Doomsday: My System Has Mutated

An ordinary social animal story, when he woke up, he accidentally found that he had traveled through time, and it was still the end of the world. Alien beasts from around the world are coming, the planet's creatures are mutating, and no one can survive. But he soon discovered that everyone in this world has a cold weapon system, and everyone can become stronger by fighting monsters and survive. Guan Wenwen originally thought that he would join the wave of killing monsters, but who would have thought that his system would mutate into a gun god system with thermal weapons. From now on, it is no longer a dream to blow off the enemy's head with a shot from 800 meters away. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.