From Wikipedia
Nival Interactive is a Russian video game developer, with its main development studio based in Moscow. Part of Nival Group.
Nival was founded in 1996 in Moscow by Sergey Orlovskiy. It primarily focused on strategy games (frequently with role-playing elements). Its best-known products include Etherlords, Blitzkrieg, and Silent Storm. The company has recently released the fifth game in the Heroes of Might and Magic series, a franchise owned by Ubisoft.
Nival is the developer of two popular game engines, the Silent Storm Engine and the Enigma Engine, that were reused in several third-party titles.
In early 2005, the company was bought by Ener1 Group, a Florida-based holdings company, for around US$10 million. Ener1 has stated that it will "integrate Nival's artists, designers, and programmers with its US-based video gaming interests". On November 30, 2007, Sergey Orlovskiy regained full control of Nival Interactive.