I haven't played too many JRPGs but what I particularly loved about the Golden Sun series (well, 1 and 2) compared to other JRPGs I've played like Persona 3/4, FF7/10 was the sheer scope of game in terms of exploring continents, visiting and finding out about different cultures and their languages. The actual feeling of having travelled long distances.
Any other great JRPGs scratch this particular itch?
Any other great JRPGs scratch this particular itch?