Books about Human-alien encounters -- Fiction (sorted by popularity)
- Outpost on Io Leigh Brackett 97 downloads
- Beyond our control Randall Garrett 96 downloads
- The Fool David Mason 96 downloads
- Growing up on Big Muddy Charles V. De Vet 95 downloads
- A Transmutation of Muddles H. B. Fyfe 95 downloads
- Space-Can Murray Leinster 95 downloads
- The Martian Allen Glasser and A. R. Hilliard 95 downloads
- Retief of the Red-Tape Mountain Keith Laumer 95 downloads
- Sunfire! Edmond Hamilton 93 downloads
- End as a Hero Keith Laumer 93 downloads
- Planet of the Gods Robert Moore Williams 93 downloads
- Not Fit for Children Evelyn E. Smith 93 downloads
- Rough Beast Roger D. Aycock 93 downloads
- You Don't Walk Alone Frank M. Robinson 92 downloads
- Les Xipéhuz (French) aîné J.-H. Rosny and jeune J.-H. Rosny 92 downloads
- The Hero Elaine Wilber 92 downloads
- The overlord's thumb Robert Silverberg 91 downloads
- The Moon Maid Edgar Rice Burroughs 91 downloads
- The Crowded Colony Jerome Bixby 91 downloads
- The Last Monster Gardner F. Fox 91 downloads
- Hellflower George O. Smith 90 downloads
- The Good Seed Mack Reynolds 90 downloads
- Pogo Planet Donald A. Wollheim 90 downloads
- Strange Exodus Robert Abernathy 90 downloads
- Joe Carson's Weapon James R. Adams 90 downloads