Skyscraper Apocalypse: Starting Naked, and I'm the Only Guy

The Great Flood is here! Huang Tang and all his female colleagues are transported into a world called the "Building Survival Game." To survive, they must keep building upwards! Fortunately, Huang Tang awakens the "Daily Gacha System," drawing god-tier cards every day.

He draws "Good Luck Comes": blind box openings with supreme luck!
He draws "Author's Note": a world where he sets the rules, declaring "Zombies can't bite!"
He draws "Retreat! Retreat! Retreat?": channeling the spirit of a formidable aunt, forcing everything to step back three paces!
He draws "Developer Mode": revealing the hidden rules of this world...

But what Huang Tang didn't expect is that all his female colleagues have awakened their own mysterious systems...!!!