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Book · 2021

Project Hail Mary

by Andy Weir

A dying astronaut wakes up alone on a spaceship with amnesia, two corpses for company, and Earth's one shot at survival riding on him.

17,292
Total mentions
9,730
Unique Reddit accounts
case-insensitively deduplicated across the selected corpus
154,726
Total upvotes
sum of comment scores across recognized mentions — consensus weight; never changes rank
Positive
Excerpt sentiment
22 positive — 22 of 30 excerpts take a position
8
Subreddits
where it's mentioned

What does Reddit think of Project Hail Mary?

17277 mentions and almost nobody arguing. r/Fantasy's top quote is four words: "such a fun ride" (↑575). r/suggestmeabook calls it "fun, easy, and sucks you in," then adds it's "a great restart into pleasure reading" (↑552), which is a specific kind of praise, book as recovery tool, not book as achievement. The recurring subplot across these threads isn't the plot at all. It's the audiobook. Three separate top-upvoted comments push the audio edition specifically, one calling it "a must listen" (↑375), another noting the narrator suits Weir's "conversational style" (↑415). That's r/suggestmeabook's format preference showing through, not necessarily true of the print readership in r/printSF, which logged 1850 mentions here without a single scored quote making the cut. r/booksuggestions runs the highest sentiment of any measured sub. Nothing displayed pushes back.

Evidence, not a rating

Recommendation receipt

A compact, source-linked answer derived from the same Reddit sample and editorial synthesis as this page.

Editorial summary

17277 mentions and almost nobody arguing. r/Fantasy's top quote is four words: "such a fun ride" (↑575). r/suggestmeabook calls it "fun, easy, and sucks you in," then adds it's "a great restart into pleasure reading" (↑552), which is a specific kind of praise, book as recovery tool, not book as achievement. The recurring subplot across these threads isn't the plot at all. It's the audiobook.

Read if

Stuck in a reading slump and need something that pulls you back in without asking much of you? That's the specific use case r/suggestmeabook keeps recommending it for. Commute or gym time beats a couch and a paperback for you? Go straight to the audiobook; three separate top comments here recommend that edition by name over the print one. Already loved The Martian's tone, jokes under pressure, a narrator who explains his own thinking out loud?

Skip or borrow first if

Every top-upvoted quote here is a short, enthusiastic endorsement; none of them engage with plot mechanics, pacing, or the twist enough to argue with.

Strongest published evidence

“PROJECT HAIL MARY - such a fun ride”
r/Fantasy source · score 575 ↗

Dissent & strongest caveat

Every top-upvoted quote here is a short, enthusiastic endorsement; none of them engage with plot mechanics, pacing, or the twist enough to argue with.

Tracked mentions
17,292 mentions
Distinct Reddit accounts
9,730 distinct account identifiers
Tracked subreddits
8 subreddits
Published source excerpts
30 source excerpts
Average sentiment
Average sentiment +0.62
Last updated
Updated September 2, 2026

Account identifiers are case-insensitively deduplicated across the selected corpus and are not a count of distinct people. Average sentiment summarizes only scored published excerpts; unscored excerpts are excluded rather than treated as neutral. It does not describe all mentions and is not a star rating. Methodology →

Community feedback & reader fit

Themes

  • · Amnesia-driven first-person mystery structure
  • · The audiobook edition as its own recommendation category
  • · Comfort reading and reading-slump recovery
  • · Andy Weir's conversational prose style

Common praise

  • + Gets specifically recommended as the book to break a reading slump, not just a good read in general (↑552).
  • + Three different top-upvoted comments push the audiobook by name, one flatly calling it "a must listen" (↑375).
  • + Shows up as the go-to answer alongside Dungeon Crawler Carl in a "give me something absorbing" thread, with First Law getting only a runner-up mention (↑335).

Common criticism

  • − Every top-upvoted quote here is a short, enthusiastic endorsement; none of them engage with plot mechanics, pacing, or the twist enough to argue with.
  • − r/printSF logged 1850 mentions but contributed no scored excerpt to this sample, so the harder sci-fi crowd's actual take isn't represented in what's displayed.
  • − The audiobook keeps getting credited for the experience, which raises the question of how much of the praise here is about Weir's writing versus Ray Porter's narration.

Who it's for

Stuck in a reading slump and need something that pulls you back in without asking much of you? That's the specific use case r/suggestmeabook keeps recommending it for. Commute or gym time beats a couch and a paperback for you? Go straight to the audiobook; three separate top comments here recommend that edition by name over the print one. Already loved The Martian's tone, jokes under pressure, a narrator who explains his own thinking out loud? The conversational style gets cited as the reason the audio format works so well. If you're chasing prose someone will argue about on its literary merits, this data doesn't have that argument on display.

Mentions over time

Q4 2020 peak: 1,388/qtr Q2 2026

Top subreddits

Which Reddit comments matter for Project Hail Mary?

The most relevant excerpts across the subreddits where this book is mentioned — opinionated, argued takes first, then top-upvoted mentions. Click through to read the full thread.

PROJECT HAIL MARY - such a fun ride

r/Fantasy ↑ 575 positive

Project Hail Mary by Andy Wier Fun, easy, and sucks you in. a great restart into pleasure reading.

r/suggestmeabook ↑ 552 positive

I think all of Andy Weir's work, but especially _Project Hail Mary_ are way better as audiobooks. The reader is great, and the writing has a conversational style that really benefits from being read aloud.

r/suggestmeabook ↑ 415 positive

Project Hail Mary by Andy Weir. It’s a must listen

r/suggestmeabook ↑ 375 positive

Absolutely - Project Hail Mary and Dungeon Crawler Carl. Honorable mention to First Law series.

r/suggestmeabook ↑ 335 positive

Project Hail Mary by Andy Weir has a wonderful audiobook!

r/suggestmeabook ↑ 322 positive

Project Hail Mary was a treat! Specifically get him onto the audiobook

r/booksuggestions ↑ 304 positive

Project Hail Mary by Andy Weir Finished in 3 days and I’ve been in a reading coma ever since. So good!!

r/suggestmeabook ↑ 301 positive

Project Hail Mary. Read it in one sitting.

r/suggestmeabook ↑ 287 positive

I've been lucky to have a few this year that had me very sleep deprived at work the next day: \-The Broken Earth Trilogy by NK Jemison \-A Deadly Education by Naomi Novik \-House in the Cerulean Sea by TJ Klune \-Project Hail Mary by Andy Weir

r/suggestmeabook ↑ 286 positive

And then read Project Hail Mary by the same author. Don’t look up any spoilers and don’t watch the trailer for the upcoming movie. That book is gripping.

r/suggestmeabook ↑ 284 positive

Project Hail Mary by Andy Weir. Once you get to it you’ll know why it is much better as audiobook vs print.

r/suggestmeabook ↑ 270 positive

{{The Martian}} and {{Project Hail Mary}}. Listen to the second one on audiobook if you can - something neat happens in the audio version.

r/suggestmeabook ↑ 250 positive

Project Hail Mary is amazing as an audiobook. I can’t really explain why without spoilers, but the experience is definitely enhanced by being an audiobook.

r/suggestmeabook ↑ 242 positive

Project Hail Mary by Andy Weir! Wasn’t a sci-fi fan before and now I’m definitely gonna be looking into more. It’s a great read for anyone and explains the science stuff so so well—I never felt lost. It’s heartwarming, funny, exciting, and has such big stakes and loveable, complex characters. It’s j…

r/suggestmeabook ↑ 228 positive

Readers also mention

Books that share discussion threads with Project Hail Mary — counted from the comments, not curated.

Guides featuring Project Hail Mary

Ranked best-of lists and editorial guides where this book's tracked mentions place it.

Project Hail Mary — frequently asked

Is Project Hail Mary better as an audiobook or in print?+

Reddit's displayed preference leans audiobook, hard. r/suggestmeabook has three separate top-upvoted comments pushing the audio edition specifically, including one calling it "a must listen" (↑375) and another crediting the narrator with suiting Weir's conversational writing style (↑415). No comparably upvoted comment argues for print instead.

Is Project Hail Mary a good book to read during a reading slump?+

Yes, according to the specific framing used in r/suggestmeabook's top comment (↑552), which calls it "fun, easy, and sucks you in" and "a great restart into pleasure reading." That's a targeted recommendation for slump recovery, not a general claim about literary merit.

How does r/Fantasy rate Project Hail Mary, a science fiction book?+

Positively, per its top mention here (↑575): "such a fun ride," four words, no elaboration. r/Fantasy logged 713 mentions of it total with scored sentiment at Positive, suggesting the crossover appeal reaches beyond genre lines even if this excerpt doesn't explain why.

What do r/printSF readers think of Project Hail Mary specifically?+

Harder to say from this sample. r/printSF logged 1850 mentions, the second-highest count of any subreddit here, but none of its excerpts made the scored top-quote cut, so its specific verdict isn't represented in what's displayed even though the volume suggests plenty of discussion is happening there.