My Doomsday Train

In the desolate wasteland, humanity's survivors must become "Train Captains" to endure. They gather resources to construct and perpetually enhance their personal armored trains, essential for traversing the dangerous landscape and escaping zombie hordes. The grim alternative to captaincy is enslavement, living under the control of others. Within this world, train components possess inherent maximum upgrade levels. However, Chen Mang's unique birthmark bestows upon him an unparalleled ability: to upgrade any component without any limitations. While fellow Captains disregard common-grade parts like "Carriage Blades" and "Drill Rams," Chen Mang elevates them to unprecedented levels. He soon discovers his resulting invincibility. Thus commences the unstoppable advance of a colossal, heavily fortified train stretching hundreds of carriages long through the doomsday wilderness. In this world, the dichotomy is stark: Train Captains and slaves.