Digital Devil Story: Megami Tensei refers to two distinct role-playing video games based on the Digital Devil Story trilogy of science fiction novels by Japanese author Aya Nishitani. One version was developed by Atlus and published by Namco in 1987 for the Famicom—Atlus would go on to create further games in the Megami Tensei franchise. A separate version for personal computers was developed and published by Telenet Japan with assistance from Atlus during the same year.