Billions of Zombies: the Doomsday Fortress

Yu Ge is a billionaire zombie game enthusiast. He got a ridiculous reward for helping a fairy disguised as an old woman to cross the road. He enters this game to help the last human beings to defend against the continuous attacks of zombies. If he succeeds, he can make a wish. If he fails, he will be wiped out. As a pig's foot with a fanatical doomsday plot, how can he let go of this opportunity? System, then start. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.