For books outside the Anglosphere, but translated into English, I can remember three:

- "Apocalypse Z", by Manel Loureiro: typical zombie novel, but in Spain; the moral decay is there, but a different society means different ways to go down.The second part is readable, but I found the third too packed with tropes (also, the action takes place in the USA).

- "Typescript of the Second Origin", sci-fi book in Catalan. I read it a long time ago, and was not thrilled, but a lot of people says it´s good.

- "Blindness", by Nobel prize José Saramago. He doesn´t name the country it is set in, but hints it is Portugal. Really bleak, not for the faint of heart. Also, somewhat strange way of writing, deliberately obscuring who is saying what, but it is good reading.