RTW-BI mod starting in 410 CE, and deals with the collapse of the roman empire.
An independent sub mod for Invasio Barbarorum (uses resources from Invasio Barbarorum but requires a separate install). currently features three campaigns: 432 AD, 463 AD, and a Justinian campaign.
Based on the exploits of the Emperor Julian. The main campaign sees him in Constantinople preparing to invade the Sassanid Empire, the second campaign sees him as Caesar in Gaul charged with the responsibility of securing Gaul from the Germans.