Project Hail Mary: A Novel

Project Hail Mary: A Novel

by Andy Weir

4.7 (207,866)

4.7 stars from 207,866 reviews. One of the highest rated Thriller books we track.

482 pages~8 hr readPublished by Ballantine Books

$14.99At peak price

Last checked: Dec 28, 2025

Must ReadHighly rated with thousands of reviews. A proven favourite.
Price history: $1.99 $14.99

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Fans of these authors will like this...

  • Andy Weir
  • Ernest Cline
  • Brandon Sanderson

Fans of these books will like this...

  • The Martian
  • Ready Player One
  • Rendezvous with Rama

Perfect for you if...

  • You love hard science fiction that actually explains how things work without losing the human story at its centre.
  • You want a page-turner that doesn't sacrifice intelligence for pace, with genuine stakes that matter.
  • You enjoyed The Martian but wish it had gone further into the cosmos, with stranger problems and higher stakes.

Maybe not for you if...

  • You prefer character-driven literary fiction where the science takes a backseat to emotional depth.
  • You find detailed technical explanations tedious or distracting from narrative momentum.
  • You're looking for a sprawling space opera with multiple perspectives or a large cast.

About this book

Ryland Grace wakes alone on a spacecraft millions of miles from Earth with no memory of his own name, his mission, or how he arrived there. Two dead crewmates are his only companions. As his memories slowly return, he realizes he is the sole survivor of a last-chance mission critical to humanity's survival. If he fails, both Earth and humanity will perish. With the clock ticking and no other humans within light-years, Grace must solve an impossible scientific mystery and confront an extinction-level threat to the species. Alone in his tiny ship hurtling through space, he works to puzzle out his assignment and complete it before it is too late. Or perhaps he is not entirely alone. Project Hail Mary is a tale of discovery, speculation, and survival set in deep space, taking readers to places beyond the scope of Weir's previous work.

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Price History

Kindle price over time. Green zones = periods when the book was free.

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Free$7.50$14.99Oct '22Jul '23Dec '23Dec '25
$1.99$14.99

Price has dropped 6 times over the last 3 years. Goes on sale roughly every 132 days. Typically stays discounted for 1 day.

Sales Rank

Amazon sales rank: lower number = better selling book. #1 is the bestseller.

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#1#182,868#365,734Aug '20Jun '22Sep '23Feb '26

Currently #1 in the Kindle store — a top-100 bestseller. Climbing the charts — 25% improvement recently.

Rating & Reviews

Purple line = star rating over time. Blue area = total review count growth.

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4.0★4.5★5.0★May '23Apr '24Apr '25Apr '26RatingReviews

Currently 4.7★ from 207,866 reviews

Gaining approximately 2,977 new reviews per month. Reader interest is surging. Rating has remained stable at 4.7 over the tracking period.

Sale Prediction

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Free$7.50$14.99Oct '22Jul '23Dec '23Dec '25PredictedDec '25

Actual Predicted

Based on past patterns, a price drop could happen soon. It typically goes on sale every 132 days and the last drop was 348 days ago. Typical discount: 87% off.

Prices shown in USD from Amazon US. We continuously pull new data to improve tracking. If dates look old, it usually means there has been no significant change since the last data point.

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Andy Weir

1 book on Vagrant Press

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