Having read this right after the other two novels, I think Project Hail Mary is peak Weir.

It keeps the Sci focus from The Martian, while expanding on a lot the Fi part. Like in the first book, I really enjoyed the thought process of problem solving that the protagonist goes through repeatedly.

There are some phenomenal transitions to memory flashbacks in the early chapters where I just had to stop and appreciate them for a moment. The interactions between Rocky and Grace were great, though sometimes felt a bit too smooth considering the vastly different cultures/languages/etc. Rocky being highly adept at math and having a photographic memory felt a bit too lucky. On the other hand, it probably yields a much more interesting story this way.

I particularly enjoyed the character of Stratt. She reminded me of the Wallfacers from The Dark Forest, except… successful. The things she says regularly came across as insane but in the end all align with her stated goals. She is the closest thing to a “villain” this story has and I like well motivated antagonists.

Now, you read, I watch.