Books Similar to Project Hail Mary: 12 Science Fiction Reads Worth Trying Next

Books similar to Project Hail Mary share three things that make Andy Weir's novel work: a protagonist who solves problems with real science shown on the page step by step, stakes big enough to matter (a species, a planet, a sun), and enough humor and hope that the reading experience never turns bleak. This list sticks to those three qualities rather than just "also has space in it." ## The Martian by Andy Weir (2011) If you read Project Hail Mary and want more of exactly that voice, start with Weir's first novel. Mark Watney is stranded alone on Mars and works his way out of one lethal problem after another using chemistry, botany, and duct tape. The humor is the same wisecracking, competence-porn style as Ryder Grace's narration, and the science is shown in the same working-it-out-loud way. The difference is scale: The Martian is one man solving survival math with no alien contact and no species-level stakes. If Project Hail Mary's science parts were your favorite chapters, this book is almost entirely that. [Find The Martian on Amazon](https://www.amazon.com/s?k=The+Martian+Andy+Weir&tag=31813-20) ## Children of Time by Adrian Tchaikovsky (2015) Tchaikovsky's Hugo Award winner builds an uplifted spider civilization from first principles: their biology, their science, their religion, all following logically from how a spider brain and body would actually develop intelligence. It is the closest thing on this list to the care Weir put into designing Rocky's species and homeworld. The novel alternates between the spiders' millennia of development and a desperate human generation ship approaching their planet, and the eventual first contact carries the same mix of fear and wonder that defines the Rocky chapters of Project Hail Mary. [Find Children of Time on Amazon](https://www.amazon.com/s?k=Children+of+Time+Adrian+Tchaikovsky&tag=31813-20) ## Semiosis by Sue Burke (2018) Burke's novel follows generations of human colonists on a planet where the dominant intelligence turns out to be a plant. Working out how to communicate with something that thinks on an entirely different timescale and through entirely different senses is the same puzzle Ryder faces with Rocky, just stretched across a hundred years instead of a few months. The book takes plant intelligence completely seriously as science rather than as a gimmick, which is exactly the kind of rigor that made Rocky's chemistry-based language feel believable. [Find Semiosis on Amazon](https://www.amazon.com/s?k=Semiosis+Sue+Burke&tag=31813-20) ## All Systems Red by Martha Wells (2017) The first Murderbot Diaries novella gives you a reluctant, dryly funny non-human narrator forming a bond with humans it did not choose to like, in short order and short chapters. Murderbot would rather watch soap operas than save anyone, but does the job anyway, which is the same understated heroism that makes Rocky's loyalty land so hard in Project Hail Mary. It is a fast read (under 150 pages) if you want the humor and the unlikely-friendship beats without committing to a doorstop novel. [Find All Systems Red on Amazon](https://www.amazon.com/s?k=All+Systems+Red+Martha+Wells&tag=31813-20) ## The Long Way to a Small, Angry Planet by Becky Chambers (2014) Chambers writes the gentlest book on this list: a mixed human-and-alien crew on a tunneling ship, working a long-haul job together and slowly becoming a real family. There is real science and real danger, but the emotional center is the same thing that makes the Rocky sections of Project Hail Mary so beloved: genuine affection between species that started as strangers. If the loneliness of Ryder's early chapters was hard to read and you wanted more warmth sooner, start here. [Find The Long Way to a Small, Angry Planet on Amazon](https://www.amazon.com/s?k=The+Long+Way+to+a+Small+Angry+Planet+Becky+Chambers&tag=31813-20) ## Seveneves by Neal Stephenson (2015) Stephenson's novel opens with the Moon breaking apart and the human race given roughly two years to get enough people into orbit before Earth becomes uninhabitable. The first two-thirds work through orbital mechanics, genetics, and engineering constraints with the same rigor Weir applies to astrophage and relativistic fuel math, just at a civilizational scale instead of a solo-astronaut scale. It is a longer, denser read than Project Hail Mary, and the final third jumps five thousand years ahead, which is a bigger structural swing than anything Weir attempts. [Find Seveneves on Amazon](https://www.amazon.com/s?k=Seveneves+Neal+Stephenson&tag=31813-20) ## The Three-Body Problem by Liu Cixin (2008) Liu Cixin's novel builds its plot around real physics, from the three-body orbital problem in the title to a first-contact scenario that plays out over decades of careful, paranoid strategy. The tone is much darker and more political than Project Hail Mary, but the underlying commitment to working the science out correctly on the page is the same instinct. Translated into English by Ken Liu, it won the Hugo Award for Best Novel and remains the most influential hard science fiction novel of the last two decades. [Find The Three-Body Problem on Amazon](https://www.amazon.com/s?k=The+Three-Body+Problem+Liu+Cixin&tag=31813-20) ## Contact by Carl Sagan (1985) Sagan's novel is the classic against which every scientifically grounded first-contact story gets measured. Astronomer Ellie Arroway detects a signal from Vega and spends the book working through what a genuine, evidence-based first contact would actually look like, politically and scientifically, decades before Weir wrote Rocky. It is a slower, more contemplative book than Project Hail Mary, built around Sagan's own scientific worldview rather than action-adventure pacing, but the DNA of "solve this using real physics and real reasoning" runs through both. [Find Contact on Amazon](https://www.amazon.com/s?k=Contact+Carl+Sagan&tag=31813-20) ## Artemis by Andy Weir (2017) Weir's second novel trades the survival plot for a heist on a Moon colony, following smuggler Jazz Bashara as a con goes wrong. The engineering-brain humor and the habit of explaining exactly how something works (in this case, welding in vacuum and lunar economics) are pure Weir, even without the emotional weight of Project Hail Mary's stakes. It is the shortest, lightest read on this list if you want Weir's voice without committing to another 450-page book. [Find Artemis on Amazon](https://www.amazon.com/s?k=Artemis+Andy+Weir&tag=31813-20) ## Blindsight by Peter Watts (2006) Watts pushes the first-contact premise in the opposite direction from Project Hail Mary's warmth: his aliens are genuinely, unsettlingly incomprehensible, and the human crew sent to meet them includes a resurrected vampire and a woman with four surgically separated personalities. The science, especially the neuroscience of consciousness, is rigorously researched and central to the plot. Read this if the wonder of meeting something truly alien appealed to you more than the friendship did, and you want that idea taken to its most unnerving conclusion. [Find Blindsight on Amazon](https://www.amazon.com/s?k=Blindsight+Peter+Watts&tag=31813-20) ## Old Man's War by John Scalzi (2005) Scalzi's novel follows 75-year-olds who enlist in a war against alien species in exchange for young, enhanced bodies. It shares Project Hail Mary's brisk pacing, its habit of explaining military and biological technology in clear, readable terms, and a similar sense of humor that keeps heavy stakes from becoming grim. It leans more toward military science fiction than Weir's survival-and-friendship story, but readers who enjoyed the propulsive, chapter-a-day readability of Project Hail Mary tend to move through this one just as fast. [Find Old Man's War on Amazon](https://www.amazon.com/s?k=Old+Man%27s+War+John+Scalzi&tag=31813-20) ## To Sleep in a Sea of Stars by Christopher Paolini (2020) Paolini's doorstop of a novel follows a xenobiologist who makes first contact with an ancient alien relic and has to survive the political and physical fallout, alone for long stretches, using her scientific training to stay alive. It has the same beats as Project Hail Mary: a scientist protagonist, isolation, and problem-solving under pressure, stretched across a much longer page count. This is the pick for readers who finished Project Hail Mary wanting more pages of exactly that experience and don't mind a longer commitment. [Find To Sleep in a Sea of Stars on Amazon](https://www.amazon.com/s?k=To+Sleep+in+a+Sea+of+Stars+Christopher+Paolini&tag=31813-20) --- ## How to Pick Your Next Book If you loved **Andy Weir's exact voice and the science-shown-on-the-page style**: start with The Martian or Artemis. If you loved **Rocky and the first-contact friendship**: start with Children of Time, Semiosis, or All Systems Red. If you want **more warmth and less danger**: The Long Way to a Small, Angry Planet is the gentlest option here. If you want **the science pushed even harder, at civilizational scale**: Seveneves or The Three-Body Problem. If you want **the alien-contact wonder pushed toward unease instead of warmth**: Blindsight. For more reading lists in this vein, see our guides to [best hard science fiction books](/blog/best-hard-science-fiction-books-2026), [best sci-fi books 2026](/blog/best-sci-fi-books-2026), and [books similar to Dune](/blog/books-similar-to-dune-2026). --- ## FAQ **What book is most similar to Project Hail Mary?** The Martian, since it is by the same author and uses the same one-problem-at-a-time survival structure. For the first-contact side specifically, Children of Time and Semiosis are the closest matches. **Are there other Andy Weir books like Project Hail Mary?** Yes, The Martian (2011) and Artemis (2017). Both keep Weir's engineering-brain humor, but neither has an alien-contact plot or the emotional weight of Rocky's friendship with Ryder. **What should I read if I loved the friendship with Rocky?** All Systems Red by Martha Wells and The Long Way to a Small, Angry Planet by Becky Chambers both center on unlikely bonds between very different kinds of minds, with the same warmth that makes Rocky's chapters memorable.