Books about Extraterrestrial beings -- Fiction (sorted by popularity)
- Fifteen Hundred Miles an Hour Charles Dixon 121 downloads
- The green girl Jack Williamson 121 downloads
- The Star Mouse Fredric Brown 119 downloads
- Indirection Everett B. Cole 117 downloads
- The Green World Hal Clement 116 downloads
- Keep Your Shape Robert Sheckley 116 downloads
- Extracts from the Galactick Almanack: Music Around the Universe Laurence M. Janifer 113 downloads
- Peacemaker Alan Edward Nourse 112 downloads
- Green Grew the Lasses Ruth Laura Wainwright 112 downloads
- The Course of Logic Lester Del Rey 112 downloads
- Today is Forever Roger D. Aycock 110 downloads
- The Onslaught from Rigel Fletcher Pratt 107 downloads
- A trace of memory Keith Laumer 107 downloads
- Laboratory Jerome Bixby 105 downloads
- The Klygha H. B. Fyfe 101 downloads
- To Each His Own Jack Sharkey 101 downloads
- A Transmutation of Muddles H. B. Fyfe 100 downloads
- Planet of Creation Chester S. Geier 100 downloads
- The Invader Alfred Coppel 99 downloads
- Unwelcomed Visitor Joseph Samachson 97 downloads
- Common Denominator John D. MacDonald 97 downloads
- The Test Colony Winston K. Marks 97 downloads
- The Last Monster Gardner F. Fox 97 downloads
- Alien Offer Al Sevcik 95 downloads
- Savage Galahad Bryce Walton 95 downloads