Shin Megami Tensei with SMT Nocture - the best game in the series as considered by many - features a true ending that's about Lucifer grooming the player to become his weapon to perform the Great Will. The funny thing is, their spinoff persona is about friendship is magic - like in P5 features an ending where they fight the demiurge. Innocent gamers usually pick up spinoffs as their entry to this series, then get into the main games to take in all these full fledged masonic philosophy.