Metroj

Metroj is a fictional metropolis featured in the *Metroid* video game series, developed by Nintendo and produced by Gunpei Yokoi. Introduced in *Metroid* (1986), the series presents Metroid as a mysterious, desolate planet with a complex history and advanced alien technology. The planet is depicted as a barren, industrial wasteland, characterized by its vast underground facilities, derelict spaceports, and expansive surface areas filled with toxic environments.

The planet’s name, "Metroid," is also the name of the series' central antagonist, a parasitic organism that infests and controls living hosts. The planet itself is often referred to as "Metroid Prime" in later games, particularly in the *Metroid Prime* trilogy, which explores its surface and underground structures in greater detail. These games present Metroid as a once-thriving world inhabited by the Chozo, an ancient alien civilization known for their advanced technology and architectural marvels.

Metroid’s environment plays a crucial role in the gameplay, offering players a mix of exploration, puzzle-solving, and combat. The planet’s layout typically includes interconnected tunnels, research facilities, and industrial zones, often filled with hazards such as radiation, gravity wells, and hostile creatures. The series emphasizes survival themes, with players navigating the planet’s dangers while uncovering its secrets.

The planet’s lore suggests that Metroid was once a thriving Chozo colony, but its civilization was destroyed by the Space Pirates, a rogue faction seeking the Metroid organism for its power. The planet’s ruins serve as a backdrop for the games' narratives, where the protagonist, Samus Aran, investigates the mysteries of Metroid while battling the Space Pirates and other threats. Over the years, the series has expanded its depiction of Metroid, incorporating new areas, factions, and story elements while maintaining its signature atmosphere of isolation and discovery.