Several different cults or societies characterized in part by elaborate initiation rituals and secret rites. Though attested in Greece before 600 B.C., the mystery religions flourished during the Hellenistic and Roman periods (after 333 B.C.) before dying out before A.D. 500. In particular the intermingling of religious concepts made possible by Alexander the Great’s far-flung conquests accelerated the spread of some cults and facilitated the development of