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Ōtsu, 672 CE

Prince Ōama, your elder brother, Emperor Tenji, has passed from this world. Though he was a great man, his final act was a grave mistake: he named a son of a lowborn wife as Emperor. This will ruin the authority and legitimacy of the Emperor as a descendant of gods on both family lines. What will the Chinese Emperor think of Japan now that it is ruled by a man of low birth? You have no choice, Prince Ōama. You must depose your nephew and take the Chrysanthemum Throne of Japan.
—In-game campaign description

Jinshin War is the seventh scenario of the Yamato, Empire of the Rising Sun campaign in Age of Empires: Definitive Edition, replacing A Friend in Need.

Scenario instructions[]

Starting conditions[]


  • Destroy Emperor Kobun's Government Center.
  • Protect Asuka Government Center.


  1. The Emperor gathers resources away from his main base, making the economy vulnerable to raids.
  2. Your allies at Asuka are under attack. Protect their villagers and buildings so that, in time, they will raise troops for their own defense.



  • Player (Yamato): The player starts a walled settlement with some Cavalry units and Villagers in the Iron Age, at the west of map.


  • Emperor Kobun (Choson): The Emperor starts with a walled settlement in the north, along with a Town Center and some economical buildings outside. It starts raiding Asuka with some Stone Throwers and Horse Archers.


  • Asuka (Choson): The city of Asuka is a walled settlement, with towers and some Broad Swordsmen guarding it, along a Town Center, Villagers and the Government Center that the player have to protect.


Assign at least one Cavalry to guard the gold mine next to the town, and send the rest to assist the Asuka in the defense of theirs. Generate plenty of Villagers to build up the Yamato economy, especially for gold and food. Train about a dozen Cavalry and a couple of Stone Throwers. Send them east from your town towards Emperor Kobun's Town Center, and take it out. Assign some Villagers to gather the remaining gold here, and when it depletes, assign them to gather the gold at the map's center next. Building another Siege Workshop, Stable, and Temple near Emperor Kobun will provide convenient reinforcements, and a handful of Priests (one for conversion, others to heal him) should prove useful for countering his annoying mounted archers. Generate some Stone Throwers and take out a Guard Tower or two nearby. After that, destroy a section of the wall, and send the Stone Throwers and perhaps some Cavalry to the enemy Government Center.


After strengthening Imperial power, the Emperor Tenji resolved to designate an heir as he approached old age. His eldest son, Prince Ōtomo, was talented enough to succeed him, but the Emperor had sired him with a lowborn wife. This parentage and the lowly status of his maternal family would make Prince Ōtomo an unlikely heir to his father, as his political support was limited. Nevertheless, the Emperor decided that his son would succeed him and named him heir.

The Emperor did have a younger brother, Prince Ōama, who had the backing of some members of the Imperial court. The youngest son of Emperor Jomei and Empress Kōgyoku, Ōama's ancestry fulfilled expectations for an Emperor. In fact, until he decided on his son succeeding him, the Emperor Tenji had designated Ōama as crown prince.

In 670 CE, the Emperor fell ill and, fearing that Ōama would attempt to seize power, had his brother brought to him. The Emperor asked Ōama if he wished to succeed the throne. The prince stated he did not wish to become Emperor but would retire to a temple and become a monk. The Emperor was satisfied with this answer and Ōama retired to a temple.

In 672 CE, Emperor Tenji died and his son Ōtomo ascended the throne as Emperor Kōbun, Prince Ōama, despite his claim to his brother, had no intentions of giving up the chance to become Emperor and secretly raised an army. He then marched on the Emperor at his palace in Ōtsu. In the conflict, known as the Jinshin War, Ōama defeated his nephew, who committed seppuku (ritual suicide), and ascended the throne as Emperor Tenmu.


You have saved Imperial legitimacy by ascending the throne as Emperor Tenmu. You will continue the reforms of your uncle and brother, strengthening both Japan and the Imperial powers. To achieve these goals, you have found a ready ally in the very clan that assisted your brother in defeating the Soga years ago: the Nakatomi, now bearing the honorific clan name Fujiwara. Surely, they will be loyal friends of the Emperor for generations.


Your nephew is most forgiving of your treachery. He has even given you a position in his court. Report to him to begin your duties as Court Eunuch.


In comparison, of the original scenario, the map have been enlarged, and has more resources. Apart from cosmetic changes, the players' positions have been swapped from the human player to the yellow one.

The historical background was changed from a revolt of Kyushu against the player and their Hyuga allies of the standard edition, and from the Scilla invasion against the Paekche from the version that featured the Yamato invasion of Korea, to the Jinshin Wars.


  • Asuka is the name of a region, a city (where during some time the palace and capital of the Yamato was located), and a period, between the Kofun and Nara era.
  • The AI players still being the Choson is a possible leftover of the original scenario depicting the Korean peninsula Yamato invasion. It is the only map in the Definitive Edition where there are Choson players.
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Campaigns in Age of Empires
EmpiresIcon.png Age of Empires
Ascent of Egypt Learning Campaign
(Tutorial Campaign: Ascent of Egypt)
Hunting · Foraging  · Discoveries · Dawn of a New Age (Advancing to the next Age) · Skirmish  · Farming  · Trade · Crusade (Religion) · River Outpost (The River Outpost) · Naval Battle · A Wonder of the World · Siege in Canaan (The Siege in Canaan)
Glory of GreeceLand Grab (Claiming Territory) · Citadel (Acropolis) · Ionian Expansion (The Conquest of Crete) · Trojan War (The Trojan War) · I'll Be Back (Colonization of Ionia) · Siege of Athens (The Siege of Athens) · Xenophon's March · Wonder (Alexander the Great)
Voices of BabylonHoly Man (The Holy Man) · Tigris Valley (The Tigris Valley) · Lost (Vengeance) · I Shall Return · The Great Hunt (Definitive Edition) · The Caravan · Lord of the Euphrates · Nineveh (The Conquest of Nineveh)
Yamato, Empire of the Rising SunThe Assassins (Definitive Edition) · Island Hopping · Capture (Definitive Edition) · Mountain Temple (The Mountain Temple) · The Canyon of Death · Oppression (Coup) · A Friend in Need (Jinshin War) · Kyushu Revolts (Fujiwara Revolts)
RomeIcon.png The Rise of Rome
The Rise of RomeBirth of Rome (The Birth of Rome) · Pyrrhus of Epirus · Syracuse (The Siege of Syracuse) · Metaurus (The Battle of the Metaurus) · Zama (The Battle of Zama) · Mithridates
Ave CaesarCaesar vs Pirates (Caesar's Revenge) · Britain (The Invasion of Britain) · Alesia (The Siege of Alesia) · Caesar vs Pompey (The Battle of Pharsalus)
Pax Romana (Imperium Romanum)Actium (The Battle of Actium) · Year of the Four Emperors (The Year of the Four Emperors) · Ctesiphon (Ransom at Ctesiphon) · Queen Zenobia (Zenobia, Queen of Palmyra) · Coming of the Huns (The Coming of the Huns)
Enemies of RomeCrossing the Alps · Third Greek War (Third Macedonian War) · Spartacus (The Revolt of Spartacus) · Odenathus vs Persians (Odaenathus, Lord of Palmyra)
Definitive Edition
Reign of the HittitesHomelands (demo only) · Growing Pains (demo only) · Opening Moves · Fall of the Mitanni (Raid on Babylon) · Battle of Kadesh (The Battle of Kadesh)
The First Punic WarStruggle for Sicily (The Battle of Agrigentum) · Battle of Mylae (The Battle of Mylae) · Battle of Tunis (The Battle of Tunis)
Bronze Age Art of War
Demo versions
Dawn of Civilization (beta)Dawn of a New Age  · Skirmish · Crusade · The Wreck of the Hyskos  · Last Stand
Names in brackets represent campaigns and scenarios renamed and/or reworked in the Definitive Edition.