Books about Extraterrestrial beings -- Fiction (sorted by popularity)
- Exploiter's End James Causey 81 downloads
- Peacemaker Alan Edward Nourse 80 downloads
- Common Denominator John D. MacDonald 79 downloads
- The Serpent River Don Wilcox 79 downloads
- The Klygha H. B. Fyfe 78 downloads
- A City Near Centaurus William R. Doede 78 downloads
- The Invader Alfred Coppel 78 downloads
- Citizen Jell Michael Shaara 78 downloads
- One Against the Moon Donald A. Wollheim 78 downloads
- Export Commodity Irving E. Cox 77 downloads
- The Link Alan Edward Nourse 77 downloads
- License to Steal Louis Newman 76 downloads
- Break a Leg Jim Harmon 76 downloads
- Short Snorter Charles Einstein 75 downloads
- Special Delivery Kris Neville 75 downloads
- Circus Alan Edward Nourse 75 downloads
- Rough Beast Roger D. Aycock 74 downloads
- Today is Forever Roger D. Aycock 74 downloads
- Fifteen Hundred Miles an Hour Charles Dixon 74 downloads
- Sweet Tooth Robert F. Young 73 downloads
- The Course of Logic Lester Del Rey 71 downloads
- Star of Rebirth Bernard Wall 70 downloads
- Green Grew the Lasses Ruth Laura Wainwright 70 downloads
- Hold Onto Your Body! Richard O. Lewis 68 downloads
- The Measure of a Man Randall Garrett 68 downloads