Mainline SMT games are a rather different beast. They don’t have any of the social sim elements of the Persona games, and tend to be old-school first-person dungeon crawlers, with an emphasis on exploration, the acquisition and fusing of demons, and developing a balanced team of demons to face off against the enemies and bosses you encounter in the dungeons. They also frequently feature a good/neutral/evil alignments that offers different endings, including different final bosses, depending on which alignment you wind up with as a result of the choices you make throughout the game. They’re a lot of fun if you’re into those sort of things.