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Torsion Engines is a technology in Age of Empires II HD: The African Kingdoms that is unique to the Ethiopians and can be researched at the Castle once the Imperial Age is reached. Once researched, it increases the blast radius of most Siege Workshop units. More specifically:


Torsion Engines is a very helpful upgrade that benefits almost all siege machines the player can build. The Mangonel and Scorpion lines gain the most out of Torsion Engines due to allowing both units to provide even more damage to massed units. As a result, they are some of the most formidable units of their type. Bombard Cannons and, to a lesser extent, Siege Rams, also appreciate Torsion Engines. The main drawback to this technology is its prohibitive cost, making it only viable in the late game.

Team bonuses[]

  • Portuguese AoE2 Portuguese: Researching Torsion Engines is 25% faster.


AoEIIDE icon Definitive Edition[]


A Torsion Siege Engine is a type of artillery that utilizes torsion to launch projectiles. They were initially developed by the ancient Greeks, specifically Philip II of Macedon and Alexander the Great, and used through the Middle Ages until the development of gunpowder artillery in the 14th century proved them obsolete, essentially all non-battering ram/siege tower siege units utilize torsion. It should also be noted that increasing the blast range is inaccurate, as torsions allowed their users to fire and reload faster.

The Kingdom of Kush (founded 1070 BC) improved military organization and logistics in Nubia. Siege warfare was vastly developed with the creation of siege engines by the 8th century BC, Siege Towers and Battering Rams were used during the siege of Hermopolis. Kush was succeeded by a number of Christian kingdoms after its collapse in the 4th century AD. The organization of the armies and navies of these kingdoms was largely based on that of their predecessor.


Unique technologies in Age of Empires II
AoE2-DLCicon-0 The Age of Kings civilizations
UniqueTechCastle-DEBritons AoE2 Yeomen · Byzantines AoE2 Greek Fire · Celts AoE2 Stronghold · Chinese AoE2 Great Wall · Franks AoE2 Bearded Axe · Goths AoE2 Anarchy · Japanese AoE2 Yasama · Mongols AoE2 Nomads · Persians AoE2 Kamandaran · Saracens AoE2 Bimaristan · Teutons AoE2 Ironclad · Turks AoE2 Sipahi · Vikings AoE2 Chieftains
UniqueTechImperialDEBritons AoE2 Warwolf · Byzantines AoE2 Logistica · Celts AoE2 Furor Celtica · Chinese AoE2 Rocketry · Franks AoE2 Chivalry · Goths AoE2 Perfusion · Japanese AoE2 Kataparuto · Mongols AoE2 Drill · Persians AoE2 Citadels · Saracens AoE2 Counterweights · Teutons AoE2 Crenellations · Turks AoE2 Artillery · Vikings AoE2 Bogsveigar
AoE2-DLCicon-1 The Conquerors civilizations
UniqueTechCastle-DEAztecs AoE2 Atlatl · Huns AoE2 Marauders · Koreans AoE2 Eupseong · Mayans AoE2 Hul'che Javelineers · Spanish AoE2 Inquisition
UniqueTechImperialDEAztecs AoE2 Garland Wars · Huns AoE2 Atheism · Koreans AoE2 Shinkichon · Mayans AoE2 El Dorado · Spanish AoE2 Supremacy
AoE2-DLCicon-2 The Forgotten civilizations
UniqueTechCastle-DEIncas AoE2 Andean Sling · Italians AoE2 Pavise · Magyars AoE2 Corvinian Army · Slavs AoE2 Detinets
UniqueTechImperialDEIncas AoE2 Fabric Shields · Italians AoE2 Silk Road · Magyars AoE2 Recurve Bow · Slavs AoE2 Druzhina
AoE2-DLCicon-3 The African Kingdoms civilizations
UniqueTechCastle-DEBerbers AoE2 Kasbah · Ethiopians AoE2 Tigui · Malians AoE2 Royal Heirs · Portuguese AoE2 Carrack
UniqueTechImperialDEBerbers AoE2 Maghrebi Camels · Ethiopians AoE2 Farimba · Malians AoE2 Torsion Engines · Portuguese AoE2 Arquebus
AoE2-DLCicon-4 Rise of the Rajas civilizations
UniqueTechCastle-DEBurmese AoE2 Manipur Cavalry · Khmer AoE2 Tusk Swords · Malay AoE2 Thalassocracy · Vietnamese AoE2 Chatras
UniqueTechImperialDEBurmese AoE2 Howdah · Khmer AoE2 Double Crossbow · Malay AoE2 Forced Levy · Vietnamese AoE2 Paper Money
AoE2-DLCicon-5 The Last Khans civilizations
UniqueTechCastle-DEBulgarians AoE2 Stirrups · Cumans AoE2 Steppe Husbandry · Lithuanians AoE2 Hill Forts · Tatars AoE2 Silk Armor
UniqueTechImperialDEBulgarians AoE2 Bagains · Cumans AoE2 Cuman Mercenaries · Lithuanians AoE2 Tower Shields · Tatars AoE2 Timurid Siegecraft
AoE2Icon-LordsWest Lords of the West civilizations
UniqueTechCastle-DEBurgundians AoE2 Burgundian Vineyards · Sicilians AoE2 First Crusade
UniqueTechImperialDEBurgundians AoE2 Flemish Revolution · Sicilians AoE2 Hauberk
Dawn of the Dukes icon Dawn of the Dukes civilizations
UniqueTechCastle-DEBohemians AoE2 Wagenburg Tactics · Poles AoE2 Szlachta Privileges
UniqueTechImperialDEBohemians AoE2 Hussite Reforms · Poles AoE2 Lechitic Legacy
AoE2Icon-DynastiesIndia Dynasties of India civilizations
UniqueTechCastle-DEBengalis AoE2 Paiks · Dravidians AoE2 Medical Corps · Gurjaras AoE2 Kshatriyas · Hindustanis AoE2 Grand Trunk Road
UniqueTechImperialDEBengalis AoE2 Mahayana · Dravidians AoE2 Wootz Steel · Gurjaras AoE2 Frontier Guards · Hindustanis AoE2 Shatagni
AoE2Icon-ReturnRome Return of Rome civilizations
UniqueTechCastle-DERomans AoE2 Ballistas
UniqueTechImperialDERomans AoE2 Comitatenses
AoE2Icon-MountainRoyals The Mountain Royals civilizations
UniqueTechCastle-DEArmenians AoE2 Cilician Fleet · Georgians AoE2 Svan Towers
UniqueTechImperialDEArmenians AoE2 Fereters · Georgians AoE2 Aznauri Cavalry
Removed technologies
UniqueTechCastle-DEPersians AoE2 Boiling Oil · Saracens AoE2 Camelry · Saracens AoE2 Madrasah · Mayans AoE2 Obsidian Arrows · Slavs AoE2 Orthodoxy · Koreans AoE2 Panokseon
UniqueTechImperialDEVikings AoE2 Berserkergang · Persians AoE2 Mahouts · Sicilians AoE2 Scutage · Saracens AoE2 Zealotry
Revised technologies
UniqueTechImperialDE Couriers · UniqueTechImperialDE Manipur Cavalry · UniqueTechImperialDE Paper Money · UniqueTechCastle-DE Royal Heirs