Prologue is a canonical part of The Orc Riddle. It aims to show the new location, which will be released in the final project, and present the accurate story. It also seeks to clarify some of the stories and topics that will be crucial in the full version of the modification.
Official english version of Gothic 2 The Orcs' Riddle Prologue.
Gothic 2 Zagadka Orków - Instrukcja instalacji Gothic 2 The Orcs Riddle - Installation Guide