Invasions simulates 300 years of European history, from the late days of the Roman Empire to the start of the Muslim expansion. During this period, known as the Dark Ages, many people invaded the continent, each hoping to colonize it or conquer a realm there, replacing other people established before them. But the new conquerors would never maintain their new powers for long, as other invaders also invaded them. Invasion marks the return of Philip Thibaut, the creator of the critically acclaimed Europa Universalis, that he also adapted for PC, and of The Great War '14 -'18. Philippe is also the creator and designer of American Civil War games, Pax Romana, Rise of Prussia or Birth of America.