YU-NO: A Girl Who Chants Love at the Bound of this World
Alternative Titles: Kono yo no hate de koi o utau Shoujo YU-NO, この世の果てで恋を唄う少女YU-NO
The game's protagonist travels between various parallel worlds in order to solve the mystery of his parents' disappearance. Although parallel worlds are not an unfamiliar concept in science fiction, the game uses concepts from physics, mathematics, philosophy, history and religion to construct a unique fictional universe. In particular, the "A.D.M....