National Fate Tower Defense: The Whole Country Comes to Aid My Otherworldly Battlefield

[National Fate] + [7 Days to Die] + [Sky Islands] + [Card Draws] + [Tech Advancement] + [Genetic Ascension] + [Guns, Cannons, and Magic] In the spring of 2033, a group of enormous, ordinary-looking silver spheres suddenly drifted down from space and hovered above the cities. Then every country was divided along its borders, extracted and split into a series of floating islands. In each country, a sphere would randomly select one person to enter a battlefield in another world. They would use their knowledge, along with the resources and technology at their disposal, to defend the portals leading back to their country's sky island. Everyone got six and a half days to prepare before the great battle. On the night of the seventh day, monsters from the other world would arrive, swarming toward the portals to feast on the humans waiting beyond them. Those chosen from other countries were all retired soldiers, seasoned fighters, or at the very least martial arts movie stars. But the Golden Dragon Kingdom chose Yan Yue, an utterly ordinary art student and designer. Just as everyone began to mock the Golden Dragon Kingdom, Yan Yue used a super AI and high technology to restore everyone's hope in an instant. When the monsters come charging, as long as they're carbon-based life-forms, one burst from the 1130 Divine Sect will do the job!