Doomsday: My Shelter Infinite Upgrades

[Apocalyptic Crisis] + [System] + [Farming] + [Invincibility] + [Decisive Killing] + [Darkness] + [Lord]

Source energy descended, corroding the world. The once-thriving city was reduced to a ruin overrun by aberrations, and the order of civilization collapsed overnight.

Tech geek Lin An, in a life-or-death moment as a monster breached his door, accidentally activated the [God-level Shelter System]. From that moment on, his home became an infinitely upgradeable super-fortress!

While survivors battled swords in the wasteland over a piece of bread, Lin An's soilless cultivation farm was already filled with the fragrance of fruits and vegetables. As the Awakened battle group fought bloody battles amidst the tide of corpses, Lin An leisurely sipped a Coke, watching the symphony of death played by the automated turrets through the surveillance camera.

[Metal Security Door] → [Alloy Armored Wall] → [Electromagnetic Railgun]… [Spider Robot] → [Drone Swarm] → [Minion Legion]…

From a survival fortress capable of self-preservation, to a self-sufficient resource center, to a towering mobile fortress, and finally to a steel metropolis roaming the skies!

However, just when Lin An thought he had mastered the apocalypse, he was horrified to discover that the so-called apocalypse was nothing more than a higher-dimensional "gu-breeding" game, and that he and all the humans struggling for survival were merely "fish" being kept in captivity.

"My home, my rules!" This time, Lin An must not only protect his own tiny world, but also lead his mobile fortress to overturn this cruel chessboard against those arrogant "fishermen"!