The FB2 (FictionBook) format is a favorite among Russian-speaking readers because:

Files are lightweight and often shared in .fb2.zip archives to save data. Where to Find It

It stores cover art, author bios, and descriptions within the file itself.

While these are popular community-driven libraries, availability can vary due to licensing restrictions. Reading Recommendations

If you enjoyed the suspense of Golovokruzhenie , you might also like:

A subscription-based service that allows you to read thousands of titles, including modern thrillers, via their mobile app.

by Gillian Flynn – For those who love unreliable narrators.

It automatically adjusts text to fit any screen size, whether you are using a smartphone or a dedicated e-reader.