Simplistic Reviews’s review published on Letterboxd :
There are a lot of thoughts going through my mind after finishing this one up.
On the surface this is another take on what happens if aliens landed on Earth and what would they do. However, come the end of "Annihilation" there are a lot more questions to be answered. A lot of blink and you miss it subtlety as well.
I didn't read the 2014 "Southern Reach" series, but with so much to be explained, it might not be a bad idea.
Alex Garland, in just two films, has carved out a niche in how to manipulate and toy with an audiences' sense of reality and create an palpable sense of dread and anxiety. Much like what Alfred Hitchcock was able to do for the suspense genre, Garland is making a convincing case as one of the best directors working in the sci-fi genre today.
Gina Rodriguez shines hard in this one, by the way. Tessa Thompson too.