Like most other things in 2021, my reading output sucked.  So did my blog posting AND my originality in entire posts. But, I did read some excellent books as my goodreads Year in Books shows.  My favorite would have to be Void Star by Zachary Mason.  This is one of those books that I read because of its genre, age, rating, and the fact that a recommendation algorithm said I would like it.  This time the algorithm got it right and this is one I will probably read, again.  The huge number of Attack on Titan books I read were also excellent, but it's hard to pick a single one to call out.  Finally, they began transforming my favorite novel Dune into a graphic Novel and the results are excellent.