He'd transmigrated, and arrived in a world that revered humans as its creators. As a human, Xia Mo should have been excited, but alas… humanity in this world was extinct; he was the only human left, and mechanical lifeforms were also lurking, ready to pounce. Danger! Faced with this perilous world, Xia Mo decided to enter a dungeon. The main world was extremely dangerous, so what did that have to do with his dungeon? Wait, why was the dungeon also in a state of apocalypse? Something wasn't right. In the dungeon, he encountered mechanical monsters, their speed and slow attacks as powerful as monsters, impossible to defeat despite his best efforts. But even so, Xia Mo still wanted to say: Hehe, I must survive! …This is a multiverse story, primarily set in a game world, but other worlds will also be included, as relying solely on game worlds has its limitations. The world-building and other aspects will be integrated into the story, not…

Di Xiu transmigrated, becoming a gray rat in another world. Not only must he build a protective dungeon to safeguard himself and his race, but he must also constantly guard against invasions from other races. Humans, gods, demons, monsters, dragons, elves, ancient taboos... even outworld gods coveting the world! The former order crumbles, and the apocalypse topples the towers of civilization. In the face of life and death, Di Xiu comprehends the truth of magic. Magic is not chanting, but a rigorous set of underlying world protocols! Only with the correct logical framework can it be safely compiled and run. While other mages are still struggling to chant spells with their flesh and blood, Di Xiu is already debugging magic circuits in the dungeon, developing the third-generation gray rat exoskeleton armor, heavy armored mechs, and aerospace carriers... The magical industrial age has begun! The gray rats are building a jungle of steel and gears. Mechanical rats wield precision...