Books about Human-alien encounters -- Fiction (sorted by popularity)
- The Anglers of Arz Roger D. Aycock 118 downloads
- Les Xipéhuz (French) aîné J.-H. Rosny and jeune J.-H. Rosny 118 downloads
- The Test Colony Winston K. Marks 118 downloads
- Attitude Hal Clement 118 downloads
- The hellflower George O. Smith 118 downloads
- The Blue Behemoth Leigh Brackett 118 downloads
- A time to die Harold Calin 117 downloads
- Common Denominator John D. MacDonald 117 downloads
- Homecoming Horde Robert Silverberg 117 downloads
- Child of the Sun Leigh Brackett 117 downloads
- Today is Forever Roger D. Aycock 117 downloads
- Laboratory Jerome Bixby 117 downloads
- The Third Little Green Man Damon Knight 117 downloads
- Corpus earthling Louis Charbonneau 117 downloads
- Peacemaker Alan Edward Nourse 116 downloads
- The Course of Logic Lester Del Rey 116 downloads
- The Snowbank Orbit Fritz Leiber 116 downloads
- The Last Laugh Bryce Walton 116 downloads
- The Lonely Ones Edward W. Ludwig 116 downloads
- Problem on Balak Roger D. Aycock 116 downloads
- No Sons Left to Die! Hal Annas 116 downloads
- Dumbwaiter James Stamers 115 downloads
- Cry from a Far Planet Tom Godwin 115 downloads
- Perfect Answer Jr. L. J. Stecher 115 downloads
- Not Snow Nor Rain Miriam Allen De Ford 115 downloads