'Jihad! is a game type simulation of the first century of Islamic expansion after the death of Mohamed, the Prophet and founder of the Islamic religion. During this period a holy war of conquest and the religious conversion of non-Arab peoples were the mainsprings of Islam and the Arabs progressed from a religious force to a secular great power. Jihad! covers these events on a grand strategic scale with each turn representing five years and military units representing entire armies of various types.' - BoardGameGeek