Books about Life on other planets -- Fiction (sorted by popularity)
- The War of the Worlds H. G. Wells 141 downloads
- The Gods of Mars Edgar Rice Burroughs 140 downloads
- Exploration Team Murray Leinster 128 downloads
- The Radio Planet Ralph Milne Farley 126 downloads
- Bleekman's Planet Randall Garrett and Robert Silverberg 124 downloads
- Eight Keys to Eden Mark Clifton 121 downloads
- Voodoo Planet Andre Norton 118 downloads
- Pariah Planet Murray Leinster 114 downloads
- An Earthman on Venus (Originally titled "The Radio Man") Ralph Milne Farley 114 downloads
- The Lunarian Professor and His Remarkable Revelations Concerning the Earth, the Moon and Mars James B. Alexander 114 downloads
- No-Risk Planet Stephen Marlowe 105 downloads
- Operation Interstellar George O. Smith 103 downloads
- Med Ship Man Murray Leinster 102 downloads
- Daughter Philip José Farmer 102 downloads
- World of the Mad Poul Anderson 102 downloads
- The Wind People Marion Zimmer Bradley 100 downloads
- Star Ship Poul Anderson 97 downloads
- Rebels of the Red Planet Charles L. Fontenay 96 downloads
- This World Is Taboo Murray Leinster 95 downloads
- The Frozen Planet Keith Laumer 93 downloads
- Aide Memoire Keith Laumer 90 downloads
- Survival factor Charles V. De Vet 90 downloads
- Space Blackout Sam Carson 87 downloads
- The Desert and the Stars Keith Laumer 85 downloads
- Spacerogue Robert Silverberg 83 downloads