Emperor of the Fading Suns
Trivia
Interface
Emperor of the Fading Suns was developed by the same people who made Merchant Prince and Machiavelli the Prince, which explains why it has the exact same interface as these games.
Patches
After the release, the developers released two patches based on the players' suggestions. There also exist three different fan-made patches called Nova, Hyperion and Reality. Their sites can be found in the related links section.
References
The setting of Holistic Design's pen-and-paper role-playing game Fading Suns, upon which Emperor of the Fading Suns is based, shares many similarities with the Dune universe by Frank Herbert. This includes the game's general premise of a feudal space Empire comprised of a variety of noble houses, trading guilds and religious sects, but there are also numerous direct references, like the Prana-Bindu technology, Doppleganger units (shape-shifters similar to Face Dancers in Dune) and the Psychosonic Manipulation special ability, which can be compared to the Voice used by the Bene Gesserit in Frank Herbert's books.
Technology chart
The game came with a technology tree chart common to Civ./4X games.
Information also contributed by PCGamer77 and Todd Calvin.