Books about Human-alien encounters -- Fiction (sorted by popularity)
- Thunder in the void Henry Kuttner 71 downloads
- Planet of No-Return Wilbur S. Peacock 71 downloads
- The Moon Maid Edgar Rice Burroughs 71 downloads
- The Good Neighbors Edgar Pangborn 71 downloads
- Master Race Richard Ashby 71 downloads
- Rx Alan Edward Nourse 71 downloads
- The Cosmic Bluff Mack Reynolds 71 downloads
- Come into my parlor Charles E. Fritch 70 downloads
- The Little Pets of Arkkhan Bill Garson 70 downloads
- Heel Philip José Farmer 70 downloads
- The Vanisher Michael Shaara 70 downloads
- The overlord's thumb Robert Silverberg 70 downloads
- Today is Forever Roger D. Aycock 70 downloads
- Destination—Death Wilbur S. Peacock 70 downloads
- The Contact Point Jack Sharkey 69 downloads
- Joe Carson's Weapon James R. Adams 69 downloads
- The Plotters Richard S. Shaver 69 downloads
- The Thought-Men of Mercury R. R. Winterbotham 69 downloads
- A Planet for Your Thoughts James Norman 69 downloads
- Not Snow Nor Rain Miriam Allen De Ford 69 downloads
- The Unprotected Species Melvin Sturgis 69 downloads
- The Gravity Business James E. Gunn 69 downloads
- Slaughter on Dornell IV Randall Garrett and Robert Silverberg 69 downloads
- Sidewinders From Sirius Fox B. Holden 69 downloads
- Cosmic Saboteur Frank M. Robinson 69 downloads