Recommendations based on Callahan's Crosstime Saloonby Spider Robinson

* statistically, based on millions of data-points provided by fellow humans

  1. The Moon Is a Harsh Mistress

    by Robert A. Heinlein
    Revolutionary group fight for freedom from an oppressive lunar colony.

    In 2075, the Moon (Luna) is used as a penal colony by Earth's government, with three million inhabitants (called "Loonies") living in underground cities. Most Loonies are criminals, political exiles, ... (Wikipedia)

  2. Stranger in a Strange Land

    by Robert A. Heinlein
    A human raised by Martians must find his place in a hostile Earth society.

    The story focuses on a human raised on Mars and his adaptation to and understanding of humans and their culture. It is set in a post- Third World War United States, where organized religions are ... (Wikipedia)

  3. Have Space Suit—Will Travel

    by Robert A. Heinlein
    An adventurous teenager embarks on a thrilling space mission to save the future of the human race.

    The novel is set in the near future, when the Earth has established a few small scientific bases on the Moon. Clifford "Kip" Russell, enters an advertising jingle writing contest, hoping to win an ... (Wikipedia)

  4. The Forever War

    by Joe Haldeman
    A soldier's story of the horror of war and its consequences in the far future.

    The monumental Hugo and Nebula award winning SF classic— Featuring a new introduction by John Scalzi,The Earth's leaders have drawn a line in the interstellar sand—despite the fact that the fierce ... (Barnes & Noble)

  5. Cryptonomicon

    by Neal Stephenson
    A thrilling journey through the past and present, combining tech, history and adventure.

    The action takes place in two periods—World War II and the late 1990s, during the Internet boom and Asian financial crisis . In 1942, Lawrence Pritchard Waterhouse, a young United States Navy code ... (Wikipedia)

  6. Footfall

    by Larry Niven
    Aliens invade Earth, and humanity must fight back to save their planet from destruction.

    The alien Fithp resemble baby elephants with multiple prehensile trunks. They possess more advanced technology than humans but have developed none of it on their own. In the distant past on their ... (Wikipedia)

  7. The Stainless Steel Rat

    by Harry Harrison
    A comical sci-fi adventure of a master criminal outsmarting authorities to find true justice.

    In the vastness of space, the crimes just get bigger and Slippery Jim diGriz, the Stainless Steel Rat, is the biggest criminal of them all. He can con humans, aliens and any number of robots time ... (Goodreads)

  8. The Mote in God's Eye

    by Larry Niven
    A journey of first contact between the human race and an alien species.

    In the year AD 3017, humanity is slowly recovering from an interstellar civil war that tore apart the first Empire of Man. The Second Empire is busy establishing control over the remnants of its ... (Wikipedia)

  9. The Stars My Destination

    by Alfred Bester
    A man's quest for revenge in an intergalactic society, using teleportation and telepathy.

    At the time when the book is set, "jaunting"—personal teleportation—has so upset the social and economic balance that the Inner Planets are at war with the Outer Satellites. Gully Foyle of the ... (Wikipedia)

  10. Every Which Way But Dead

    by Kim Harrison
    A supernatural adventure story, exploring the consequences of a complicated past.

    T here's no witch in Cincinnati tougher, sexier, or more screwed up than bounty hunter Rachel Morgan, who's already put her love life and soul in dire jeopardy through her determined efforts to bring ... (Goodreads)

  11. The Restaurant at the End of the Universe

    by Douglas Adams
    Quirky sci-fi adventure following a group of time travelers seeking to save the future.

    Arthur Dent , Ford Prefect , Trillian , and Zaphod Beeblebrox leave the planet Magrathea on the Heart of Gold . A Vogon ship attacks them, and Arthur's attempt to have the ship's computer make him a ... (Wikipedia)

  12. Neutron Star

    by Larry Niven
    An interstellar adventure of a human astronaut and an alien AI, discovering a mysterious neutron star.

    Beowulf Shaeffer , a native of the planet We Made It and unemployed for the last eight months due to a stock market crash, is contracted by a Pierson's Puppeteer, the Regional President of General ... (Wikipedia)

  13. Dorsai!

    by Gordon R. Dickson
    A young man from a warrior planet becomes a mercenary, fighting in battles across the galaxy.

    The book is about Donal Graeme, warrior extraordinaire. In the Childe Cycle universe, the human race has split into a number of splinter cultures. Donal is a member of the Dorsai, a splinter culture ... (Wikipedia)

  14. Jingo

    by Terry Pratchett
    War brews between two neighboring countries while a group of unlikely heroes try to avert it.

    'Neighbours... hah. People'd live for ages side by side, nodding at one another amicably on their way to work, and then some trivial thing would happen and someone would be having a garden fork ... (Goodreads)

  15. Flag in Exile

    by David Weber
    Honor Harrington is exiled to a remote planet, where she must defend it against pirates and corrupt officials while navigating political intrigue.

    After the scandal caused by killing Pavel Young in a duel, Honor retreats to Grayson until things settle down on Manticore. She intends to oversee the development of her Steading, and overcome the ... (Wikipedia)

  16. I, Robot

    by Isaac Asimov
    A collection of science fiction stories exploring the relationship between humans and robots.

    Isaac Asimov's I, Robot launches readers on an adventure into a not-so-distant future where man and machine , struggle to redefinelife, love, and consciousness—and where the stakes are nothing less ... (Goodreads)

  17. Lamb: The Gospel According to Biff, Christ's Childhood Pal

    by Christopher Moore
    A retelling of the life of Jesus Christ, told through the eyes of his childhood best friend.

    Biff is resurrected in the 20th Century to complete missing parts of the Bible , under the inefficient supervision of Raziel ; wherefore Biff narrates that he and Joshua (by Biff's account, the ... (Wikipedia)

  18. Guards! Guards!

    by Terry Pratchett
    A group of misfits join forces to save Ankh-Morpork from a dragon terrorizing their city.

    This is where the dragons went. They lie ... not dead, not asleep, but ... dormant. And although the space they occupy isn't like normal space, nevertheless they are packed in tightly. They could put ... (Goodreads)

  19. Soul Music

    by Terry Pratchett
    A young girl's adventures through a magical world of music and misadventures.

    A young harpist, Imp Y Celyn from Llamedos (spelled backwards, "sod 'em all", a tribute to Llareggub in Welsh poet Dylan Thomas', Under Milk Wood, ), comes to Ankh-Morpork in hopes of becoming ... (Wikipedia)

  20. The Masterharper of Pern

    by Anne McCaffrey
    An apprentice harper strives to protect his community against a deadly plague while learning magical music.

    Robinton was rejected by his jealous father, Petiron, and spent most of his childhood with his nurturing mother. Since Robinton grew up in a very musically-inclined setting, all the inhabitants ... (Wikipedia)

  21. A Wind in the Door

    by Madeleine L'Engle
    A magical journey exploring the mysteries of the universe and the power of love.

    Main character Meg Murry is worried about her brother Charles Wallace, a 6-year-old genius bullied at school by the other children. The new principal of the elementary school is the former high ... (Wikipedia)

  22. 2001: A Space Odyssey

    by Arthur C. Clarke
    An interstellar journey of exploration, confronting humanity's place in the universe.

    A mysterious alien civilization uses a tool with the appearance of a large crystalline monolith to investigate worlds across the galaxy and, if possible, to encourage the development of intelligent ... (Wikipedia)

  23. Cat's Cradle

    by Kurt Vonnegut Jr.
    A satirical exploration of human folly, exposing the dangers of unchecked science and technology.

    Told with deadpan humour and bitter irony, Kurt Vonnegut's cult tale of global destruction preys on our deepest fears of witnessing Armageddon and, worse still, surviving it ... Dr Felix Hoenikker, ... (Goodreads)

  24. Crystal Singer

    by Anne McCaffrey
    A young woman's journey to fulfill her dream of becoming a professional crystal singer.

    Her name was Killashandra Ree. And after ten grueling years of musical training, she was still without prospects. Until she heard of the mysterious Heptite Guild who could provide careers, security, ... (Goodreads)

  25. The Martian Chronicles

    by Ray Bradbury
    Human colonists struggle for survival on Mars, facing the challenges of a new world.

    The strange and wonderful tale of man’s experiences on Mars, filled with intense images and astonishing visions. Now part of the Voyager Classics collection. The Martian Chronicles tells the story of ... (Goodreads)

  26. Snow Crash

    by Neal Stephenson
    A hacker's quest in a futuristic America dealing with a mysterious computer virus.

    Hiro Protagonist is a hacker and pizza delivery driver for the Mafia. He meets Y.T. (short for Yours Truly), a young skateboard Kourier ( courier ) who refers to herself in the third person , during ... (Wikipedia)

  27. Dirk Gently's Holistic Detective Agency

    by Douglas Adams
    An eccentric detective's surreal journey through time and space to solve a mysterious case.

    Richard MacDuff attends the Coleridge dinner at his old college St Cedd's , where he witnesses his former tutor, Professor Urban "Reg" Chronotis , perform an inexplicable magic trick in which he ... (Wikipedia)

  28. Enchantment

    by Orson Scott Card
    A young boy's adventure through a magical kingdom to save a princess from an evil wizard.

    The protagonist and narrator is Ivan Smetski, a young Ukrainian -American linguist who specializes in Old Church Slavonic , a language from 10th-century Ruthenia . In 1992, Ivan returns to his native ... (Wikipedia)

  29. Sharpe's Rifles

    by Bernard Cornwell
    A tale of heroism and courage in the Napoleonic Wars, as one man rises to become a legendary soldier.

    Sharpe's battalion, acting as rearguard to the British Army in its retreat to Corunna , are cut down by a squadron of French regular cavalry. Sharpe takes up Captain Murray's heavy cavalry sword ... (Wikipedia)

  30. Dead Witch Walking

    by Kim Harrison
    A dark urban fantasy about a witch's fight for survival in a world of humans, demons and vampires.

    All the creatures of the night gather in "the Hollows" of Cincinnati, to hide, to prowl, to party... and to feed. Vampires rule the darkness in a predator-eat-predator world rife with dangers beyond ... (Goodreads)