Books about Human-alien encounters -- Fiction (sorted by popularity)
- The Vibration Wasps Frank Belknap Long 152 downloads
- Meeting of the Minds Robert Sheckley 149 downloads
- The Native Soil Alan Edward Nourse 148 downloads
- Inside John Barth William W. Stuart 148 downloads
- The untouchable adolescents Harlan Ellison 143 downloads
- The Five Hells of Orion Frederik Pohl 143 downloads
- Communication Charles L. Fontenay 143 downloads
- Pictures Don't Lie Katherine MacLean 143 downloads
- The Winds of Time James H. Schmitz 142 downloads
- When the atoms failed Jr. John W. Campbell 138 downloads
- The ordeal of Lancelot Biggs Nelson S. Bond 137 downloads
- Les Xipéhuz (French) aîné J.-H. Rosny and jeune J.-H. Rosny 134 downloads
- The expendables A. E. Van Vogt 133 downloads
- The World That Couldn't Be Clifford D. Simak 131 downloads
- Jackie sees a star Marion Zimmer Bradley 128 downloads
- 30-day wonder Richard Wilson 126 downloads
- The prince of space Jack Williamson 125 downloads
- "Shadrach" Nelson S. Bond 124 downloads
- Left hand, right hand James H. Schmitz 124 downloads
- The Tree of Life C. L. Moore 124 downloads
- Biddy and the silver man Harlan Ellison 123 downloads
- Lumen Camille Flammarion 123 downloads
- The high ones Poul Anderson 123 downloads
- No Sons Left to Die! Hal Annas 120 downloads
- Trajectory to Taurus Les Cole 119 downloads