PurposeThe wall was built to act as a base for the dome and as a defensive measure against attacks. In addition, the wall's height means that it takes the brunt of the force from storms and other natural phenomenon, sparing the dome base from stress. In the last 50 years, several huge 40 mm autocannons and laser cannons have been installed on the wall to protect against potential mutant attacks. Two enormous mechanised gates are built into the wall's superstructure on the eastern and western sides of the city. These two gates form the only official way in or out of the city both for land vehicles and hovercraft. Security is tight at these locations and transports heading into the city are scanned for illegal materials and people. The FCA don't want any cockroaches or mutants sneaking their way into the city.
Fusion City is the world's only surviving megacity. A colossal, domed city built in three levels, housing over a hundred million people.