It's one of my favorite time travel plot devices, since it frames the whole "video games allow you to save and load as much as you want" mechanic in a way that is entertaining and engaging. It's also been done quite a few times in video games, with the ones that I recall being GrimGrimoire and Radiant Historia.
The concept of "time rewinds until you get it right" is a fairly common trope - TVTropes calls this the Groundhog Day Loop, after the movie Groundhog Day. You then play through another set of levels, making different choices, and hoping that this time you've figured it all out. The book then flips back to the first page, but Reynardo is now (hopefully) slightly smarter and can more clearly understand the effects of his choices. After 5 or so levels, the story is over and you get one of 24 possible endings. Then the next level plays out based on your decision.
In-game, this means that between levels you're typically given a choice on how to proceed. With it, he can see the consequences of his choices.
Luckily, a mysterious tome has managed to find its way into Reynardo's inventory. There's a lot going on, and only by treading carefully can he navigate the veritable minefield of the emperor's plans and the ancient artifacts that the emperor is searching for, not to mention the relationships he has with his former and current friends. Unfortunately, unraveling the emperor's plans in Stories: The Path of Destinies isn't something that Reynardo can just bumble his way through. The emperor has gone mad and decided to try for immortality by waking the "Old Gods," which is an idea that really shouldn't sound like a good idea to anybody. He initially doesn't really want anything to do with the looming war or the rebellion, but events transpire that convince him to get involved. Reynardo is a bit of an anti-hero, as his "sky pirate" title suggests. Armed with the ability to see the effects of his choices before he makes them, Reynardo sets off to find a way to save the world. The notorious sky pirate Reynardo finds himself in possession of an enchanted book that allows him to see what disaster war is about to bring his world. Stories: The Path of Destinies is an action RPG with a heavily branching storyline, released last month by Spearhead Games. Stories: The Path of Destinies Review: Stop me if You've Heard This One.