Due to the lack of a complete database of the world's states and their rulers in the historical literature, Runivers, together with historian Vadim Ehrlichman, prepared the project "Countries and Rulers of the World".
A unique table with a list of 10,567 states and state entities has been prepared. It includes data on their territories, capitals, time of existence, circumstances of their emergence and disappearance, forms of government, data on the main ethnic group and religions. For the first time, such a database was created not only in Russian, but also in world historiography.