Gloria Online: The Old New World
He wrote a book in the genre LITRPG.
In an alternative future, when mankind has ceased to digitize to save the earth from overpopulation, in one of the virtual worlds - Gloria online, comes out a patch, which causes all players to become dead. The events of the book develop after another two decades, when Gloria was completely conquered by players, conquering all cities and leaving the NPS in a state of forgetting. One of the first cities that previously met players, Ardan, loses an economic war to his neighbor Billdbraun, whose rulers have long been building plans for the throne of the entire Empire. At this time, a new player comes to the world with a clear goal, but loses memory due to the digitization process. Now he is looking for a way to recover his memory, because it is now the rumors about the soon release of a new patch.
In an alternative future, when mankind has ceased to digitize to save the earth from overpopulation, in one of the virtual worlds - Gloria online, comes out a patch, which causes all players to become dead. The events of the book develop after another two decades, when Gloria was completely conquered by players, conquering all cities and leaving the NPS in a state of forgetting. One of the first cities that previously met players, Ardan, loses an economic war to his neighbor Billdbraun, whose rulers have long been building plans for the throne of the entire Empire. At this time, a new player comes to the world with a clear goal, but loses memory due to the digitization process. Now he is looking for a way to recover his memory, because it is now the rumors about the soon release of a new patch.
Zaporizhzhia 
Available for hire