Barbarian Invasion, the expansion of Rome: Total War developed by Creative Assembly, has shipped to stores, SEGA announced (thanks: Blues). Spanning the years 364AD to 476AD, the expansion offers the chance to play as one of the Barbarian factions (including the Vandals, Saxons and Huns) and take revenge against the Roman Empire, or as the Western and Eastern Roman empires attempting to drive back the Barbarians. The demo can be found here.