Age of Empires Series Wiki
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Tech tree prev

The technology tree, more commonly known as tech tree, shows available units, buildings, and technologies for a certain civilization in Age of Empires, Age of Empires II, and Age of Empires IV. Each civilization has its own unique technology tree. Unless the square All Techs (unavailable for Age of Empires IV) is checked in the settings prior to the beginning of the game, only a limited number of units, buildings, and technologies are accessible for every civilization. However, doing so also eliminates civilization bonuses for every player.

Every game's technology tree can be found at its respective page:

In Age of Mythology, each civilization has a completely different technology tree.

Similarly, in Age of Empires III, each civilization's technology tree greatly differs by the region. They are currently divided into 5 parts (Africans, Asians, Europeans, Native Americans, and Federal Americans).

Gameplay elements in the Age of Empires series
Age · Ability (II · M · III · IV) · Architecture set (II · III) · Area of Effect (Trample damage) · Armor/Resists (hack/melee · pierce/ranged · crush/siege)  · Armor class/Tag (I - original · I - Return of Rome · II · IV) · Artificial intelligence · Attack (Attack bonus/Multiplier) · Attack delay · Attack ground · Aura (IV) · Auto Scout · Building (I · II · M · III · IV) · Civilization (I · II · M · III · IV) · Civilization bonus · Cheat code (I · II · M · III · IV) · Conversion · Counter · Diplomacy · Gaia/Mother Nature · Game modes · Garrison · Gather Point · Healing · Hit points · Hotkey · Line of Sight · Mini map · Player · Population · Range · Rate of Fire · Regeneration · Relic (II · M · IV) · Repairing · Resource (Renewable resources) · Scenario Editor (I · II · M · III · IV) · Score · Signal Allies/Flare · Soundtrack (I · II · M · III · IV) · Speed · Stealth mode · Taunt · Technology (I · II · M · III · IV) · Technology tree (I · II · IV) · Town Bell · Trade (IV) · Tribute · Unit (I · II · M · III · IV) · Unit formation · Unit stance (III) · Upgrade (I · II · III · IV) · User interface · Victory · Villager Priority
Genie Engine
Frame delay · Full Tech Tree · Team bonus
ReturnRome-AoEIcon Age of EmpiresRuins · Discovery
AoE2-DLCicon-0 Age of Empires IIPass-through damage · Projectile duplication
Bang Engine
Autoqueue · Snare
Aom original icon Age of MythologyGod (Major · Minor) · God power · Settlement
3Icon48px Age of Empires IIIAge-up methods (Politician/Tribal Council/Wonder/Federal State/Alliance· Banner army · Consulate · Damage Cap · Home City · Home City Card · Inspiring Flag · Minor civilization · Nuggets · Promotion · Revolution · Target Lock · Trade Monopoly · Trade Route · Treasure
Essence Engine
GameIcon-AoE4 Age of Empires IVBounty · Dynasty · Fire armor · Imperial Council (Vizier Point) · Influence · Landmark · Religion · Sacred Site · Variant civilization
If a gameplay element has different pages across games, like civilization, the individual pages are linked in brackets.
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