Books about Human-alien encounters -- Fiction (sorted by popularity)
- The Scapegoat Richard Maples 106 downloads
- Naudsonce H. Beam Piper 106 downloads
- Triplanetary E. E. Smith 103 downloads
- The prince of space Jack Williamson 101 downloads
- If You Was a Moklin Murray Leinster 101 downloads
- The Winds of Time James H. Schmitz 100 downloads
- The Venus Trap Evelyn E. Smith 98 downloads
- The World That Couldn't Be Clifford D. Simak 97 downloads
- Pen Pal Stephen Marlowe 95 downloads
- Colossus of Chaos Nelson S. Bond 95 downloads
- Weapon Jesse F. Bone 94 downloads
- Clean Break Roger D. Aycock 92 downloads
- The Vanishing Venusians Leigh Brackett 90 downloads
- The Repairman Harry Harrison 89 downloads
- Beyond Light Nelson S. Bond 88 downloads
- Mightiest Qorn Keith Laumer 88 downloads
- Lumen Camille Flammarion 88 downloads
- Student Body F. L. Wallace 87 downloads
- Biddy and the silver man Harlan Ellison 86 downloads
- The expendables A. E. Van Vogt 84 downloads
- Helpfully Yours Evelyn E. Smith 83 downloads
- Learning Theory James V. McConnell 83 downloads
- Escape Mechanism Charles E. Fritch 81 downloads
- Nobody saw the ship Murray Leinster 81 downloads
- And we sailed the mighty dark Frank Belknap Long 81 downloads