the same culture group as much of the rest of the Iranian plateau and make expansion into the rest of Persia much easier.


There is a single country-specific event relating to Parthia, which spawns Arsaces in the country and makes him the ruler. Note that despite the event being about Parthia, it is actually triggered after the formation of Flag of Dahae Dahae, allowing the country to use the bonuses and army that is spawned to pursue the conquest of Parthia.[1]



With the unification of the Dahae tribes great social changes are also upon us. Some men thrive in such conditions, rising from obscurity to relevance and power.
Arsaces is one such man. Having quickly built a power base for himself, with enthusiastic warriors joining his side by the hundreds, he has now approached the Clan Chiefs offering his assistance in bringing our federation towards a brighter future.

Trigger conditions Is triggered only by

the Unite the Dahae decision

Immediate effects
  • Create a new Dahae Heptadic character named Arsaces Arsacid with the Tactician tactician and Disciplined disciplined traits
  • Make Arsaces Arsacid the founder of a new major family and add several relatives and adopt a number of clients into the new family

Event button.png
The world will never be the same.
  • Make Arsaces Arsacid into the ruler
  • Arsaces Arsacid gains Wealth 900 gold
  • Get the modifier Rise of Arsaces for 25 years, giving:
    • Manpower.png +10% National Manpower
    • Levy.png +5% Levy Size Modifier

Formation requirements[edit]


Form Parthia

When the Parni tribe conquered the region of Parthia, liberating it from the grasp of the Seleukids, few could have known that this once-nomadic tribal nation would go on to conquer much of Central Asia.

Potential requirements
  • Has at least 1 territory
  • Country is in the Scythian culture group
  • Is not Flag of Parthia Parthia
  • Is not a Tier 3 formable
  • Either not AI-controlled, is Flag of Parnia Parnia or has more than 12 territories

  • Country becomes 20px Parthia (Formable)
  • Set the primary culture to Parthian, with the old primary culture becoming integrated
  • Set the capital to Nisaia (6657), and make it a city if it is currently a territory
  • Add Citizens 4 citizen pops and Freemen 4 freemen pops to the capital
  • If the capital has the modifier Emergent Center of Civilization, remove it
  • Capital gets the modifier Emergent Capital until the end of the game, giving:
    • Global population growth.png +0.15% Local Population Growth
    • Civilization.png +10% Local Civilization Level
    • Freeman happiness +8% Local Freeman Happiness
  • Get the modifier Parthian Identity for 15 years, giving:
    • Unintegrated culture group happiness +12% Unintegrated Culture Group Happiness
    • Integrated culture happiness +10% Integrated Culture Happiness
    • Civilization.png +0.10% Monthly Civilization Change
    • Local pop promotion speed.png +2 Pop Promotion Speed
    • Pop assimilation.png +2 Pop Assimilation Speed
  • If the government form is tribal, set the government type to Autocratic Monarchy
  • Get Province investment 3 free province investments
Formation requirements for Parthia. All fully coloured territories are required.


  1. These events can be found in /ImperatorRome/game/events/dhe/dhe_parthia.txt.