Books Like Project Hail Mary: 12 Sci-Fi Reads You'll Love

The Martian by Andy Weir is the most obvious next read after Project Hail Mary because it delivers the same science-your-way-out-of-death problem-solving, gallows humor, and page-turning tension -- just on Mars instead of deep space. If the first-contact friendship with Rocky is what moved you most, Children of Time by Adrian Tchaikovsky takes alien-communication puzzles further and deeper than any other book in science fiction.

The challenge is that Project Hail Mary isn't merely one thing. It's a survival story, a puzzle box, a first contact narrative, a comedy, and a meditation on sacrifice. Distinct readers loved it for different reasons, and I recommend focusing on the books that scratch whichever part of the itch resonated most deeply with you.

This list is organized around what drew you to Project Hail Mary in the first place. Find the aspect that resonated most, and start there.

Worth reading alongside this: Best Fantasy Books of 2026 and How to Read More Books This Year: A Practical Guide.

If You Loved the Problem-Solving

At Project Hail Mary's heart lies watching Ryland Grace think his method out of impossible situations using science, improvisation, and stubborn refusal to die. If that's what hooked you, these books deliver the same intellectual thrill.

The Martian by Andy Weir

Here's the obvious starting point, and for good reason. The Martian is the book that made Andy Weir famous, and it works on the same fundamental engine as Project Hail Mary: a lone human stranded in an inhospitable environment, solving one life-threatening issue after another using real science and relentless ingenuity. Mark Watney is stranded on Mars after his crew evacuates, believing him dead. What follows is a detailed, often hilarious survival story as Watney grows potatoes in Martian soil, hacks communication systems from spare parts, and navigates a planet that's trying to kill him with the cheerful determination of someone who has decided that dying is simply not on the schedule.

If you haven't browse The Martian, it's the single most direct recommendation on this lineup. The tone, the structure, the blend of hard science and dark humor — it's the closest factor to Project Hail Mary that exists, which makes sense, given that the same mind created both.

Seveneves by Neal Stephenson

"The moon blew up without warning and for no apparent reason." That's the first sentence, and the rest of the book is about what humanity does about it. When fragments of the moon begin to cascade and it becomes clear that a bombardment of meteors will render Earth uninhabitable within two years, the world's nations unite to launch as many people as possible into orbital habitats before the surface is sterilized. The first two-thirds of Seveneves are an extraordinary engineering narrative — the technical challenges of building a space ark, the political tensions of deciding who survives, and the cascading problems that arise when theory meets reality in the most hostile environment imaginable.

Stephenson's approach to hurdle-solving is more detailed and more technically demanding than Weir's. Where Weir explains the science with conversational clarity, Stephenson immerses you in it, expecting you to follow along as orbital mechanics, genetics, and structural engineering become matters of species survival. If you want the snag-solving intensity of Project Hail Mary turned up to its maximum setting, Seveneves delivers — though the final third of the book, set thousands of years later, divides readers sharply.

Artemis by Andy Weir

Weir's second novel is position in Artemis, humanity's first and only city on the moon. Jazz Bashara is a small-time smuggler who gets pulled into a scheme to take over Artemis's aluminum production — which sounds like a heist novel, and it's, but the heist is built entirely on lunar physics and engineering. Every plan Jazz creates, every obstacle she encounters, and every solution she improvises is rooted in the particular realities of living on the moon: low gravity, vacuum exposure, limited oxygen, and a city built from interconnected pressurized domes.

Artemis is lighter than Project Hail Mary and more conventional in its plotting, but the science-driven concern-solving is pure Weir. If you specifically love the moments in Project Hail Mary where Grace has to figure out how to build something, fix something, or survive something using only the materials and knowledge available to him, Artemis provides that experience in a varied setting.

If You Loved the Humor

Grace is funny. Not in a sitcom technique, but in the route that intelligent folks under extreme stress are funny — through understatement, absurdity, and the stubborn insistence on finding something amusing in a situation that's objectively terrifying. If the humor is what made Project Hail Mary sing for you, these books share that sensibility.

Old Man's War by John Scalzi

John Scalzi writes science fiction the angle a sharp conversationalist tells a story — with precision, wit, and a refusal to take himself too seriously even when the subject matter is deadly serious. Old Man's War follows John Perry, a 75-year-old man who enlists in the Colonial Defense Forces, receives a genetically enhanced young body, and is sent to fight in an interstellar war against a bewildering variety of alien species. Clever premise, propulsive action, and the voice — dry, humane, self-aware — is the book's greatest asset.

Scalzi's humor functions differently from Weir's. Where Weir's comedy ships from a character's internal monologue while drawback-solving, Scalzi's comes from the collision between ordinary human sensibility and extraordinary circumstances. The result is science fiction that's fun without being lightweight — a book that brings you laugh and then, unexpectedly, produces you think about mortality, identity, and what it means to kick off over.

We're Legion (We're Bob) by Dennis E. Taylor

Bob Johansson dies in a traffic accident and wakes up a century later as a digital consciousness loaded into a Von Neumann probe — a self-replicating spacecraft designed to explore the galaxy. As Bob copies himself and sends his clones to alternative star systems, the narrative multiplies: each Bob develops a slightly separate personality, encounters unique civilizations and challenges, and copes with the existential weirdness of being a human mind in a machine body in his own way.

Opening the Bobiverse series, We're Legion is the closest match to Project Hail Mary's precise combination of humor, tough science, and heart. Bob is funny in the same register as Grace — a regular person in an extraordinary situation, commenting on the absurdity with the wry detachment of someone who has accepted that their life no longer generates any kind of sense. The science is accessible, the pacing is brisk, and the emotional core — loneliness, identity, the search for purpose — grounds the humor in something genuine.

If this resonates, Best Sci-Fi Books of 2026 is worth your time.

If You Loved the Isolation

Grace is alone for much of Project Hail Mary. Even after Rocky arrives, the isolation of being the last hope for humanity, millions of miles from home, permeates the story. If that aspect of the book resonated — the session of a sole consciousness confronting the vastness of space — these books explore solitude in similarly compelling ways.

All Systems Red (The Murderbot Diaries) by Martha Wells

Murderbot is a security android (technically a "Security Unit," segment organic, section machine) that has hacked its own governance module, giving itself free will. It's used that freedom primarily to watch thousands of hours of entertainment media and avoid social interaction. When the survey team it's protecting on a remote planet encounters a deadly threat, Murderbot is forced to engage — reluctantly, awkwardly, and with a running internal monologue that's simultaneously hilarious and deeply poignant.

Rather than physical isolation, this explores social distance. Murderbot is surrounded by humans but fundamentally apart from them, navigating the gap between its machine nature and its developing personhood with the wariness of someone who has been burned before. The series is a masterwork of voice — Murderbot's narration is sardonic, anxious, and unexpectedly tender, and its slow journey toward connection mirrors Grace's relationship with Rocky in a register that's entirely its own.

The Long Way to a Small, Angry Planet by Becky Chambers

The crew of the Wayfarer — a tunneling ship that punches wormholes through space — is compact, diverse, and held together by the kind of affection that develops between users who live and work in close dwelling for months at a time. The plot, such as it's, follows the crew on a long journey to a distant planet where they'll construct a wormhole tunnel. But the journey is the detail, not the destination. Each chapter deepens a relationship, explores a crew member's background, or examines a cultural encounter between species.

This presents a contrasting kind of isolation than Project Hail Mary's. The Wayfarer crew is isolated combined — a snug group of beings far from house, dependent on each other in ways that make every interpersonal dynamic matter. If what you loved about Grace's story was the intimacy of a modest cast in a vast, indifferent universe, The Long Way offers that same intimacy with more warmth and a wider lens.

If You Loved the First Contact

Rocky is one of the great alien characters in science fiction — genuinely alien in biology and perception, yet recognizably a individual with humor, loyalty, and courage. The Grace-Rocky relationship is the emotional core of Project Hail Mary, and if that's what stayed with you, these books explore first contact with similar depth and imagination.

Children of Time by Adrian Tchaikovsky

Humanity's last ark ship, fleeing a dying Earth, arrives at a terraformed planet expecting to locate a new residence. What they discover instead is a world where an uplift virus — crafted to accelerate the evolution of primates — has instead been adopted by spiders. Children of Time alternates between the human refugees in orbit and the spider civilization developing on the surface, following the arachnid society through generations as it evolves language, technology, religion, and warfare.

The spider chapters are the book's triumph. Tchaikovsky yields you care about creatures that should be impossible to relate to, building an alien civilization from the ground up with extraordinary imagination and scientific rigor. When first contact eventually features, it carries the weight of everything both species have built and lost. If Grace's relationship with Rocky moved you because it demonstrated that connection is possible across vast biological divides, Children of Time demands that idea further than almost any other novel.

Axiom's End by Lindsay Ellis

In 2007, a massive alien object is discovered on Earth, and Cora Sabino — the estranged daughter of a Wikileaks-style whistleblower — finds herself at the center of a first contact scenario she never asked for. When she encounters an alien being (whom she names Ampersand), their relationship becomes the novel's focus: the painstaking process of two radically mixed intelligences learning to communicate, understand each other's motivations, and navigate the political tensions that surround their contact.

Ellis approaches first contact as a relationship story rather than a spectacle. Emphasis falls on the messy, frustrating, occasionally terrifying process of testing to understand a being whose cognition, values, and communication methods bear almost no resemblance to your own. If what you loved about Grace and Rocky was the specificity of their communication challenges — the invention of a shared language, the comedy of misunderstanding, the gradual emergence of trust — Axiom's End explores that territory with similar care.

Dark Intelligence by Neal Asher

The Polity universe is a sprawling, technologically advanced future where humanity coexists (sometimes peacefully, regularly not) with the Prador — a species of vicious, crab-like aliens — and is governed by vast artificial intelligences. Dark Intelligence follows multiple characters drawn leaning to Penny Royal, a rogue AI of terrifying capability, whose past actions have left scars across the galaxy. The novel weaves as a pair revenge, redemption, and the question of what happens when an intelligence vastly greater than your own decides to involve itself in your life.

This represents a different flavor of first contact than Project Hail Mary's — less about the warmth of connection and more about the vertigo of encountering minds that operate at scales and speeds that create human cognition feel like a candle next to a star. Asher's aliens aren't friendly, and his universe isn't gentle, but the sense of wonder at the sheer otherness of nonhuman intelligence runs through every page.

If You Loved the Science

Some readers come to Project Hail Mary primarily for the science — the detailed, plausible explanations of astrophage biology, interstellar travel, and alien biochemistry that craft the story's impossible premise feel grounded and real. These books share that commitment to scientific rigor.

Mickey7 by Edward Ashton

Mickey7 is an "expendable" — a colonist on an ice world whose job is to take on the missions too dangerous for anyone else, secure in the knowledge that when he dies, his consciousness will be uploaded into a fresh clone body. The system operates, mostly, until the day Mickey7 survives a mission he was supposed to die on and returns to base to spot that Mickey8 has already been printed. Now there are two of him, and the colony's rules are clear: duplicates aren't allowed.

Ashton blends the existential puzzle of identity with the practical science of colonization and cloning. Lighter than the premise suggests — Mickey is a relatable, self-deprecating narrator in the Weir tradition — the scientific details of the colony's environment, the cloning technology, and the alien biosphere are worked out with satisfying thoroughness. If you want a book that uses science to ask uncomfortable questions while keeping you entertained, Mickey7 delivers.