The game was created to be true to a historical background. There are little known ruins in Heliopolis, near Cairo, but the architecture was based on the geographical environment and contemporary structures in other regions.
The same goes for the scenario. All characters are fictive, but their duties, activities and weaknesses are based on information from authentic documents. Even at that time, there was such as thing as misappropriation of funds.
The sickness in the game is not based on historical grounds and the cure, gingko was only to be found in China at that time. It's unlikely that there were economical connections at that time, which could have introduced the cure, but there might have been some at the borders, closest to the two regions.
The game was developed in close cooperation with Isabelle Franco (doctor in the Egyptology, professor at the Cheops institute and the Ecole du Louvre) and Jean-Claude Golvin (doctor in the archeology and director of research at the CNRS (Centre National de la Recherche Scientifique)