Books about Extraterrestrial beings -- Fiction (sorted by popularity)
- The Ethicators Willard Marsh 70 downloads
- The Useless Bugbreeders James Stamers 70 downloads
- Sweet Tooth Robert F. Young 69 downloads
- D-99: a science-fiction novel H. B. Fyfe 68 downloads
- The guest rites Robert Silverberg 68 downloads
- The Lonely Judith Merril 68 downloads
- License to Steal Louis Newman 68 downloads
- Alien Offer Al Sevcik 66 downloads
- To Save Earth Edward W. Ludwig 65 downloads
- Trajectory to Taurus Les Cole 65 downloads
- Green Grew the Lasses Ruth Laura Wainwright 65 downloads
- The Unwilling Professor Arthur Porges 64 downloads
- The Almost-Men Irving E. Cox 64 downloads
- Rabbits Have Long Ears Lawrence F. Willard 64 downloads
- Alien Minds E. Everett Evans 63 downloads
- The Seeder Max Williams 63 downloads
- Export Commodity Irving E. Cox 62 downloads
- The Gift Bearer Charles L. Fontenay 62 downloads
- Citizen Jell Michael Shaara 61 downloads
- The Course of Logic Lester Del Rey 61 downloads
- Quest's End Basil Wells 61 downloads
- Specimen Charles V. De Vet 59 downloads
- A City Near Centaurus William R. Doede 58 downloads
- Circus Alan Edward Nourse 58 downloads
- Short Snorter Charles Einstein 58 downloads