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Science fiction (345)
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- The Host by Stephenie Meyer
- Contact by Carl Sagan
- Alien by Alan Dean Foster
- Communion: A True Story by Whitley Strieber
- Sphere by Michael Crichton
- The War of the Worlds by H. G. Wells
- Dreamcatcher by Stephen King
- Ender's Game by Orson Scott Card
- My Teacher Is an Alien by Bruce Coville
- Stranger in a Strange Land by Robert A. Heinlein
- Genocide by David Bischoff
- Xenogenesis, or Lilith's Brood by Octavia E. Butler
- The Taking by Dean Koontz
- Dawn by Octavia E. Butler
- The Andromeda Strain by Michael Crichton
- Alien Taste by Wen Spencer
- Speaker for the Dead by Orson Scott Card
- Alien: Resurrection - The Novelization by Joss Whedon
- Aliens Book 1: Earth Hive by Steve Perry
- Chariots of the Gods by Erich von Däniken
- The Visitor by K. A. Applegate
- 2001: A Space Odyssey by Arthur C. Clarke
- Aliens: A Novelization by Alan Dean Foster
- Camouflage by Joe Haldeman
- Rendezvous with Rama by Arthur C. Clarke
- Stranger in a Strange Land: The Original Uncut by Robert A. Heinlein
- The Man Who Fell to Earth by Walter Tevis
- Awaken Me Darkly by Gena Showalter
- Childhood's End by Arthur C. Clarke
- Imago (Book Three of the Xenogenesis Series) by Octavia E. Butler
- Freedom's Landing by Anne McCaffrey
- Xenocide by Orson Scott Card
- Aliens Book 2 : Nightmare Asylum by Steve Perry
- The Tommyknockers by Stephen King
- Baloney (Henry P.) by Jon Scieszka
- Starship Troopers by Robert A. Heinlein
- Barlowe's Guide to Extraterrestrials: Great Aliens from… by Wayne Douglas Barlowe
- Ender's Shadow by Orson Scott Card
- Alien Agenda: Investigating the Extraterrestrial Presence… by Jim Marrs
- The Hitchhiker's Guide to the Galaxy: A Trilogy in Five… by Douglas Adams
- Chocky (Puffin Books) by John Wyndham
- Aliens Book 3: The Female War by Steve Perry
- Cuckoo's Egg by C. J. Cherryh
- Adulthood Rites by Octavia E. Butler
- K-PAX by Gene Brewer
- The Left Hand of Darkness by Ursula K. Le Guin
- Calculating God by Robert J. Sawyer
- The Andalite Chronicles by Katherine Applegate
- Dangerous Days of Daniel X by James Patterson
- A Case of Conscience by James Blish
- Quozl by Alan Dean Foster
- Infinity's Shore by David Brin
- Dog Warrior by Wen Spencer
- The White Mountains by John Christopher
- Prey (Aliens Vs. Predator, Book 1) by Randy Stradley
- The Forever War by Joe Haldeman
- Learning the World: a Scientific Romance by Ken MacLeod
- The Encounter by K. A. Applegate
- Foreigner by C. J. Cherryh
- Footfall by Larry Niven
- Freedom's Choice by Anne McCaffrey
- Way Station by Clifford D. Simak
- Tainted Trail by Wen Spencer
- The Predator by K. A. Applegate
- The Alien by K. A. Applegate
- Bitter Waters by Wen Spencer
- The Mothman Prophecies by John A. Keel
- A Deepness in the Sky by Vernor Vinge
- Alien Secrets by Annette Curtis Klause
- Remnant Population by Elizabeth Moon
- The Message by K. A. Applegate
- V by Kenneth Johnson
- Puppet Masters by Robert A. Heinlein
- The 12th Planet by Zecharia Sitchin
- The Mote in God's Eye by Larry Niven
- Aliens: Alien Harvest by Robert Sheckley
- Agent to the Stars by John Scalzi
- The Invasion by K. A. Applegate
- The Capture by K. A. Applegate
- The Outsider by Melinda Metz
- A Fire Upon the Deep by Vernor Vinge
- Mostly Harmless by Douglas Adams
- The Forge of God by Greg Bear
- Inheritor by C. J. Cherryh
- Aliens Ate My Homework by Bruce Coville
- The Sparrow by Mary Doria Russell
- Music of the Spears: Aliens Series by Yvonne Navarro
- Aliens: The Labyrinth by Stephani Perry
- Invader by C. J. Cherryh
- Your Planet or Mine? (Otherworldly Men, Book 1) by Susan Grant
- So Long, and Thanks for All the Fish by Douglas Adams
- The Pool of Fire by John Christopher
- 2061: Odyssey Three by Arthur C. Clarke
- Titan by John Varley
- Freedom's Challenge by Anne McCaffrey
- Children of the Mind by Orson Scott Card
- The Departure by K. A. Applegate
- My Teacher Fried My Brains by Bruce Coville
- My Teacher Glows in the Dark (My Teacher Books) by Bruce Coville
- The Sickness by K. A. Applegate
- The Midwich Cuckoos by John Wyndham
- The Threat by Katherine Applegate
- Eon by Greg Bear
- The Pride of Chanur by C. J. Cherryh
- 2010: Odyssey Two by Arthur C. Clarke
- 2012: The War for Souls by Whitley Strieber
- Chanur's Venture by C. J. Cherryh
- Transformation: The Breakthrough by Whitley Strieber
- My Teacher Flunked the Planet by Bruce Coville
- The Day of the Triffids by John Wyndham
- Acorna, The Unicorn Girl by Anne McCaffrey
- Survival by Julie E. Czerneda
- Company's Coming by Arthur Yorinks
- Strangers by Dean R. Koontz
- Ringworld by Larry Niven
- The Hitchhiker’s Guide to the Galaxy by Douglas Adams
- The Algebraist by Iain M. Banks
- The Solution by Katherine Applegate
- Nor Crystal Tears by Alan Dean Foster
- White Queen by Gwyneth Jones
- Contest by Matthew Reilly
- The Decision by K. A. Applegate
- The Pretender by K. A. Applegate
- Animorphs Megamorphs #01: The Andalite's Gift by K. A. Applegate
- E.T. the Extra-Terrestrial by William Kotzwinkle
- The Suspicion by K. A. Applegate
- The Change by K. A. Applegate
- The Stranger by K. A. Applegate
- Only You Can Save Mankind by Terry Pratchett
- The Android by K. A. Applegate
- The Secret by K. A. Applegate
- Singing the Dogstar Blues by Alison Goodman
- Anathem by Neal Stephenson
- Have Spacesuit, Will Travel by Robert A. Heinlein
- Bloodchild: And Other Stories by Octavia E. Butler
- The Kif Strike Back by C. J. Cherryh
- Demon by John Varley
- Chindi by Jack McDevitt
- The Martian Chronicles by Ray Bradbury
- Aliens and Alien Societies (Science Fiction Writing Series) by Stanley Schmidt
- Pandora's Star by Peter F. Hamilton
- The Engines of God by Jack McDevitt
- The Warning by K. A. Applegate
- The Underground by K. A. Applegate
- In The Time of Dinosaurs by K. A. Applegate
- Rama Revealed by Arthur C. Clarke
- The Unknown by K. A. Applegate
- The Escape by K. A. Applegate
- The Reaction by K. A. Applegate
- Hunter's Run by George R. R. Martin
- Out of the Silent Planet by C. S. Lewis
- Destroyer by C. J. Cherryh
- Dragon's Egg by Robert L. Forward
- Carnival by Elizabeth Bear
- The Ringworld Engineers by Larry Niven
- Life, the Universe and Everything by Douglas Adams
- Revelation Space by Alastair Reynolds
- Gateway by Frederik Pohl
- 3001: The Final Odyssey by Arthur C. Clarke
- Colonization: Second Contact by Harry Turtledove
- Infected by Scott Sigler
- From a Buick 8 by Stephen King
- Aliens Colonial Marines Technical Manual by Lee Brimmicombe-Wood
- Aliens: Book One by Mark Verheiden
- The Heart of Valor by Tanya Huff
- Restoree by Anne McCaffrey
- Hush, little alien by Daniel Kirk
- Gods From Outer Space by Erich von Däniken
- Precursor by C. J. Cherryh
- The Forgotten by K. A. Applegate
- The Gods of Eden by William Bramley
- Uncharted Territory by Connie Willis
- Blacklisted by Gena Showalter
- The Restaurant at the End of the Universe by Douglas Adams
- Judas Unchained by Peter F. Hamilton
- The Faded Sun Trilogy by C. J. Cherryh
- Anvil of Stars by Greg Bear
- Savor Me Slowly (Alien Huntress, Book 3) by Gena Showalter
- The Legacy of Heorot by Larry Niven
- Deep Storm by Lincoln Child
- Red Planet by Robert A. Heinlein
- Explorer by C. J. Cherryh
- Clay's Ark by Octavia E. Butler
- Slaughterhouse-Five by Kurt Vonnegut
- Defender by C. J. Cherryh
- Ancient Shores by Jack McDevitt
- Pretender by C. J. Cherryh
- Aliens: DNA War (Aliens (Dark Horse)) by Diane Carey
- The Visitors by Clifford D. Simak
- Confirmation: The Hard Evidence of Aliens Among Us? by Whitley Strieber
- Matter by Iain M. Banks
- Omega by Jack McDevitt
- One Door Away from Heaven by Dean R. Koontz
- Star Surgeon by James White
- Close Encounters Of The Fourth Kind: Alien Abduction, UFOs,… by C. D. B. Bryan
- Breakthrough: The Next Step by Whitley Strieber
- Bruce Coville's Book of Aliens: Tales to Warp Your Mind by Bruce Coville
- The Search for Snout by Bruce Coville
- The Golden One (LucasFilm's Alien Chronicles, Book 1) by Deborah Chester
- Majestic by Whitley Strieber
- Enslave Me Sweetly by Gena Showalter
- North Wind by Gwyneth Jones
- Telzey Amberdon (Telzey Amberdon (Baen)) by James H. Schmitz
- I Left My Sneakers in Dimension X: A Rod Allbright Alien… by Bruce Coville
- Forty Thousand in Gehenna by C. J. Cherryh
- The Wave by Walter Mosley
- Mother of Demons by Eric Flint
- Cat-A-Lyst by Alan Dean Foster
- The Sirens of Titan by Kurt Vonnegut
- The Doomsday Conspiracy by Sidney Sheldon
- Aliens vs. Predator Omnibus, Vol. 1 by Various
- Alistair in Outer Space by Marilyn Sadler
- Aliens: Outbreak (Dark Horse Collection.) by Mark Verheiden
- Missing Time by Budd Hopkins
- Aliens Omnibus, Vol. 1 by Mark Verheiden
- Ringworld's Children by Larry Niven
- Red Handed (Teen Alien Huntress) by Gena Showalter
- Fallen Dragon by Peter F. Hamilton
- Phule's Company by Robert Asprin
- Odyssey by Jack McDevitt
- Acorna's Quest by Anne McCaffrey
- How to Lose an Extraterrestrial in 10 Days by Susan Grant
- The Complete Alien Omnibus by Alan Dean Foster
- TNT: Telzey & Trigger (Federation of the Hub, 2) by James H. Schmitz
- Hunter's Planet (Aliens Vs. Predator, Book 2) by Randy Stradley
- Invasion by Robin Cook
- The Crystal Eye (LucasFilm's Alien Chronicles, Book 3) by Deborah Chester
- The Disappeared: A Retrieval Artist Novel by Kristine Kathryn Rusch
- In Search of Ancient Gods by Erich von Däniken
- The Challenge by Susan Kearney
- Parallel Attraction by Deidre Knight
- The Biggest Secret: The Book That Will Change the World… by David Icke
- Golden Witchbreed by Mary Gentle
- A.L.I.E.E.E.N.: Archives of Lost Issues and Earthly… by Lewis Trondheim
- Infinity Beach by Jack McDevitt
- Shadow of the Hegemon by Orson Scott Card
- Axis by Robert Charles Wilson
- The Gold of the Gods by Erich von Däniken
- Stardance by Spider Robinson
- Callahan's Legacy by Spider Robinson
- Phule's Paradise by Robert Asprin
- Starmind by Spider Robinson
- Solaris by Stanisław Lem
- A Hymn Before Battle by John Ringo
- Annals of the Heechee by Frederik Pohl
- Polar City Blues by Katharine Kerr
- The Tower and the Hive by Anne McCaffrey
- A Confederation of Valor by Tanya Huff
- Blade Dancer (Stardoc) by S. L. Viehl
- Marrow by Robert Reed