The City (都市, Toshi) is a vast cybernetic labyrinth that began its construction on Earth. It is the overall setting of the Blame! universe.
Structure[]
The City is an object similar to a Dyson Sphere, with a scale dominating the solar system (Log 57). Its layout is layered like an onion. Gravity is provided and managed mostly through artificial means that do not require planetary mass or centrifugal force.
The Megastructure provides the overall structure, and separates the layers. It also hosts the computational hardware of the Netsphere.
At the time of Blame!, construction of the City is random and unplanned, with the Builders constantly creating passages, buildings, and all kinds of structures, only to take them apart and rebuild. At one point, an entire Megastructure Level was built off the grid, not integrated into the Netsphere.