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.
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.
