Warning: Spoilers abound. If you haven’t read The Book of D’ni, I suggest you do so before proceeding. You can buy all three novels here.
Myst: The Book of D’ni is not a particularly successful book. It doesn’t really have any characters, its plot is disjointed, and its events have little to no bearing on the rest of the series. I’ve slotted it into the fourth place here because its events take place between Riven and Exile, but in all honesty it could have gone anywhere; in fact, its presaging of the themes of Uru might actually make it more relevant there. These are the challenges when working with a book as disorganized as this one. Like Riven, The Book of D’ni is highly ambitious, but unlike Riven, it falls very short of its goals.