Age of Empires II: Definitive Edition is identified here by its Steam app listing and release context. The gameplay passages describe technologies and unit upgrades in Age of Empires II. This reference collects named choices affecting villager carrying capacity, wood gathering, farm food, infantry and mounted units, ranged attacks, siege, Monk conversion, and military unit upgrades. Some records include research locations, costs, and times; others include only effects or civilization-specific access. The sources do not verify availability for every Definitive Edition mode or civilization. Records state the listed effects and explicit conditions, without ranking effectiveness or prescribing a build.
If you are comparing villager carrying and speed, wood gathering, or farm capacity, read these records for their distinct listed effects and research details.
The upgrade passage lists civilization-specific access and bonuses, including free upgrades and upgrades available at a different Age. A general table entry alone does not establish identical access for every civilization.
The upgrade passage says existing units are upgraded except converted units. It also says some free upgrades arrive with Age advancements and change statistics without changing unit cosmetics.
Siege Engineers excludes rams and Armored Elephants from its range increase, while Redemption covers all siege units but only most buildings. Those limits are part of the recorded effects.
Selected systems and editions described by the linked references.
Edition and mechanic limits
The gameplay passages describe Age of Empires II technologies and upgrades generally; they do not verify every record for all Definitive Edition modes, civilizations, or expansions.
Steam metadata establishes the target game and included expansion context; it does not establish gameplay effects.
No comparative effectiveness ranking, current meta verification, or upgrade optimizer is supported by these sources.
