I'm going by the designated Goodreads values for the ratings, so this year only 13 books so far received a 5-star, 'it was amazing', rating from me.
Listing them all:
[b:Kolyma Tales|109812|Kolyma Tales|Varlam Shalamov|https://images.gr-assets.com/books/1465777117s/109812.jpg|105834] by Varlam Shalamov reminds us of how evil we humans can be, but does it so brilliantly that I think no one could fail to be touched and therefore depressed, at least for a time. It's the best book of the year for me, but be warned: it hurts.
[b:Flowers for Algernon|18373|Flowers for Algernon|Daniel Keyes|https://images.gr-assets.com/books/1367141311s/18373.jpg|3337594], [b:The Yellow Wall-Paper|286957|The Yellow Wall-Paper|Charlotte Perkins Gilman|https://images.gr-assets.com/books/1351778524s/286957.jpg|17352354], and [b:The Gambler|12857|The Gambler|Fyodor Dostoyevsky|https://images.gr-assets.com/books/1348607722s/12857.jpg|4356972] were three works impressively chronicling the dark side of the mind. I won't say more for fear of spoilers, but two of the authors actually went through what they described, or very nearly so.
[b:Melmoth the Wanderer|207313|Melmoth the Wanderer|Charles Robert Maturin|https://images.gr-assets.com/books/1373051517s/207313.jpg|200656] is a great gothic novel which is very readable in spite of mammoth size.
[b:Bleak House|31242|Bleak House|Charles Dickens|https://images.gr-assets.com/books/1280113147s/31242.jpg|2960365] became one of the best Dickenses for me, though that's not easy.
Two new-to-me authors of this year scored great hits:
[b:Buddha's Little Finger|76022|Buddha's Little Finger|Victor Pelevin|https://images.gr-assets.com/books/1436685737s/76022.jpg|94755] by Victor Pelevin, an indescribable mixture of everything at once: philosophy, postmodernism, social criticism, a tiniest dash of love interest... and easy to read, which I never expected;
[b:The Name of the Rose|119073|The Name of the Rose|Umberto Eco|https://images.gr-assets.com/books/1415375471s/119073.jpg|3138328] by Umberto Eco - it's actually possible to describe it in the very words I just used for Pelevin! But it's different and also extremely good.
An impressive picture of almost a century in Abkhazian history, [b:Sandro of Chegem|357137|Sandro of Chegem|Fazil Iskander|https://images.gr-assets.com/books/1215521196s/357137.jpg|347300] is impossible to categorize.
[b:The End of the Affair|29641|The End of the Affair|Graham Greene|https://images.gr-assets.com/books/1328010344s/29641.jpg|267229]. I love Graham Greene and am always very much in tune with him, which isn't hurt in the slightest by the fact that he and his books are deeply religious and I'm not.
And on a lighter side:
[b:The Secret Garden|2998|The Secret Garden|Frances Hodgson Burnett|https://images.gr-assets.com/books/1327873635s/2998.jpg|3186437] is one of the best children's books I've read for a long time;
[b:The Mysterious Mr. Quin|16356|The Mysterious Mr. Quin (Harley Quin, #1)|Agatha Christie|https://images.gr-assets.com/books/1476892657s/16356.jpg|18056] stood out when I reread several Agatha Christie books, both by its slighly paranormal slant and by the short story format, which I find suits me better in Christie, since she has no space to go into unbelievable plot convolutions.
The last book is non-fiction: [b:Ваш непонятный ребенок|18479523|Ваш непонятный ребенок|Екатерина Мурашова|https://images.gr-assets.com/books/1378832944s/18479523.jpg|26152563], a parenting book from a Russian child psychologist, very useful and even entertaining at times.