Rome: Total War – Barbarian Invasion is the expansion to the best-selling Rome: Total War. The original game covered the rise of the Roman Empire and the struggle to be the Emperor of the Roman World. In the tradition of earlier Total War expansions, Barbarian Invasion (BI) introduces a new campaign in a time when an almost-unstoppable threat has arisen. The expansion moves the action on 350 years to a time when the Roman Empire is in deep trouble, beset by enemies inside and out, and possibly even dying. The year is 363 AD, and the Roman Empire has split into two parts ruled from the cities of Rome (for the Western Empire) and Constantinople (for the Eastern Empire). If this weren’t bad enough, barbarian tribes have been massing on the Imperial frontiers in Europe for many years. In the East the Empire faces a renewed threat from the Persian Empire, under new vigorous rulers, the Sassanids.