This CK3 Rome guide gives a simple route for restoring the Roman Empire in Crusader Kings III. The goal is clear: pick a strong base, control the required duchies, secure succession, then press the decision when your realm can survive it.
Key points
- The Restore the Roman Empire decision requires full control of fifteen duchies around Italy, the Balkans, the Levant, North Africa and Egypt.
- The main routes go through the Byzantine Empire, the Holy Roman Empire or the Empire of Italia after Unify Italy.
- The ruler must be adult, capable, not imprisoned, independent and reach the Living Legend fame level.
- Update 1.13.2 enabled Roman restoration for administrative governments.
This tutorial mainly targets recent PC campaigns. It uses the current rules for feudal, clan and administrative governments. On jeu.video, you can also follow the latest news, our articles and the news category.
CK3 Rome Guide: Key Objectives
- Recommended route: Byzantium, especially if you want a clear plan.
- First target: secure Greece, the Balkans, southern Italy, Rome and Venice.
- Key condition: reach the Living Legend fame level.
- Common trap: owning a duchy title without fully controlling its land.
- Before pressing: keep an adult heir, calm vassals and a gold reserve.
CK3 Rome Guide: Pick the Best Route
Your first decision is political. To restore Rome, start from an accepted major title. The main paths are the Byzantine Empire, the Holy Roman Empire, or the Empire of Italia after the Unify Italy decision.
The Byzantine route is the most direct. You are close to Greece, Thrace, Anatolia and the Levant. In 1066, it gives a strong start, but vassals can become dangerous.
The Holy Roman Empire route also works. It takes more patience because elections and factions slow expansion. The Italian route is more technical, but it gives fast access to Rome, Sicily and a strong economy.
| Route | Strength | Risk | Advice |
|---|---|---|---|
| Byzantium | Near the Greek and eastern duchies | Powerful vassals | Stabilize the empire before Italy |
| Holy Roman Empire | Strong central European resources | Elections and factions | Secure Italy early |
| Italia | Fast access to Rome and Sicily | Longer eastern expansion | Build the economy before major wars |
Prepare Your Ruler Before Rome
Do not begin restoration with a weak ruler. You need prestige, reliable armies and vassals under control. One bad death can delay the campaign for decades.
Choose your lifestyle based on your weakness. Martial helps you win wars. Diplomacy calms vassals and improves alliances. Stewardship pays for buildings and mercenaries.
Before each major war, check this list:
- Your main heir is adult or almost adult.
- Your powerful vassals are on the council or satisfied.
- Your gold reserve can pay for at least one mercenary company.
- Your men-at-arms are reinforced and coherent.
- Your ruler is independent, adult, capable and free.
- Your fame is moving toward Living Legend.
CK3 Rome Guide: Conquer the Required Duchies
The classic mistake is rushing Alexandria or Antioch too early. Those areas are required, but they are far away and expensive to defend. Start with the Italian and Balkan core.
The duchies to fully control are Latium, Venice, Romagna, Sicily, Genoa, Capua, Apulia, Thrace, Antioch, Palestine, Alexandria, Athens, Tunis, Croatia and Thessalonika. The key word is fully. One hostile barony can block the decision.
Follow this simple order: Greece and the Balkans, southern Italy, Rome and Venice, North Africa, the Levant, then Egypt. Adapt if a neighbor collapses. Still keep a reserve near your capital.
Run Wars Without Draining the Empire
Restoring Rome is not one conquest. It is a series of spaced wars. Watch truces, factions and troop recovery.
During war, target capitals and war goals first. Large battles can help, but they are costly. A poorly supplied landing in Tunis or Egypt can destroy a stronger army.
Always keep a reaction army near your capital. If a faction is close to ultimatum, slow down. A white peace is better than a civil war at the worst time.
Check Religion, Culture and Government
The accepted routes should not be mixed at random. With Byzantium or the Holy Roman Empire, reread the faith and culture criteria in the tooltip. With the Empire of Italia, you notably need Unify Italy and Latin heritage.
Do not change faith or culture just before the decision. Read the requirements first. Conversion can unlock the decision, but it can also create religious factions.
Administrative government matters since the 1.13.2 update notes. That version enabled restoring Rome while administrative. This is useful with Byzantium and Roads to Power.
Build the Economy That Pays for Rome
The campaign costs time, soldiers and a lot of gold. Italian duchies are valuable because they fund the rest. Keep rich counties in your personal domain.
Your target is simple: positive income, a mercenary reserve and economic buildings. If you play Byzantium, protect Constantinople. If you play Italy, Rome, Naples, Sicily and northern Italy become your engines.
Mistakes to Avoid in This CK3 Rome Guide
Most blocks come from one forgotten detail. You own the duchy title, but not every holding. Italy is controlled, but Unify Italy was never taken. Or your old ruler dies before Living Legend.
Before assuming a bug, open the decision. Read every red line. Save the game, then inspect the required duchies one by one.
- Do not give Rome, Venice or Alexandria to an unstable vassal.
- Do not let your ruler grow old without an adult heir.
- Do not launch a distant war during a faction crisis.
- Do not change culture without checking the Italian route.
- Do not spend all prestige before Living Legend.
Press the Restore the Roman Empire Decision
When every line is green, do not press automatically. End wars. Repay debt. Marry the heir. Gift dangerous vassals.
Make a manual save if you are not playing Ironman. In Ironman, at least reread the effects. Patch notes fixed several men-at-arms cases, but you should still inspect your army after restoration.
Use this final procedure:
- Open the Restore the Roman Empire decision.
- Check the fifteen required duchies one by one.
- Confirm your character is independent, adult, capable, free and a Living Legend.
- Make sure your title, faith and culture route matches the tooltip.
- Stabilize internal factions before pressing the decision.
- Afterward, inspect your vassals, capital and men-at-arms.
Key Takeaways Before Restarting
Rome returns through consolidation, not random conquest. A good plan starts with a rich base. It continues with stable succession, fully controlled duchies and enough prestige to endure.
For official information, see the Paradox overview and the Steam listing.
