Books about Life on other planets -- Fiction (sorted by popularity)
- The War of the Worlds H. G. Wells 180 downloads
- Temptress of Planet Delight Betsy Curtis 147 downloads
- The untouchable adolescents Harlan Ellison 146 downloads
- The Gods of Mars Edgar Rice Burroughs 139 downloads
- Citadel of Lost Ships Leigh Brackett 139 downloads
- An Earthman on Venus (Originally titled "The Radio Man") Ralph Milne Farley 134 downloads
- Gambler's World Keith Laumer 133 downloads
- Phantom Out of Time Nelson S. Bond 132 downloads
- The Planet Savers Marion Zimmer Bradley 129 downloads
- Way of the gods Henry Kuttner 129 downloads
- Retief of the Red-Tape Mountain Keith Laumer 123 downloads
- The Virgin of Valkarion Poul Anderson 122 downloads
- Star Ship Poul Anderson 117 downloads
- Pariah Planet Murray Leinster 116 downloads
- Narakan Rifles, About Face! George H. Smith 115 downloads
- World of the Mad Poul Anderson 114 downloads
- Cultural Exchange Keith Laumer 113 downloads
- Arcturus Times Three Jack Sharkey 111 downloads
- The price of eggs Randall Garrett 111 downloads
- The Madman From Earth Keith Laumer 107 downloads
- Amour, Amour, Dear Planet! Mark Clutter 105 downloads
- Tiger by the Tail Poul Anderson 105 downloads
- Slave Planet Laurence M. Janifer 104 downloads
- This World Is Taboo Murray Leinster 103 downloads
- Aide Memoire Keith Laumer 102 downloads