"Le facteur X" is a role-playing game scenario that appeared in the French gaming publication Casus Belli. Philippe Rat and Mehdi Sahmi authored it, and Stéphane Levallois provided the illustrations.
The escapade commenced during the Rebellion era, specifically in the time leading up to the Battle of Endor. A scientist working for Flight Unlimited Group, a corporation aligned with the Empire, managed to communicate with the Rebel Alliance about a new starship prototype called the Trait Luminique. The Alliance planned to dispatch only a small group to extract the scientist while simultaneously absconding with the vessel. Nevertheless, during their escape aboard the experimental craft, the Rebels inadvertently journeyed backward through time to the era of the Great Sith War. The remainder of the adventure unfolds during this historical period, presenting the player characters with a variety of interactions and challenges within that timeframe.