Great Invasions (The Dark Ages 350-1066 AD) is a real-time strategy computer game released 6 October 2006. The game portrays the Dark Ages, starting in 350 with the death of the Roman Emperor Constans and ending in 1066. The player can control up to ten nations simultaneously, and is given control of diplomacy, war, finances, administration, religion, building structures and training and managing armies and fleets.