Doomsday Era: My Shelter Level 999

"Ding! Your shelter is level 999!" "Ding! There are 10,000 new people in your shelter!" "Ding! Congratulations on killing the zombie general and getting the legendary special effects equipment! You can send out a small tornado when you attack!" The infected humans either turned into zombies or awakened terrifying abilities. Everyone who survived built a shelter! The strongest shelter in the world! The king-level zombie leader led a siege of five billion zombies for three days and three nights but failed to capture it! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.