Books about Human-alien encounters -- Fiction (sorted by popularity)
- Venus Enslaved Manly Wade Wellman 65 downloads
- All That Earthly Remains C. C. MacApp 64 downloads
- A Transmutation of Muddles H. B. Fyfe 64 downloads
- The Blue Behemoth Leigh Brackett 64 downloads
- A time to die Harold Calin 64 downloads
- Quinquepedalian Piers Anthony 64 downloads
- Avoidance Situation James V. McConnell 64 downloads
- The Stranger Gordon R. Dickson 64 downloads
- The Sentimentalists Murray Leinster 64 downloads
- The Onslaught from Rigel Fletcher Pratt 64 downloads
- Battle for the Stars Edmond Hamilton 63 downloads
- Kid Stuff Winston K. Marks 63 downloads
- The Good Seed Mack Reynolds 63 downloads
- Farewell message David Mason 63 downloads
- Proxy Planeteers Edmond Hamilton 63 downloads
- When the atoms failed Jr. John W. Campbell 63 downloads
- Contamination Crew Alan Edward Nourse 62 downloads
- Boarding party Robert F. Young 62 downloads
- Cry from a Far Planet Tom Godwin 62 downloads
- The Planet That Time Forgot Donald A. Wollheim 62 downloads
- Big Baby Jack Sharkey 62 downloads
- The Contact Point Jack Sharkey 62 downloads
- Cargo to Callisto Jerome Bixby 62 downloads
- The Course of Logic Lester Del Rey 61 downloads
- Communication Charles L. Fontenay 61 downloads