Plot: Megami Tensei Gaiden: Last Bible is a role-playing video game series developed by Multimedia Intelligence Transfer, Sega, and Menue, and published by Atlus and Sega for multiple platforms. Wikipedia
Plot: Shin Megami Tensei: Nine is a Japanese role-playing video game developed by Atlus and NexTech for the Xbox, and published by Atlus on December 5, 2002. Wikipedia
Plot: Kyūyaku Megami Tensei is a remake of both Megami Tensei and Megami Tensei II for Super Famicom. It was released only in Japan in 1995 after Shin Megami Tensei if... and on the heels of Majin Tensei II: Spiral Nemesis.