Several songs from David Bowie's album "Hours" are included in this game.
Omikron: The Nomad Soul was originally supposed to get a PlayStation release. However, Eidos didn't believe that the PlayStation version would even sell and they urged Quantic Dream to move it to the Dreamcast as Eidos thought the Dreamcast would be a worthy successor to the current generation console then. However, things didn't go the way as Eidos expected as the Dreamcast wasn't a hit. David Cage, the writer and director for Omikron, claimed that the biggest regret was to not release it on the PlayStation.
The game features David Bowie as Boz, the Virtual Being. For the role of Boz, David Bowie contributed his voice and allowed a graphic fantasy rendition to be made of himself for the role. In addition, his wife, supermodel Iman, acts as the model for one of the characters (Iman 631) in the game that players can take control of as part of the "virtual reincarnation" process. In memory of his passing, Square Enix offered a free download of this game from 1/15/2016 to 1/22/2015.
The German cover of the game (both for the Windows and Dreamcast editions) shows a wide-open eye with a barcode over iris and pupil. That EAN 9780140072389 actually refers to the Spanish language edition of a crime/espionage story named LaBrava.