Help With Shin Megami Tensei Games

Some Old Shin Megami Tensei Games Never played on PSN like



Shin Megami Tensei: Nocturne



Shin Megami Tensei: Devil Summoner: Raidou Kuzunoha vs. The Soulless Army.



Shin Megami Tensei: Digital Devil Saga



Shin Megami Tensei: Digital Devil Saga 2.



Shin Megami Tensei: Devil Summoner 2: Raidou Kuzunoha vs. King Abaddon





The only Shin Megami Tensei games I played are Persona 4 and 3 what the Gameplay Elements Similar in this games With the Persona Series