The Grand Compendium
Devil Summoner Series Spreadsheets
One of Megami Tensei's first major spin-off series alongside Persona. These games are notable for the Loyalty system, which affects how well your demons cooperate with you. The first two Devil Summoner games have fairly traditional Megami Tensei gameplay, but the Raidou Kuzunoha games make use of a real-time combat system. I have beaten the original Devil Summoner and Soul Hackers, but have not played the Raidou games.