Books about Human-alien encounters -- Fiction (sorted by popularity)
- The space visitors Edmond Hamilton 153 downloads
- The Native Soil Alan Edward Nourse 150 downloads
- Inside John Barth William W. Stuart 150 downloads
- Meeting of the Minds Robert Sheckley 146 downloads
- The Winds of Time James H. Schmitz 146 downloads
- Pictures Don't Lie Katherine MacLean 143 downloads
- Communication Charles L. Fontenay 139 downloads
- The Five Hells of Orion Frederik Pohl 138 downloads
- The ordeal of Lancelot Biggs Nelson S. Bond 136 downloads
- Les Xipéhuz (French) aîné J.-H. Rosny and jeune J.-H. Rosny 134 downloads
- When the atoms failed Jr. John W. Campbell 134 downloads
- The untouchable adolescents Harlan Ellison 133 downloads
- The expendables A. E. Van Vogt 132 downloads
- The World That Couldn't Be Clifford D. Simak 131 downloads
- Jackie sees a star Marion Zimmer Bradley 126 downloads
- Lumen Camille Flammarion 124 downloads
- Biddy and the silver man Harlan Ellison 123 downloads
- The high ones Poul Anderson 122 downloads
- Operation Terror Murray Leinster 122 downloads
- The Tree of Life C. L. Moore 121 downloads
- 30-day wonder Richard Wilson 121 downloads
- The hellflower George O. Smith 121 downloads
- Left hand, right hand James H. Schmitz 121 downloads
- "Shadrach" Nelson S. Bond 120 downloads
- The prince of space Jack Williamson 120 downloads