Books about Human-alien encounters -- Fiction (sorted by popularity)
- Birthright April Smith 72 downloads
- The Martians and the Coys Mack Reynolds 72 downloads
- The Vegans Were Curious Winston K. Marks 72 downloads
- Rough Beast Roger D. Aycock 71 downloads
- You Don't Walk Alone Frank M. Robinson 71 downloads
- Export Commodity Irving E. Cox 71 downloads
- Satisfaction Guaranteed Joy Leache 71 downloads
- Crisis! C. M. Kornbluth 71 downloads
- Not Fit for Children Evelyn E. Smith 71 downloads
- A Little Knowledge R. R. Winterbotham 71 downloads
- The invading asteroid Manly Wade Wellman 71 downloads
- The Invaders Murray Leinster 71 downloads
- Venus Enslaved Manly Wade Wellman 71 downloads
- The Pilot and the Bushman Sylvia Jacobs 70 downloads
- The Contact Point Jack Sharkey 70 downloads
- The Martian Allen Glasser and A. R. Hilliard 70 downloads
- What Inhabits Me? Robert Moore Williams 70 downloads
- Homecoming Horde Robert Silverberg 70 downloads
- The Sword Frank Quattrocchi 70 downloads
- Needler Randall Garrett 70 downloads
- Jupiter's Joke A. L. Haley 70 downloads
- War-Gods of the Void Henry Kuttner 69 downloads
- Star of Panadur Henry Hasse and Albert dePina 69 downloads
- The Huddlers William Campbell Gault 69 downloads
- Message From Mars Clifford D. Simak 69 downloads