|This article pertains to Xenogears: the sub-database of Xenosaga Wiki.|
Perfect Works is a book covering the storyline of Xenogears and is also linked to the storylines of the Xenosaga series. It is presumed that, had the two remained in the same canon, that the book describes how they were meant to be linked.
In addition, Perfect Works describes an enormous backstory of Xenogears, including canonical character details that never made it to the game's script.
Perfect Works has been fan-translated to English.