grancrest
A Japanese fantasy tabletop RPG.
It is set in the world of Atratan, a land of magic, warring nations, and fantastical creatures such as unicorns and dragons. There is also Chaos, "an inexplicable energy which can be thought of possibility. These possibilities become manifest in the real world through either natural or artificial means (called a "Chaos Convergence"). When Chaos converges, it causes the collapse of the order that had been operating up until that point."
The setting was designed by Mizuno Ryo (水野良), the creator of Record of Lodoss War, Legend of Crystania, Rune Soldier Louie, Sword World, and more.
Light Novels
There are several "GranCrest Replay" light novel series.