Forge Worlds are specialized planets in the Warhammer 40,000 universe, primarily dedicated to the production of advanced technology and weaponry. These worlds are heavily industrialized, featuring vast factories and forges where skilled workers, known as Tech-Priests, create everything from simple tools to complex starships. The atmosphere is often polluted, and the landscape is dominated by massive machinery. The most famous Forge World is Mars, which serves as the heart of the Adeptus Mechanicus, the organization responsible for maintaining and developing technology in the Imperium of Man. These worlds play a crucial role in supplying the military and other factions with the equipment needed for warfare and exploration.