Pachacuti is a campaign in Age of Empires II: Definitive Edition that replaces the El Dorado campaign from The Forgotten. It focuses on Pachacuti Inca Yupanqui (Quechua: Pachakutiq Inka Yupanki; 1418 – 1471 or 1472), the ninth Sapa Inca of the Kingdom of Cusco. During his reign Pachacuti turned Cusco from a small hamlet to a large kingdom which puts them around the same level with the Chimú, and later initiated an era of conquest that expanded the Cusco dominion to nearly the entire length of western South America within three generations, overtaking the Chimú in the process and leaving them as the sole great power on the region as the Inca Empire (Quechua: Tawantinsuyu), which lasts until they were conquered by Francisco Pizarro in 1532.
In-game, he has the appearance of a Kamayuk. Like other infantry, Pachacuti is affected by all upgrades that affect infantry as well as any other bonuses that affect them. As a hero, he cannot be converted and can regenerate health.
Countless tribes vie for supremacy in the steep mountain valleys and dense jungles of South America. But which will prevail and earn the favor of the gods? As treachery and discord gnaw at the young empire of the Inca, the destiny of an entire people lies in the hands of a single man.
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—In-game campaign description
The Pachacuti campaign consists of 5 scenarios. The player plays as the Incas.