A long doomsday novel usually required a lot of plot and character creation, so it required sufficient story reserve and creative ability. The following are some classic doomsday novels with plots and words exceeding 4 million words: 1. The Lone Ship Doomsday series. The 25 novels in the series described the survival of humans on a lone ship after Earth's civilization was destroyed by alien intelligence. 2. Resident Evil series, Dworkin. There were a total of 20 novels in the series, which depicted a post-apocalyptic era where humans were in panic and crisis due to the attacks of viruses and monsters. 3. Dark Forest series. The series of 30 novels tells the story of humans exploring the universe for survival after the Earth was destroyed by alien intelligence. 4." Crossing Worlds " series. The 20 novels in the series depicted the survival of humans in the mythical world and the magical world during the end of the world. 5. The Grand Nirvana of Rebirth series. There were a total of 20 novels in this series, which described the survival process of humans in the Great Nirvana of the Otherworld after the Earth was destroyed by alien intelligence. These are some classic doomsday novels that are recommended. Their plots and words are over 4 million words. I hope they can meet your needs.