Completing the game once will unlock a New Game + mode and a hard difficulty level. Choose hard mode and you can get new items. New Game + carries over your play time and items. This mode also has new free scenario events to find.
Free scenarios and choices made during Scenario Synchro System events affect the game’s ending. While Final Fantasy Legend III only had one conclusion, Famitsu reports SaGa 3 Ruler of Space-Time: Shadow or Light has multiple endings.