Suikoden Universe, without a doubt.
It has several advantages over other fantasy universes: Basically an early-renaissance period with a variety of art, including: Literature, Plays, and Music. Plus advanced medicine and only a small amount of magic. It has a choice of kingdoms, agrarian cultures, mercantile nations, republican democracies, and near-anarchist lands. It tends to value education and intellect as much as warfare, and conflicts -while existent- tend to be more minor and restricted to combatants.
Magic does exist, but is mostly only wielded by Runes, worn by humans. Essentially making magic powerful, but tremendously limited in its effect. The only major problem with this is the controversial autonomy of the Runes, meaning that no one really has any idea if they are sentient themselves, or what on earth their purpose or desires could be if they are sentient.
Basically what makes Suikoden stand out is that it actually feels like a real world. It has it own nations, and these nations have relations in trade and military policy. There are various cultures with various ways of fashion, art philosophy, and so on. Nations that are sometimes enemies can join forces and become allies, and vice versa.