Victoria – An Empire Under the Sun" was hailed by some critics as the ultimate World Domination and Empire-Building simulation. The new expansion Revolutions is in a similar vein while offering several new and exciting features. Among other things, players can continue their Victoria: Revolutions games in HoI2: Doomsday, thus extending the game play for both games. Victoria: Revolutions requires the original game "Victoria – An Empire Under the Sun.