Kalran: Tales of the four nations/Factory

Due to their infertility, from to the fallout their ancestor suffered, the remaining humans relies mainly on droids to fight their battles. And one of the greatest breakthrough was the creation of the factory.

The factory is a mostly automated military facility, with minimal human staffs, which constructs all of the federations droids on site and ready for battle in packages. But, due to complex machinery and demanding ai, only one can built per headquarters. But the factory can be upgraded to produce three units at once.

Their vehicles also consist of a remote controlled driver aided by an ai.