There are other civilizations playable via the campaign, which include The Knights of St. John, John Black's Mercenaries, and the United States of America, which are played as the Spanish, German and British civilizations, respectively, with slight modifications.
Terdapat peradaban lain yang dapat dimainkan lewat campaign, seperti Ksatria dari St. John, Pasukan Bayaran John Black, dan Amerika Serikat, yang dimainkan sebagai, berturut-turut, peradaban Spanyol, Jerman dan Britania, dengan beberapa modifikasi.