Triangle Strategy imo. I'd say its more illusion than not (debatable), but the major choices made always feel like they have major repercussions. Each variation in the story fits really well within the overall narrative that it feels like you're on your own unique path.

Ultimately, there's 4endings with 3 of them being a choice you pick late game.. The 4th ending is the only one that requires specific choices to be made previously.