Books about Human-alien encounters -- Fiction (sorted by popularity)
- The overlord's thumb Robert Silverberg 108 downloads
- Nobody saw the ship Murray Leinster 107 downloads
- The Vilbar Party Evelyn E. Smith 106 downloads
- The Anglers of Arz Roger D. Aycock 106 downloads
- Lord of a Thousand Suns Poul Anderson 105 downloads
- The Venus Trap Evelyn E. Smith 104 downloads
- The Avenger Damon Knight 104 downloads
- Rough Beast Roger D. Aycock 104 downloads
- The Martian Allen Glasser and A. R. Hilliard 104 downloads
- Pen Pal Stephen Marlowe 103 downloads
- Proxy Planeteers Edmond Hamilton 101 downloads
- The Crowded Colony Jerome Bixby 101 downloads
- Aide Memoire Keith Laumer 101 downloads
- Reign of the telepuppets Daniel F. Galouye 100 downloads
- Common Denominator John D. MacDonald 100 downloads
- Beyond our control Randall Garrett 100 downloads
- Menace From Vega Randall Garrett and Robert Silverberg 100 downloads
- Tiger by the Tail Poul Anderson 100 downloads
- Men Without a World Joseph Farrell 99 downloads
- Diplomatic Immunity Robert Sheckley 99 downloads
- Accidental Death Peter Baily 99 downloads
- Outpost on Io Leigh Brackett 98 downloads
- The Vanishing Venusians Leigh Brackett 97 downloads
- The Flame Breathers Ray Cummings 97 downloads
- Sunfire! Edmond Hamilton 97 downloads