Books about Human-alien encounters -- Fiction (sorted by popularity)
- The Onslaught from Rigel Fletcher Pratt 134 downloads
- Angel's Egg Edgar Pangborn 130 downloads
- The Winds of Time James H. Schmitz 126 downloads
- Lumen Camille Flammarion 126 downloads
- Der rote Stern: Ein utopischer Roman (German) A. Bogdanov 124 downloads
- Collector's Item Evelyn E. Smith 124 downloads
- Accidental Death Peter Baily 124 downloads
- Battle for the Stars Edmond Hamilton 122 downloads
- Naudsonce H. Beam Piper 122 downloads
- Student Body F. L. Wallace 122 downloads
- Referent Ray Bradbury 121 downloads
- Proxy Planeteers Edmond Hamilton 121 downloads
- The Vilbar Party Evelyn E. Smith 120 downloads
- The Aab Edward W. Ludwig 120 downloads
- We're Civilized! Mark Clifton and Alex Apostolides 120 downloads
- Sunfire! Edmond Hamilton 119 downloads
- The World That Couldn't Be Clifford D. Simak 119 downloads
- The sky was full of ships Theodore Sturgeon 118 downloads
- The Ignoble Savages Evelyn E. Smith 118 downloads
- A Gift from Earth Manly Banister 118 downloads
- Weapon Jesse F. Bone 117 downloads
- The expendables A. E. Van Vogt 115 downloads
- The Avenger Damon Knight 114 downloads
- The thought-feeders R. R. Winterbotham 114 downloads
- The Lunarian Professor and His Remarkable Revelations Concerning the Earth, the Moon and Mars James B. Alexander 114 downloads