Books about Human-alien encounters -- Fiction (sorted by popularity)
- The mystery of Deneb IV Robert Silverberg 139 downloads
- The Repairman Harry Harrison 139 downloads
- 30-day wonder Richard Wilson 139 downloads
- What's He Doing in There? Fritz Leiber 139 downloads
- Retief of the Red-Tape Mountain Keith Laumer 139 downloads
- Hellflower George O. Smith 137 downloads
- Asteroid of the Damned Frederik Pohl and Dirk Wylie 137 downloads
- Honeymoon in bedlam Nelson S. Bond 136 downloads
- Doorstep Keith Laumer 136 downloads
- The Venus Trap Evelyn E. Smith 135 downloads
- Sunfire! Edmond Hamilton 135 downloads
- Boarding party Robert F. Young 135 downloads
- Angel's Egg Edgar Pangborn 134 downloads
- End as a Hero Keith Laumer 134 downloads
- Rough Beast Roger D. Aycock 134 downloads
- The Vanishing Venusians Leigh Brackett 134 downloads
- Battle for the Stars Edmond Hamilton 133 downloads
- A Bad Day for Vermin Keith Laumer 132 downloads
- Peril of the Blue World Robert Abernathy 132 downloads
- Prodigal Weapon Bill Garson 131 downloads
- A Zloor for Your Trouble! Mack Reynolds 131 downloads
- The Five Hells of Orion Frederik Pohl 130 downloads
- Left hand, right hand James H. Schmitz 130 downloads
- The thought-feeders R. R. Winterbotham 129 downloads
- Menace From Vega Randall Garrett and Robert Silverberg 129 downloads