Doomsday: Obtain an Upgrade System at the Beginning

The planet Weilan is almost exactly the same as the Earth. The end of the world suddenly came to this land. Zombies were rampant and species mutated. All cities soon fell, and human civilization was destroyed overnight. Gao Yuan, who traveled from Blue Star, obtained the doomsday system. God-level equipment? Holy level equipment? Imperial equipment? All can be purchased. Powerful mercenaries have no summoning restrictions. As long as you have gold coins, you can summon unlimited troops and let your followers occupy every corner of the planet. And all this is just the beginning. Unimaginable powerful enemies appear one after another. The powerful enemies have the power to destroy the world. How should Gao Yuan deal with it? With a powerful doomsday system, can Gao Yuan carry forward the time-travel spirit of our Blue Star people, trample all enemies under his feet, and embrace countless beauties in his arms? Through the powerful power of the system, can Gao Yuan regain the land occupied by mutant species and re-establish the civilized society in his heart? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.