Fate of Io's story is the underlying narrative that provides direction and contour, tying together all other Project material in its context. Taken together, the following sections flesh out the occurrences of the game as it is experienced by the player:

Plot
This detailed exposition, consisting of four parts, outlines the chronology of events in the story.

Characters
The dramatis personae; get to know each of the principal actors in the story. They are categorized by player and non-player characters (those the player does or does not control, respectively).

Setting
Explore the world of Fate of Io in depth. This includes sections focusing on geographical locations, science and technology, and the principle races of the world.

Gameplay
Details on the actual gaming activity that the story offers to the player. This is portioned into two sections--puzzles and battles--with most of our focus on the former.