Books about Extraterrestrial beings -- Fiction (sorted by popularity)
- Savage Galahad Bryce Walton 102 downloads
- D-99: a science-fiction novel H. B. Fyfe 98 downloads
- A Bad Day for Vermin Keith Laumer 98 downloads
- A Transmutation of Muddles H. B. Fyfe 96 downloads
- End as a Hero Keith Laumer 94 downloads
- Planet of the Gods Robert Moore Williams 93 downloads
- Not Fit for Children Evelyn E. Smith 93 downloads
- Growing up on Big Muddy Charles V. De Vet 93 downloads
- Indirection Everett B. Cole 92 downloads
- Second Landing F. L. Wallace 90 downloads
- Amateur in Chancery George O. Smith 90 downloads
- Out Around Rigel Robert H. Wilson 90 downloads
- Success Story Earl Goodale 90 downloads
- Extracts from the Galactick Almanack: Music Around the Universe Laurence M. Janifer 88 downloads
- The Last Monster Gardner F. Fox 87 downloads
- The Monster That Threatened the Universe R. R. Winterbotham 85 downloads
- Star-Crossed Lover William W. Stuart 85 downloads
- Daughter Philip José Farmer 85 downloads
- The Test Colony Winston K. Marks 85 downloads
- A trace of memory Keith Laumer 85 downloads
- On the Fourth Planet Jesse F. Bone 84 downloads
- Founding Father Jesse F. Bone 84 downloads
- Keep Your Shape Robert Sheckley 83 downloads
- Peacemaker Alan Edward Nourse 82 downloads
- The Invader Alfred Coppel 82 downloads