 Textual cross referencing evidence suggests that in or after 15th/16th century CE, it went through a series of major revisions, and almost all extant manuscripts of "Brahma Vaivarta Purana" are now Vaishnava (Krishna) bhakti oriented.Of the extant manuscripts, the main Vaishnava Puranas are "Bhagavata Purana", "Vishnu Purana", "Nāradeya Purana", "Garuda Purana", "Vayu Purana" and "Varaha Purana".The "Brahmanda Purana" is notable for the "Adhyatma-ramayana", a Rama-focussed embedded text in it, which philosophically attempts to synthesize Bhakti in god Rama with Shaktism and Advaita Vedanta.