The collection consists of two novels by the Soviet satirist and science fiction writer M. Ya. Kozyrev: “City of Enthusiasts” (co-authored with I. L. Kremlev-Sven) and “Underground Waters”, which have not been republished since the 20s-30s. The text of the book was translated from the original language using an artificial intelligence program. For the most part, the translation of the text is of very high quality, but in some cases, due to the imperfection of the technology, there may be incorrect phrase translations in the text, as well as single words and expressions may not be translated.