The Megami Tensei (女神転生 Goddess Reincarnated) series is a franchise of Japanese role-playing video games, developed and published by Atlus. The first game in the series, Digital Devil Story: Megami Tensei, released for the Famicom in 1987, is based on a series of novels written by Aya Nishitani entitled Digital Devil Story. The first game to be published in North America was Revelations: Persona for the original PlayStation in 1996, while the first to be published in Europe was Shin Megami Tensei: Nocturne, renamed Shin Megami Tensei: Lucifer's Call. The series has several recurring themes, including demon-summoning, Japanese folklore, and the occult. Despite its thematic roots in Japanese culture and mythology, the Megami Tensei series has found a cult following internationally.