Gears of War Codexery

Jacinto

The final fortress of humanity, a plateau city standing defiant against the end of the world.

Jacinto is the last bastion of humanity on the planet Sera, a massive fortified city-state built atop a solid granite plateau to shield its citizens from the Lambent and the Locust Horde. Originally constructed as a COG city, it serves as the capital of the Coalition of Ordered Governments (COG) during the height of the Pendulum War and the subsequent Locust War. The city is defined by its sheer scale and verticality, featuring towering walls that separate the safe zones from the hostile wilderness below. As the primary stronghold for the human race, Jacinto houses the COG's military command, industrial centers, and a dense population of refugees who fled the devastation across the continent.

Quick Facts

Location
Sera (Humanity's Last Stand)
Affiliation
Coalition of Ordered Governments (COG)
Status
Sunk/Destroyed
Key feature
The Great Wall and Underground Tunnels
Primary threat
Lambent Corruption and Locust Horde

Lore & Background

Before the war, Jacinto was a major COG city and the capital, not a small mining settlement. The COG mobilized its entire industrial might to reinforce the city's natural defenses, constructing the legendary Great Wall and digging deep underground tunnels as part of the city's original fortress design. These subterranean networks were not originally for mining; Imulsion drills were added later for the Lightmass Process. The city became a symbol of human resilience, yet it was also a pressure cooker of fear and desperation.

Rather than fall to a final assault, Jacinto was deliberately sunk by the COG during Operation: Hollow Storm to destroy the Locust stronghold beneath it, forcing the evacuation of the population. The Great Wall was not overrun; the city was evacuated before being sunk, marking the darkest hour for the COG and forcing the remaining population to flee while the surface above burned with Lambent fire and the ruins of civilization crumbled.

Reader's Guide

Jacinto is a vertical metropolis carved into a mountain range, divided into distinct zones ranging from the elite Upper City to the industrial Lower Ward and the cramped Undercity tunnels. Strategically, the city's natural elevation provided a defensive advantage against ground assaults, while the Great Wall served as an impenetrable barrier for decades. However, this verticality also made evacuation difficult once the Locust breached the perimeter.

The primary environmental hazard is the Lambent corruption, which seeps through the bedrock and transforms anything it touches into crystalline monsters. The city's reliance on Imulsion drills created a volatile energy source that eventually contributed to its downfall when the tunnels were compromised. Key events include the initial fortification during the Pendulum War, the massive refugee influx as other cities fell, and the catastrophic final battle where the Locust Horde breached the walls, leading to the city's abandonment.

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