Books about Life on other planets -- Fiction (sorted by popularity)
- Paradise Planet Richard S. Shaver 42 downloads
- Rockabye, Grady David Mason 42 downloads
- Beauty interrupted Charles L. Fontenay 41 downloads
- Fairyland planet John Silletto 40 downloads
- Beware the Star Gods S. J. Byrne 40 downloads
- Revolt of the Outworlds Stephen Marlowe 40 downloads
- Critical difference Murray Leinster 40 downloads
- Exploration Team Murray Leinster 40 downloads
- Garden of Evil Margaret St. Clair 40 downloads
- Sword of Fire Robert Emmett McDowell 40 downloads
- Black Priestess of Varda Erik Fennel 39 downloads
- The Lord of Death and the Queen of Life Homer Eon Flint 39 downloads
- Marsin jumalat: Seikkailuromaani (Finnish) Edgar Rice Burroughs 38 downloads
- The Klygha H. B. Fyfe 38 downloads
- Planet of Dread Dwight V. Swain 38 downloads
- Distress Signal Ross Rocklynne 37 downloads
- The Masked World Jack Williamson 37 downloads
- As It Was Paul L. Payne 36 downloads
- The Flying Tuskers of K'niik-K'naak Jack Sharkey 36 downloads
- Citadel of the Green Death Robert Emmett McDowell 36 downloads
- Palos of the Dog Star Pack J. U. Giesy 36 downloads
- Always a Qurono Jim Harmon 35 downloads
- Világok harca : Mars-lakók a földön (Hungarian) H. G. Wells 35 downloads
- The Big Fix! Richard Wilson 35 downloads
- Valkyrie from the Void Basil Wells 34 downloads