Books about Extraterrestrial beings -- Fiction (sorted by popularity)
- End as a Hero Keith Laumer 115 downloads
- Boarding party Robert F. Young 112 downloads
- The green girl Jack Williamson 112 downloads
- Meeting of the Minds Robert Sheckley 111 downloads
- Common Denominator John D. MacDonald 110 downloads
- Ten From Infinity Paul W. Fairman 109 downloads
- One Against the Moon Donald A. Wollheim 109 downloads
- Keep Your Shape Robert Sheckley 107 downloads
- D-99: a science-fiction novel H. B. Fyfe 105 downloads
- Not Fit for Children Evelyn E. Smith 104 downloads
- Rough Beast Roger D. Aycock 102 downloads
- Amateur in Chancery George O. Smith 100 downloads
- The Next Time We Die Robert Moore Williams 100 downloads
- Savage Galahad Bryce Walton 100 downloads
- Founding Father Jesse F. Bone 99 downloads
- Alien Minds E. Everett Evans 99 downloads
- Laboratory Jerome Bixby 98 downloads
- The Klygha H. B. Fyfe 97 downloads
- Second Landing F. L. Wallace 95 downloads
- The guest rites Robert Silverberg 94 downloads
- The Invader Alfred Coppel 93 downloads
- Birds of a Feather Robert Silverberg 92 downloads
- Exploiter's End James Causey 92 downloads
- Indirection Everett B. Cole 92 downloads
- On the Fourth Planet Jesse F. Bone 92 downloads