Books about Life on other planets -- Fiction (sorted by popularity)
- Voodoo Planet Andre Norton 166 downloads
- Med Ship Man Murray Leinster 161 downloads
- The Radio Planet Ralph Milne Farley 160 downloads
- Bleekman's Planet Randall Garrett and Robert Silverberg 156 downloads
- This World Is Taboo Murray Leinster 135 downloads
- No-Risk Planet Stephen Marlowe 134 downloads
- An Earthman on Venus (Originally titled "The Radio Man") Ralph Milne Farley 134 downloads
- Exploration Team Murray Leinster 132 downloads
- The Planet Savers Marion Zimmer Bradley 130 downloads
- Spacerogue Robert Silverberg 129 downloads
- The Gods of Mars Edgar Rice Burroughs 127 downloads
- World of the Mad Poul Anderson 127 downloads
- Pariah Planet Murray Leinster 122 downloads
- Star Ship Poul Anderson 120 downloads
- Between the dark and the daylight Algis Budrys 119 downloads
- The missionary Jesse F. Bone 118 downloads
- The Frozen Planet Keith Laumer 118 downloads
- The Lunarian Professor and His Remarkable Revelations Concerning the Earth, the Moon and Mars James B. Alexander 118 downloads
- The overlord's thumb Robert Silverberg 116 downloads
- The Governor of Glave Keith Laumer 113 downloads
- The last days of the captain Kate Wilhelm 113 downloads
- The last space ship Murray Leinster 112 downloads
- Daughter Philip José Farmer 111 downloads
- The Wind People Marion Zimmer Bradley 111 downloads
- Slave Planet Laurence M. Janifer 111 downloads