Books about Human-alien encounters -- Fiction (sorted by popularity)
- The expendables A. E. Van Vogt 151 downloads
- If You Was a Moklin Murray Leinster 149 downloads
- A world to die for Sam Carson 146 downloads
- The Aab Edward W. Ludwig 145 downloads
- We're Civilized! Mark Clifton and Alex Apostolides 144 downloads
- The Repairman Harry Harrison 143 downloads
- Communication Charles L. Fontenay 143 downloads
- Student Body F. L. Wallace 142 downloads
- Pictures Don't Lie Katherine MacLean 139 downloads
- Triplanetary E. E. Smith 139 downloads
- Crisis! C. M. Kornbluth 135 downloads
- The World That Couldn't Be Clifford D. Simak 130 downloads
- A Bad Day for Vermin Keith Laumer 129 downloads
- The Winds of Time James H. Schmitz 128 downloads
- Weapon Jesse F. Bone 127 downloads
- Angel's Egg Edgar Pangborn 127 downloads
- Harwood's Vortex Robert Silverberg 125 downloads
- The sky was full of ships Theodore Sturgeon 123 downloads
- My Fair Planet Evelyn E. Smith 123 downloads
- The Weirdest World R. A. Lafferty 120 downloads
- The high ones Poul Anderson 120 downloads
- Referent Ray Bradbury 119 downloads
- Doorstep Keith Laumer 119 downloads
- The Snowbank Orbit Fritz Leiber 118 downloads
- The Onslaught from Rigel Fletcher Pratt 117 downloads