Project Hail Mary (Hardcover, 2021, Ballantine Books) 4 stars

Ryland Grace is the sole survivor on a desperate, last-chance mission--and if he fails, humanity …

Review of 'Project Hail Mary' on 'Goodreads'

4 stars

The plot twist around Ryland's amnesia is great!
"Space amoeba" story done right.
Relationship between Ryland and Rocky is endearing.
Audiobook elevates the whole experience.

Protagonist with amnesia trope has been done before.
Rocky has interesting alien physiology & boring human psychology.
* Earthbound story-line and characters seem childish & oversimplified compared to science in space sequences.