I think an Arabia: Total War might be good also. A map going from the Levant to India, as far north as Crimea and south as Ethiopia, so all of Arabia could be in. Time frame could be any time. It could be Medieval to involve the Crusades, it could be Roman time to simulate the Selucid Empire, Ptomely, Pontus, with a possible scripted Roman invasion after so many turns, it could even be World War I era, a la Lawrence of Arabia, where the Arabs fight for their freedom against the Ottoman Empire. Or; make the main game with one era, and the others can be covered with expansion packs.